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#1
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Generating green light using a 510 nm AC current
Hi:
Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium |
#2
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Generating green light using a 510 nm AC current
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#3
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Phineas T Puddleduck wrote:
On 10/7/06 22:43, in article , "Radium" wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Calculate the required frequency. Or get a simple converter (bridge rectifier, inductor, handful of green LED's). |
#4
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Generating green light using a 510 nm AC current
On 10 Jul 2006 14:43:51 -0700, "Radium" wrote:
Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium In theory it should work - build an oscillator that works at that frequency and it would give off light. Hertz proved the connection with his experiments with microwaves. The same techniques used to reflect and refract light work with radio waves Now for practical considerations . . . Think about how small 510 nanometers really is. The resonant cavity in a magnetron, as a way to generate light, would have to be on the order of 510 nm. Not possible with present technology and not likely to be in the near future. Someday, perhaps a shortcut could be found - will it replace other light sources? ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"default" wrote in message
... Now for practical considerations . . . Think about how small 510 nanometers really is. The resonant cavity in a magnetron, as a way to generate light, would have to be on the order of 510 nm. Meh, only about 4,000 silicon (or copper) atoms. You could even use a stock atomic force scanning, tunneling microscope probe as an emitter. Construct a couple million of these moderately large molecules, hook them up to some carbon nanotubes and you've got a pretty nice LED I'm guessing. Ooh, and it could even be tweaked into a phased array I bet...the possibilities are kickass... Tim s -- Deep Fryer: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms |
#6
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium http://www.google.com/search?q=terah...start =0&sa=N Sue... |
#7
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Radium wrote:
Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium See: http://www.google.com/search?q=c%2F510nm |
#8
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"Radium" wrote in message oups.com... Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. go the other way, use a large 1 Hz generator to generate a Giant Fat 1Hz Photon |
#9
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"Radium" wrote in message oups.com... Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? Light is electromagnetic radiation, right? An "AC electric current that has frequency high enough to have a wavelength of 510 nm" would BE green light. You need to think about how high-frequency AC (meaning radio frequencies and higher) actually gets piped around. Bob M. |
#10
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Bob Myers wrote: "Radium" wrote in message oups.com... Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? Light is electromagnetic radiation, right? Light is electromagnetic radiation, yes. However, light is not electricity. Electricity and electromagnetism are two totally different things. An "AC electric current that has frequency high enough to have a wavelength of 510 nm" would BE green light. No. The human eye cannot see electric current. It can see electromagnetic radiation at the "visible light" range of frequencies. However, electric current -- at any frequency -- is always invisible to the human eye. Think of a sound analogy. We can hear mechanical vibrations between 20-20K hz approx. However, we cannot hear electric current at any frequency, can we. Just like that, we can see electromagnetic radiation in the "visibile light" frequencies but we cannot see their electrical equivalent. Electricity by itself is totally invisible and inaudible. You need to think about how high-frequency AC (meaning radio frequencies and higher) actually gets piped around. Bob M. |
#11
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
In sci.physics Radium wrote:
Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium Sure, you just need really small tools to put the antenna together... -- Jim Pennino Remove .spam.sux to reply. |
#12
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
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#13
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Norm Grimpo wrote: "Radium" wrote in message oups.com... Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. go the other way, use a large 1 Hz generator to generate a Giant Fat 1Hz Photon I just messed my pants from laughing too hard. Thank you. Markus. |
#14
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Phineas T Puddleduck wrote: On 11/7/06 03:04, in article , "Radium" wrote: crap Some helpful advice if you are thinking of going into physics. Don't. I was pointing out to Bob Myers that we cannot see electric current even if it oscillates at a frequency in the "visible light" range. What is so incorrect about that? If an electric current oscillates at a frequency in the "visible light" spectrum, then we can see photons emitted as a result of the oscillating electric current but we can't see the electric current itself. Am I right? -- Relf's Law? -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Bull**** repeated to the limit of infinity asymptotically approaches the odour of roses." Corollary -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³It approaches the asymptote faster, the more pseduos¹ you throw in your formulas.² -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³Gravity is one of the four fundamental interactions. The classical theory of gravity - Einstein's general relativity - is the subject of this book.² : Hartle/ Gravity pg 1 -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Jaffa cakes. Sweet delicious orange jaffa goodness, and an abject lesson why parroting information from the web will not teach you cosmology. -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
#15
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
In article . com,
Radium wrote: Phineas T Puddleduck wrote: On 11/7/06 03:04, in article , "Radium" wrote: crap Some helpful advice if you are thinking of going into physics. Don't. I was pointing out to Bob Myers that we cannot see electric current even if it oscillates at a frequency in the "visible light" range. What is so incorrect about that? If an electric current oscillates at a frequency in the "visible light" spectrum, then we can see photons emitted as a result of the oscillating electric current but we can't see the electric current itself. Am I right? Lets just say that your previous musings on science have been less than inspiring. -- Relf's Law? -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Bull**** repeated to the limit of infinity asymptotically approaches the odour of roses." Corollary -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³It approaches the asymptote faster, the more pseduos¹ you throw in your formulas.² -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³Gravity is one of the four fundamental interactions. The classical theory of gravity - Einstein's general relativity - is the subject of this book.² : Hartle/ Gravity pg 1 -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Jaffa cakes. Sweet delicious orange jaffa goodness, and an abject lesson why parroting information from the web will not teach you cosmology. -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
#16
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
In sci.physics Radium wrote:
Phineas T Puddleduck wrote: On 11/7/06 03:04, in article , "Radium" wrote: crap Some helpful advice if you are thinking of going into physics. Don't. I was pointing out to Bob Myers that we cannot see electric current even if it oscillates at a frequency in the "visible light" range. What is so incorrect about that? If an electric current oscillates at a frequency in the "visible light" spectrum, then we can see photons emitted as a result of the oscillating electric current but we can't see the electric current itself. Am I right? Sort of, but not due to any understanding on your part. Anything carrying current more than a small fraction of a wavelength long will radiate. It is nearly impossible to carry current at 510 nm and not radiate. -- Jim Pennino Remove .spam.sux to reply. |
#17
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Generating green light using a 510 nm AC current
In article . com, "Radium" writes:
Phineas T Puddleduck wrote: On 11/7/06 03:04, in article , "Radium" wrote: crap Some helpful advice if you are thinking of going into physics. Don't. I was pointing out to Bob Myers that we cannot see electric current even if it oscillates at a frequency in the "visible light" range. What is so incorrect about that? If an electric current oscillates at a frequency in the "visible light" spectrum, then we can see photons emitted as a result of the oscillating electric current but we can't see the electric current itself. Am I right? Well, about as right as saying that you never see a person, a tree, a car, a star, etc. etc., you just see the photons emitted or reflected by those things. In the extremely restricted sense which you attribute to the word "see", you can hardly see anything at all. Mati Meron | "When you argue with a fool, | chances are he is doing just the same" |
#18
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On 10 Jul 2006 14:43:51 -0700, "Radium"
wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium Try: http://www.nsls.bnl.gov/about/history/ for a description of visible synchrotron radiation. Regards, Bill Ward |
#19
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On 2006-07-10, Radium wrote:
Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? In theory Has this ever been done before? You'd need a frequency of around 580THz. Bye. Jasen |
#20
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On a sunny day (10 Jul 2006 14:43:51 -0700) it happened "Radium"
wrote in .com: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Boring twit... 'nm' is a size, so and frequency is expressed in Hz. So does your car go 10 cycles per gallon? So you are talking about a _wavelength_ of 510nm. 1 meter = 300 MHz = 300 000 000 Hz 1 nm = 300 000 000 000 000 000 Hz (nano is a factor 10^-9) = 300 000 Tera Hertz T M K Now maybe you think you can buy a a 300 000 THz xtal... hehe ;-) Anyways you can make 510 nm wavelength with 60 Hz AC: Just use 6V 60Hz and a 510nm LED, and a series resistor. Wow, also works with DC. Without a series resistor it will work for a shorter time, Now for a start try to calculate for a peak current of 20mA and a 1.5V drop in the LED, and LET US KNOW before your next space science idea. Any math ****ups here are intended |
#21
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium 1m = c.sec/299,792,458 This is the new definition of the meter. Far more accurate than scratches on a bar in Paris. This is approached using non linear dielectrics and beat frequencies rather that Terahertz AC directly. Distance can be much more accurately measured using an interferometer than by any other method. Beats can be directly converted into AC but not light directly. In communicaton Terahertz fibers work on the principle of having a number of lasers each with a slightly different frequency. You have just GHz on each laser. |
#22
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Jan Panteltje wrote: On a sunny day (10 Jul 2006 14:43:51 -0700) it happened "Radium" wrote in .com: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Boring twit... 'nm' is a size, so and frequency is expressed in Hz. Yes. What I was trying to say is an "AC current whose frequency is high enough to directly produce electromagnetic radiation of a wavelength of 510 nm". Sorry for the misinformation. So does your car go 10 cycles per gallon? So you are talking about a _wavelength_ of 510nm. 1 meter = 300 MHz = 300 000 000 Hz 1 nm = 300 000 000 000 000 000 Hz (nano is a factor 10^-9) = 300 000 Tera Hertz T M K Now maybe you think you can buy a a 300 000 THz xtal... hehe ;-) Anyways you can make 510 nm wavelength with 60 Hz AC: Just use 6V 60Hz and a 510nm LED, and a series resistor. Wow, also works with DC. Without a series resistor it will work for a shorter time, Now for a start try to calculate for a peak current of 20mA and a 1.5V drop in the LED, and LET US KNOW before your next space science idea. Any math ****ups here are intended |
#23
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Bill Ward wrote: On 10 Jul 2006 14:43:51 -0700, "Radium" wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium Try: http://www.nsls.bnl.gov/about/history/ for a description of visible synchrotron radiation. Regards, Bill Ward Is it practical to make synchrotron lasers? A synchrotron laser use a synchrotron as the source that emits light. The synchrotron is inside the laser. The laser has two mirrors on each end. One is a full-reflective mirror, the other is a partial-silvered mirror that partially reflects and partially lets light out. Light of a certain wavelength is emitted from the synchrotron, this light hits both mirrors thereby reflecting continuously, the coherent light then leaves the partial-silvered mirror. |
#24
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"Radium" wrote in message ups.com... Bob Myers wrote: "Radium" wrote in message oups.com... Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? Light is electromagnetic radiation, right? Light is electromagnetic radiation, yes. However, light is not electricity. Correct - but you conveniently missed the rest of my comments, apparently. Which we You need to think about how high-frequency AC (meaning radio frequencies and higher) actually gets piped around. Again, you DO need to think really hard about how HIGH-FREQUENCY (RF, microwaves, etc.) EM is normally routed around. Is it "electricity," or is it better viewed as a situation involving guided EM waves? Both models have their advantages, but you'll find that as you get higher and higher in frequency, the latter becomes much more useful - certainly by the time you're NEEDING things like coaxial cables and certainly waveguides. If you're making electrons wiggle such that you're talking a 510 nm free-space wavelength, expect to have green light involved... Bob M. |
#25
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"Radium" wrote in message ups.com... I was pointing out to Bob Myers that we cannot see electric current even if it oscillates at a frequency in the "visible light" range. What is so incorrect about that? Simply that you clearly do not understand the relationship between what you're calling "electric current" and "electromagnetic radiation." These two are not the clearly- distinguished things that you seem to think they are, esp. at the very high frequencies. Bob M. |
#26
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Bill Ward wrote: Try: http://www.nsls.bnl.gov/about/history/ for a description of visible synchrotron radiation. My favorite light show: http://zpinch.sandia.gov/ Bill Ward Best, Dan. -- "We need an energy policy that encourages consumption" George W. Bush. "Conservation may be a sign of personal virtue, but it is not a sufficient basis for a sound, comprehensive energy policy." Vice President Dick Cheney |
#27
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On Tue, 11 Jul 2006 17:35:48 GMT, Dan Bloomquist
wrote: snip My favorite light show: http://zpinch.sandia.gov/ Best, Dan. Thanks, Dan. That's a very nice link. I wasn't even aware of the work on fusion with the Z machine. As an aside - I wonder what the image exposure time was. Regards, Bill Ward |
#28
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On 11 Jul 2006 09:51:16 -0700, "Radium"
wrote: Bill Ward wrote: On 10 Jul 2006 14:43:51 -0700, "Radium" wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? Thanks, Radium Try: http://www.nsls.bnl.gov/about/history/ for a description of visible synchrotron radiation. Regards, Bill Ward Is it practical to make synchrotron lasers? A synchrotron laser use a synchrotron as the source that emits light. The synchrotron is inside the laser. The laser has two mirrors on each end. One is a full-reflective mirror, the other is a partial-silvered mirror that partially reflects and partially lets light out. Light of a certain wavelength is emitted from the synchrotron, this light hits both mirrors thereby reflecting continuously, the coherent light then leaves the partial-silvered mirror. First find out what a synchrotron is and why it radiates. Then maybe you can ask a question that makes more sense. Regards, Bill Ward |
#29
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Bill Ward wrote: On Tue, 11 Jul 2006 17:35:48 GMT, Dan Bloomquist wrote: snip My favorite light show: http://zpinch.sandia.gov/ Best, Dan. Thanks, Dan. That's a very nice link. I wasn't even aware of the work on fusion with the Z machine. As an aside - I wonder what the image exposure time was. Hi Bill, My guess is that they open the shutter and pull the trigger. From this: http://www.sandia.gov/media/z290.htm They are dumping 10kwh into the load in just some billionths of a second. That is some short flash for such a large construct. Bill Ward Best, Dan. -- "We need an energy policy that encourages consumption" George W. Bush. "Conservation may be a sign of personal virtue, but it is not a sufficient basis for a sound, comprehensive energy policy." Vice President Dick Cheney |
#30
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Generating green light using a 510 nm AC current
Basically the process used for laser diodes to make light is the same as for
the Magnetron tubes for microwave. Got enough newsgroups in the list? Bet you're on the alt.electronics NG which I don't have. -- Why do penguins walk so far to get to their nesting grounds? |
#31
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
On Tue, 11 Jul 2006 17:30:48 GMT, "Bob Myers"
wrote: "Radium" wrote in message oups.com... Bob Myers wrote: "Radium" wrote in message oups.com... Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? Light is electromagnetic radiation, right? Light is electromagnetic radiation, yes. However, light is not electricity. Correct - but you conveniently missed the rest of my comments, apparently. Which we You need to think about how high-frequency AC (meaning radio frequencies and higher) actually gets piped around. Again, you DO need to think really hard about how HIGH-FREQUENCY (RF, microwaves, etc.) EM is normally routed around. Is it "electricity," or is it better viewed as a situation involving guided EM waves? Both models have their advantages, but you'll find that as you get higher and higher in frequency, the latter becomes much more useful - certainly by the time you're NEEDING things like coaxial cables and certainly waveguides. If you're making electrons wiggle such that you're talking a 510 nm free-space wavelength, expect to have green light involved... Bob M. I've been reading this thread and the above answer made me think of a question. I'm a rank amateur so I hope this question isn't too silly but here goes: When an antenna is used to recieve radio waves is it the same as using a transparent material, fiber optic for example, to recieve visible light? Or even a good anology? Thanks, Eric |
#32
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"Mark Fortune" wrote in message ... Hmm, if light travels at a nice round figure of 300,000,000m/s, a 510nm wavelength has a frequency of 300,000,000 / 0.00000051 = 588,235,294,117,647Hz = 588.24THz (is that right? ive only just woken up so my maths is a little shakey). Now that's a pretty crazy frequency to run any electronics project at if you ask me, and I suspect that unless you were using some exotic superconducting material, you would have a massive problem with inductance and capacitance in your good old copper wires. might work on silicon though I dont know. Well, that's kinda the point - in part, at least. But what I was trying to get across to our "friend" Radium is that the higher you go in frequency, the worse the model of "electricity is the movement of electrons in conductors" looks, and the better the model of "the metal bits are just there to guide the EM" looks - and eventually you get to the point where you're basically seeing everything as a waveguide. (Or another way to look at it - the higher the frequency, the shorter the distance you want to carry "electrical" signals in conductors, and the more you rely on "pipes" to carry the signal long distances.) The point of "you really need to be using a waveguide to carry this any distance at all" happens at a frequency that's still considerably below that form of EM that we call "visible light," but there is really no difference in *kind* between light and a microwave RF signal. Hence the earlier comment that if you somehow COULD be making "electricity" with a wavelength of 510 nm, it WOULD already result in "green light." Bob M. |
#33
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Generating green light using a 510 nm AC current
Bob Myers wrote:
"Radium" wrote in message oups.com... Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? Light is electromagnetic radiation, right? An "AC electric current that has frequency high enough to have a wavelength of 510 nm" would BE green light. You need to think about how high-frequency AC (meaning radio frequencies and higher) actually gets piped around. Bob M. Hmm, if light travels at a nice round figure of 300,000,000m/s, a 510nm wavelength has a frequency of 300,000,000 / 0.00000051 = 588,235,294,117,647Hz = 588.24THz (is that right? ive only just woken up so my maths is a little shakey). Now that's a pretty crazy frequency to run any electronics project at if you ask me, and I suspect that unless you were using some exotic superconducting material, you would have a massive problem with inductance and capacitance in your good old copper wires. might work on silicon though I dont know. |
#34
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Bob Myers wrote: Well, that's kinda the point - in part, at least. But what I was trying to get across to our "friend" Radium is that the higher you go in frequency, the worse the model of "electricity is the movement of electrons in conductors" looks, and the better the model of "the metal bits are just there to guide the EM" looks - and eventually you get to the point where you're basically seeing everything as a waveguide. (Or another way to look at it - the higher the frequency, the shorter the distance you want to carry "electrical" signals in conductors, and the more you rely on "pipes" to carry the signal long distances.) The point of "you really need to be using a waveguide to carry this any distance at all" happens at a frequency that's still considerably below that form of EM that we call "visible light," but there is really no difference in *kind* between light and a microwave RF signal. Hence the earlier comment that if you somehow COULD be making "electricity" with a wavelength of 510 nm, it WOULD already result in "green light." But you don't have a handle on the reality???? -- "We need an energy policy that encourages consumption" George W. Bush. "Conservation may be a sign of personal virtue, but it is not a sufficient basis for a sound, comprehensive energy policy." Vice President Dick Cheney |
#35
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? There have been zillions of replies which all miss the point entirely. It is of no practical use to make green light with high frequency AC current - what you need is a steady green light which is best (steadiest) using smoothed DC. For this a green source of DC electricity is required - viable methods of producing green electricity is currently attracting much attention and research funding throughout the western world. I am sure it will not be long before such green electricity is commonplace. What, I am sure, Radium has cleverly alluded to (and hence started the discussion upon) is the fact that upon the arrival of plentiful green electricity, and hence green light, the world will look a very odd place : in fact it will look green when sunlight is not available. This is (I am sure) Radiums point. Many are involved in the search for truly green electricity but we really also need red and blue counterparts to produce white light and all its variants. NOBODY APPEARS TO BE RESEARCHING INTO RED AND BLUE ELECTRICITY. We must act now before it is too late |
#36
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
RHRRC wrote:
Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? There have been zillions of replies which all miss the point entirely. It is of no practical use to make green light with high frequency AC current - what you need is a steady green light which is best (steadiest) using smoothed DC. For this a green source of DC electricity is required - viable methods of producing green electricity is currently attracting much attention and research funding throughout the western world. I am sure it will not be long before such green electricity is commonplace. What, I am sure, Radium has cleverly alluded to (and hence started the discussion upon) is the fact that upon the arrival of plentiful green electricity, and hence green light, the world will look a very odd place : in fact it will look green when sunlight is not available. This is (I am sure) Radiums point. Many are involved in the search for truly green electricity but we really also need red and blue counterparts to produce white light and all its variants. NOBODY APPEARS TO BE RESEARCHING INTO RED AND BLUE ELECTRICITY. We must act now before it is too late The demise of the eastern block has pretty much ended research into red electricity, although some interesting work continues to comes out of the more hard line schools in China. Blue electricity however, is just too sad to contemplate. -- jeff |
#37
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
jeff wrote: RHRRC wrote: Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? There have been zillions of replies which all miss the point entirely. It is of no practical use to make green light with high frequency AC current - what you need is a steady green light which is best (steadiest) using smoothed DC. For this a green source of DC electricity is required - viable methods of producing green electricity is currently attracting much attention and research funding throughout the western world. I am sure it will not be long before such green electricity is commonplace. What, I am sure, Radium has cleverly alluded to (and hence started the discussion upon) is the fact that upon the arrival of plentiful green electricity, and hence green light, the world will look a very odd place : in fact it will look green when sunlight is not available. This is (I am sure) Radiums point. Many are involved in the search for truly green electricity but we really also need red and blue counterparts to produce white light and all its variants. NOBODY APPEARS TO BE RESEARCHING INTO RED AND BLUE ELECTRICITY. We must act now before it is too late The demise of the eastern block has pretty much ended research into red electricity, although some interesting work continues to comes out of the more hard line schools in China. Blue electricity however, is just too sad to contemplate. -- jeff I am sure that were there sufficient a number of eminent scientists charged with working on the problem both red and blue electricity would come to one or more of them in a flash. |
#38
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
"jeff" wrote in message news:dLdtg.10809$Ep.10795@trnddc08... RHRRC wrote: Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? There have been zillions of replies which all miss the point entirely. It is of no practical use to make green light with high frequency AC current - what you need is a steady green light which is best (steadiest) using smoothed DC. For this a green source of DC electricity is required - viable methods of producing green electricity is currently attracting much attention and research funding throughout the western world. I am sure it will not be long before such green electricity is commonplace. What, I am sure, Radium has cleverly alluded to (and hence started the discussion upon) is the fact that upon the arrival of plentiful green electricity, and hence green light, the world will look a very odd place : in fact it will look green when sunlight is not available. This is (I am sure) Radiums point. Many are involved in the search for truly green electricity but we really also need red and blue counterparts to produce white light and all its variants. NOBODY APPEARS TO BE RESEARCHING INTO RED AND BLUE ELECTRICITY. We must act now before it is too late The demise of the eastern block has pretty much ended research into red electricity, although some interesting work continues to comes out of the more hard line schools in China. Blue electricity however, is just too sad to contemplate. -- jeff I think you'll find that blue electricity is easy to generate. The problem is that it doesn't interact well with fuses. Tim Ward |
#39
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
Tim Ward wrote: "jeff" wrote in message news:dLdtg.10809$Ep.10795@trnddc08... RHRRC wrote: Radium wrote: Hi: Green light has a wavelength of about 510 nm. Is it possible to generate green light using an AC electric current that has frequency high enough to have a wavelength of 510 nm? Has this ever been done before? AFAIK, an AC current generates electromagnetic waves of the same frequency of the current. In USA, electric power generators radiate 60 Hz photons. I would think it is possible to produce green light using an AC current that has a frequency of 510 nm. Am I right? There have been zillions of replies which all miss the point entirely. It is of no practical use to make green light with high frequency AC current - what you need is a steady green light which is best (steadiest) using smoothed DC. For this a green source of DC electricity is required - viable methods of producing green electricity is currently attracting much attention and research funding throughout the western world. I am sure it will not be long before such green electricity is commonplace. What, I am sure, Radium has cleverly alluded to (and hence started the discussion upon) is the fact that upon the arrival of plentiful green electricity, and hence green light, the world will look a very odd place : in fact it will look green when sunlight is not available. This is (I am sure) Radiums point. Many are involved in the search for truly green electricity but we really also need red and blue counterparts to produce white light and all its variants. NOBODY APPEARS TO BE RESEARCHING INTO RED AND BLUE ELECTRICITY. We must act now before it is too late The demise of the eastern block has pretty much ended research into red electricity, although some interesting work continues to comes out of the more hard line schools in China. Blue electricity however, is just too sad to contemplate. -- jeff I think you'll find that blue electricity is easy to generate. The problem is that it doesn't interact well with fuses. Tim Ward By "blue" electricity, I assume you are talking about the bluish-white light that is generated when electricity is at a high-enough voltage to pass through air. As the current passes through the air, the air heats up to temperatures adequate enough to produce a bluish-white light. This light, however, is incandescent, and nothing to do with the production of light I am referring to. When I was talking about electrically-generating 510 nm light, my description was to use an AC generator that outputs extremely high frequency AC current that gives of electromagnetic waves at 510 nm. As other posters have pointed out, the electric current would have to change direction [alternate] at around 580 trillion times a second. AC current almost always produces electromagnetic radiation at the same frequency. |
#40
Posted to sci.physics,sci.electronics.basics,sci.energy,sci.optics,alt.electronics
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Generating green light using a 510 nm AC current
In article . com,
Radium wrote: I think you'll find that blue electricity is easy to generate. The problem is that it doesn't interact well with fuses. Tim Ward By "blue" electricity, I assume you are talking about the bluish-white light that is generated when electricity is at a high-enough voltage to pass through air. Are you real? -- Relf's Law? -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Bull**** repeated to the limit of infinity asymptotically approaches the odour of roses." Corollary -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³It approaches the asymptote faster, the more pseduos¹ you throw in your formulas.² -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³Gravity is one of the four fundamental interactions. The classical theory of gravity - Einstein's general relativity - is the subject of this book.² : Hartle/ Gravity pg 1 -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Jaffa cakes. Sweet delicious orange jaffa goodness, and an abject lesson why parroting information from the web will not teach you cosmology. -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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