Why do LEDs generate heat? I want a technical answer not "because they're inefficient". And will we ever make them more efficient?

On Thu, 03 Oct 2019 14:29:30 +0100, Commander Kinsey wrote:

Why do LEDs generate heat? I want a technical answer not "because they're inefficient". And will we ever make them more efficient?

I got useful answers from Quora:

"LEDs are ever more and more efficient. In the last 40 years, tremendous strides have been made. They generate heat because they are conducting electricity through semiconductors. Unlike metals which have very little resistance to electric currents, semiconductors offer more resistance. Not as much as true nonmetals, but still more than metals. It is the resistance of the semiconductor layers, both N and P, and the resistance of the junction itself, that generate the heat."

"Every electronic device is less than 100 percent efficient. On a low level, it is due to the law of probability, or as the physicists call it, entropy. The odds of all those electrons conveying their energy into photons is very low. Some are always making random transitions, generating heat instead of light."

On Thu, 03 Oct 2019 14:29:30 +0100, Birdbrain Macaw (aka "Commander Kinsey",
"James Wilkinson", "Steven ******","Bruce Farquar", "Fred Johnson, etc.),
the pathological resident idiot and attention whore of all the uk ngs,
blathered again:

FLUSH the abnormal sociopathic attention whore's latest idiotic
attention-baiting bull**** unread again

So you HAD to crosspost your newest bait to FOUR different groups again,
just so you could get all the more attention, you attention-starved,
sociopathic ******!

--
about Birdbrain Macaw's (now "James Wilkinson" LOL)
trolling:
"He is a well known attention seeking troll and every reply you
make feeds him.
Starts many threads most of which die quick as on the UK groups anyone
with sense Kill filed him ages ago which is why he now cross posts to
the US groups for a new audience.
This thread was unusual in that it derived and continued without him
to a large extent and his silly questioning is an attempt to get
noticed again."
MID:

--
ItsJoanNotJoann addressing Birdbrain Macaw's (now "James Wilkinson" LOL):
"You're an annoying troll and I'm done with you and your
stupidity."
MID:

--
AndyW addressing Birdbrain:
"Troll or idiot?...
You have been presented with a viewpoint with information, reasoning,
historical cases, citations and references to back it up and wilfully
ignore all going back to your idea which has no supporting information."
MID:

--
Phil Lee adressing Birdbrain Macaw:
"You are too stupid to be wasting oxygen."
MID:

--
Phil Lee describing Birdbrain Macaw:
"I've never seen such misplaced pride in being a ****ing moronic motorist."
MID:

--
Tony944 addressing Birdbrain Macaw:
"I seen and heard many people but you are on top of list being first class
ass hole jerk. ...You fit under unconditional Idiot and should be put in
mental institution.
MID:

--
Pelican to Birdbrain Macaw:
"Ok. I'm persuaded . You are an idiot."
MID:

--
DerbyDad03 addressing Birdbrain Macaw (now "James Wilkinson" LOL):
"Frigging Idiot. Get the hell out of my thread."
MID:

--
Kerr Mudd-John about Birdbrain Macaw (now "James Wilkinson" LOL):
"It's like arguing with a demented frog."
MID:

--
Mr Pounder Esquire about Birdbrain Macaw (now "James Wilkinson" LOL):
"the **** poor delivery boy with no hot running water, 11 cats and
several parrots living in his hovel."
MID:

--
Rob Morley about Birdbrain:
"He's a perennial idiot"
MID: 20170519215057.56a1f1d4@Mars

--
JoeyDee to Birdbrain
"I apologize for thinking you were a jerk. You're just someone with an IQ
lower than your age, and I accept that as a reason for your comments."
MID: l-september.org

--
Sam Plusnet about Birdbrain (now "James Wilkinson Sword" LOL):
"He's just desperate to be noticed. Any attention will do, no matter how
negative it may be."
MID:

--
asking Birdbrain:
"What, were you dropped on your head as a child?"
MID:

--
Christie addressing endlessly driveling Birdbrain Macaw (now "James
Wilkinson" LOL):
"What are you resurrecting that old post of mine for? It's from last
month some time. You're like a dog who's just dug up an old bone they
hid in the garden until they were ready to have another go at it."
MID:

--
Mr Pounder's fitting description of Birdbrain Macaw:
"You are a well known fool, a tosser, a pillock, a stupid unemployable
sponging failure who will always live alone and will die alone. You will not
be missed."
MID:

--
Richard to pathetic ****** Hucker:
"You haven't bred?
Only useful thing you've done in your pathetic existence."
MID:

--
about Birdbrain (now "James Wilkinson" LOL):
""not the sharpest knife in the drawer"'s parents sure made a serious
mistake having him born alive -- A total waste of oxygen, food, space,
and bandwidth."
MID:

--
Mr Pounder exposing sociopathic Birdbrain:
"You will always be a lonely sociopath living in a ******** with no hot
running water with loads of stinking cats and a few parrots."
MID:

--
francis about Birdbrain (now "James Wilkinson" LOL):
"He seems to have a reputation as someone of limited intelligence"
MID:

--
Peter Moylan about Birdbrain (now "James Wilkinson" LOL):
"If people like JWS didn't exist, we would have to find some other way to
explain the concept of "invincible ignorance"."
MID:

--
Lewis about nym-shifting Birdbrain:
"Typical narcissist troll, thinks his **** is so grand he has the right to
try to force it on everyone."
MID:

Commander Kinsey wrote

Why do LEDs generate heat?

Because not all the electricity used is turned into light.

I want a technical answer not "because they're inefficient".
And will we ever make them more efficient?

Very likely with the higher powered leds.

On Fri, 4 Oct 2019 03:09:32 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


I want a technical answer not "because they're inefficient".
And will we ever make them more efficient?

Very likely with the higher powered leds.

You two idiots had better wonder whether they will ever find a cure for
psychopathy and sociopathy which you deranged idiots keep exhibiting here!

--
Website (from 2007) dedicated to the 85-year-old trolling senile
cretin from Oz:
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

On Thu, 03 Oct 2019 19:29:42 +0100, Robert wrote:

On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

True, but it's the LEDs themselves that are the warmest, and also the most susceptible to heat.

"Commander Kinsey" wrote in message
news
On Thu, 03 Oct 2019 19:29:42 +0100, Robert wrote:

On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

True, but it's the LEDs themselves that are the warmest, and also the most
susceptible to heat.

But if you feel a Philips Hue bulb which is the size of an old tungsten 100W
bulb, the part that gives off light (presumably where the LEDs are) is cool.
It is the neck, near the fitting, which gets hot - and I presume that's
where the PSU is.

Likewise for GU10 bulbs (Philips Hue or ordinary non-dimmable LED) the front
and conical sides don't get hot, whereas the neck near the fitting gets hot.

"NY" wrote in message
...
"Commander Kinsey" wrote in message
news
On Thu, 03 Oct 2019 19:29:42 +0100, Robert
wrote:

On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

True, but it's the LEDs themselves that are the warmest, and also the
most susceptible to heat.

But if you feel a Philips Hue bulb which is the size of an old tungsten
100W bulb, the part that gives off light (presumably where the LEDs are)
is cool.

Mine isnt, its warmer than me.

It is the neck, near the fitting, which gets hot - and I presume that's
where the PSU is.

Likewise for GU10 bulbs (Philips Hue or ordinary non-dimmable LED) the
front and conical sides don't get hot, whereas the neck near the fitting
gets hot.

On Thu, 3 Oct 2019 19:29:42 +0100, Robert, another brain dead,
troll-feeding, seinile idiot, blathered:


Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

Yet another senile idiot who doesn't get what's going on here! BG

On Thu, 3 Oct 2019 19:50:02 +0100, NY, the notorious, troll-feeding senile
idiot, blathered again:


But if you feel a Philips Hue bulb which is the size of an old tungsten 100W
bulb, the part that gives off light (presumably where the LEDs are) is cool.
It is the neck, near the fitting, which gets hot - and I presume that's
where the PSU is.

Likewise for GU10 bulbs (Philips Hue or ordinary non-dimmable LED) the front
and conical sides don't get hot, whereas the neck near the fitting gets hot.

So, for how long will you idiots still go on like that again? Until the
sociopathic attention whore is fed up with you again? Will you troll-feeding
senile idiots NEVER learn?

On Fri, 4 Oct 2019 05:12:47 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


But if you feel a Philips Hue bulb which is the size of an old tungsten
100W bulb, the part that gives off light (presumably where the LEDs are)
is cool.

Mine isnt, its warmer than me.

LOL! Auto-contradicting senile idiot! Let's all hope that you'll SOON reach
room temperature!

--
Sqwertz to Rot Speed:
"This is just a hunch, but I'm betting you're kinda an argumentative
asshole.
MID:

On Thu, 03 Oct 2019 19:50:02 +0100, NY wrote:

"Commander Kinsey" wrote in message
news
On Thu, 03 Oct 2019 19:29:42 +0100, Robert wrote:

On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

True, but it's the LEDs themselves that are the warmest, and also the most
susceptible to heat.

But if you feel a Philips Hue bulb which is the size of an old tungsten 100W
bulb, the part that gives off light (presumably where the LEDs are) is cool.
It is the neck, near the fitting, which gets hot - and I presume that's
where the PSU is.

Or where the heatsink from the LEDs is.

Likewise for GU10 bulbs (Philips Hue or ordinary non-dimmable LED) the front
and conical sides don't get hot, whereas the neck near the fitting gets hot.

On Thu, 03 Oct 2019 22:21:00 +0100, Colonel Edmund J. Burke wrote:

On 10/3/2019 6:49 AM, Commander Kinsey wrote:
On Thu, 03 Oct 2019 14:29:30 +0100, Commander Kinsey wrote:

Why do LEDs generate heat? I want a technical answer not "because they're inefficient". And will we ever make them more efficient?

I got useful answers from Quora:

"LEDs are ever more and more efficient. In the last 40 years, tremendous strides have been made. They generate heat because they are conducting electricity through semiconductors. Unlike metals which have very little resistance to electric currents, semiconductors offer more resistance. Not as much as true nonmetals, but still more than metals. It is the resistance of the semiconductor layers, both N and P, and the resistance of the junction itself, that generate the heat."

"Every electronic device is less than 100 percent efficient. On a low level, it is due to the law of probability, or as the physicists call it, entropy. The odds of all those electrons conveying their energy into photons is very low. Some are always making random transitions, generating heat instead of light."

I wish you'd make a "random transition" the **** outa here, limey asshole!

Learn to use a killfile.

On 10/3/19 1:29 PM, Robert wrote:
On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

I have a LED bulb (60W equivalent) in a lamp here. The bulb itself
doesn't get hot like an incandescent bulb does. What gets hot is an area
around the base.

--
82 days until the winter celebration (Wed, Dec 25, 2019 12:00:00 AM for
1 day).

Mark Lloyd
http://notstupid.us/

"You didn't hear it You didn't see it..." ...how absurd it all seems
without any proof" -- from "Tommy" by 'The Who'

On Fri, 04 Oct 2019 20:32:33 +0100, Mark Lloyd wrote:

On 10/3/19 1:29 PM, Robert wrote:
On 03/10/2019 14:29, Commander Kinsey wrote:
Why do LEDs generate heat? I want a technical answer not "because
they're inefficient". And will we ever make them more efficient?
Besides the inefficiencies in the LED itself which other posters have
covered, LED lamps have some current regulation or power supply built-in
which will not be 100% efficient and thus generates heat.

I have a LED

That irritates me, why don't you write "an LED"? How do you say "LED"? I say "Ell Eee Dee", not "Light Emitting Diode". So it needs an "an", not an "a".

bulb (60W equivalent) in a lamp here.

60W? Are you a Klingon and love darkness? I use 100W and 150W bulbs only. And lots of them. My living room (7 metres by 4 metres) contains 13 90W bulbs.

The bulb itself
doesn't get hot like an incandescent bulb does. What gets hot is an area
around the base.

Through the heatsink probably, most of the heat is generated by the LEDs, not the far more efficient power supply.

On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"?* How do you say "LED"?
I say "Ell Eee Dee", not "Light Emitting Diode".* So it needs an "an",
not an "a".

"an LED" irritates me. I know the word is "light".

bulb (60W equivalent) in a lamp here.

60W?* Are you a Klingon and love darkness?* I use 100W and 150W bulbs
only.* And lots of them.* My living room (7 metres by 4 metres) contains
13 90W bulbs.

It also matters if the light source is in the right place, like from
behind is good if you're reading or watching TV.

Some people think more light is always better. I remember working behind
a TV (26-inch CRT console), where I could see OK. Then someone, trying
to be helpful, turned on a nearby wall lamp. The effect of that is that
the area behind the TV became completely BLACK.

[snip]

--
81 days until the winter celebration (Wed, Dec 25, 2019 12:00:00 AM for
1 day).

Mark Lloyd
http://notstupid.us/

"Tinnitus is a pain in the neck"

On Sat, 05 Oct 2019 19:46:08 +0100, Mark Lloyd wrote:

On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"? How do you say "LED"?
I say "Ell Eee Dee", not "Light Emitting Diode". So it needs an "an",
not an "a".

"an LED" irritates me. I know the word is "light".

But which would you say if you read the sentence out loud? Do you say the letters like me, or do you say the full words? I say "DVLA" not "Driver and Vehicle Licensing Authority"

bulb (60W equivalent) in a lamp here.

60W? Are you a Klingon and love darkness? I use 100W and 150W bulbs
only. And lots of them. My living room (7 metres by 4 metres) contains
13 90W bulbs.

It also matters if the light source is in the right place, like from
behind is good if you're reading or watching TV.

I prefer the whole room to be evenly lit.

Some people think more light is always better. I remember working behind
a TV (26-inch CRT console), where I could see OK. Then someone, trying
to be helpful, turned on a nearby wall lamp. The effect of that is that
the area behind the TV became completely BLACK.

More light is better if the whole room is lit evenly. Which is why I prefer strip lights to point sources. Much better if you're soldering for example, you don't create shadows, as light can come to the workpiece from all angles, no matter where your body/head/hands/tools are.

On Sat, 5 Oct 2019 13:46:08 -0500, Mark Lloyd, another absolutely brain
dead, troll-feeding, senile cretin, drivelled:


"an LED" irritates me. I know the word is "light".

You must about as big an idiot as the retarded troll you keep feeding,
senile cretin! LOL

"Mark Lloyd" wrote in message
...
On 10/4/19 2:51 PM, Commander Kinsey wrote:

I have a LED

That irritates me, why don't you write "an LED"? How do you say "LED"?
I say "Ell Eee Dee", not "Light Emitting Diode". So it needs an "an",
not an "a".

"an LED" irritates me. I know the word is "light".

I think it is normal convention that an initialism that starts with a *vowel
sound* takes "an", on the grounds of euphony: that in normal English, you
never precede a word that starts with a vowel sound with "a".

Hence an apple, but a uniform. A hedge or a hotel or a historic event but an
honourable occasion (H is sounded for the first three but silent for the
last one). For some reason, it considered "better" to use "an" before hotel
and historic, even though the H is sounded. That sounds as daft to my ears
as "an spoon" - it's not a vowel sound so you use "a". I could understand if
people pronounce hotel the French way, but it needs to be consistent: "an
'otel" or "a hotel".


As regards initialisms/abbreviations, you do get anomalies like "an LED"
(ell-ee-dee) that starts with a consonant but "a UFO" (you-eff-oh) that
starts with a vowel pronounced as a consonant.

"Commander Kinsey" wrote in message
news
On Sat, 05 Oct 2019 19:46:08 +0100, Mark Lloyd wrote:

On 10/4/19 2:51 PM, Commander Kinsey wrote:
bulb (60W equivalent) in a lamp here.

60W? Are you a Klingon and love darkness? I use 100W and 150W bulbs
only. And lots of them. My living room (7 metres by 4 metres) contains
13 90W bulbs.

It also matters if the light source is in the right place, like from
behind is good if you're reading or watching TV.

I prefer the whole room to be evenly lit.

Some people think more light is always better. I remember working behind
a TV (26-inch CRT console), where I could see OK. Then someone, trying
to be helpful, turned on a nearby wall lamp. The effect of that is that
the area behind the TV became completely BLACK.

More light is better if the whole room is lit evenly. Which is why I
prefer strip lights to point sources. Much better if you're soldering for
example, you don't create shadows, as light can come to the workpiece from
all angles, no matter where your body/head/hands/tools are.


Exactly. It is the use that you are making of the light which governs
whether you want a point source and directional lighting, or a diffuse
light.

I prefer to read with a light over my shoulder to light the pages of the
book, but with the rest of the room dark enough than I'm not distracted by
everything else around the book. Likewise for watching TV - screen brighter
than ambient light, even if the ambient light isn't reducing screen contrast
by brightening the dark parts of it.


My wife prefers uniform lighting - even if that means you are looking into
the light. When reading in bed, she will turn on the overhead light (single
ceiling rose or lots of GU10 spotlights) which illuminate the rest of the
room and shine right in your face, but leave the pages of the book in
shadow, She believes that reading by over-the-shoulder light, with the book
brighter than the background, strains your eyes.

On Sat, 5 Oct 2019 20:33:14 +0100, NY, the notorious, troll-feeding,
endlessly blathering senile idiot, blathered again:



My wife prefers uniform lighting

You got a "wife", troll-feeding senile idiot? Does she know about you
sucking troll cock on Usenet on every occasion? BG

On Sat, 05 Oct 2019 20:23:02 +0100, NY wrote:

"Mark Lloyd" wrote in message
...
On 10/4/19 2:51 PM, Commander Kinsey wrote:

I have a LED

That irritates me, why don't you write "an LED"? How do you say "LED"?
I say "Ell Eee Dee", not "Light Emitting Diode". So it needs an "an",
not an "a".

"an LED" irritates me. I know the word is "light".

I think it is normal convention that an initialism that starts with a *vowel
sound* takes "an", on the grounds of euphony: that in normal English, you
never precede a word that starts with a vowel sound with "a".

Hence an apple, but a uniform. A hedge or a hotel or a historic event but an
honourable occasion (H is sounded for the first three but silent for the
last one). For some reason, it considered "better" to use "an" before hotel
and historic, even though the H is sounded. That sounds as daft to my ears
as "an spoon" - it's not a vowel sound so you use "a". I could understand if
people pronounce hotel the French way, but it needs to be consistent: "an
'otel" or "a hotel".

My god! I agree with you completely. I was about to say the same thing as soon as you wrote "a historic event", it's really grating to my ears to hear an historic.

Also, Americans get the Hs wrong. Like erb, as in marijuana. An 'erb would be fine, but they think the H is always silent.

As regards initialisms/abbreviations, you do get anomalies like "an LED"
(ell-ee-dee) that starts with a consonant but "a UFO" (you-eff-oh) that
starts with a vowel pronounced as a consonant.

I say "a URL" for a web address, but I knew someone who said "an url", as in how you would pronounce "hurl" with a silent H. He insisted that acronyms should be pronounced like words. WLED became "well-ed", as in "well" followed by the name "Ed". I assume because pronouncing a W before an L was too difficult, so he then added extra vowels.

On Sat, 05 Oct 2019 20:33:14 +0100, NY wrote:

"Commander Kinsey" wrote in message
news
On Sat, 05 Oct 2019 19:46:08 +0100, Mark Lloyd wrote:

On 10/4/19 2:51 PM, Commander Kinsey wrote:
bulb (60W equivalent) in a lamp here.

60W? Are you a Klingon and love darkness? I use 100W and 150W bulbs
only. And lots of them. My living room (7 metres by 4 metres) contains
13 90W bulbs.

It also matters if the light source is in the right place, like from
behind is good if you're reading or watching TV.

I prefer the whole room to be evenly lit.

Some people think more light is always better. I remember working behind
a TV (26-inch CRT console), where I could see OK. Then someone, trying
to be helpful, turned on a nearby wall lamp. The effect of that is that
the area behind the TV became completely BLACK.

More light is better if the whole room is lit evenly. Which is why I
prefer strip lights to point sources. Much better if you're soldering for
example, you don't create shadows, as light can come to the workpiece from
all angles, no matter where your body/head/hands/tools are.


Exactly. It is the use that you are making of the light which governs
whether you want a point source and directional lighting, or a diffuse
light.

I prefer to read with a light over my shoulder to light the pages of the
book, but with the rest of the room dark enough than I'm not distracted by
everything else around the book. Likewise for watching TV - screen brighter
than ambient light, even if the ambient light isn't reducing screen contrast
by brightening the dark parts of it.

I always like everything lit in the room, or I doze off.

My wife prefers uniform lighting - even if that means you are looking into
the light. When reading in bed, she will turn on the overhead light (single
ceiling rose or lots of GU10 spotlights) which illuminate the rest of the
room and shine right in your face, but leave the pages of the book in
shadow, She believes that reading by over-the-shoulder light, with the book
brighter than the background, strains your eyes.

That may be true, and why I feel sleepy if I do so. But then some people read to get to sleep.

On 2019-10-05 12:48 p.m., Commander Kinsey wrote:
On Sat, 05 Oct 2019 20:33:14 +0100, NY wrote:

"Commander Kinsey" wrote in message
news
On Sat, 05 Oct 2019 19:46:08 +0100, Mark Lloyd wrote:

On 10/4/19 2:51 PM, Commander Kinsey wrote:
bulb (60W equivalent) in a lamp here.

60W?* Are you a Klingon and love darkness?* I use 100W and 150W bulbs
only.* And lots of them.* My living room (7 metres by 4 metres)
contains
13 90W bulbs.

It also matters if the light source is in the right place, like from
behind is good if you're reading or watching TV.

I prefer the whole room to be evenly lit.

Some people think more light is always better. I remember working
behind
a TV (26-inch CRT console), where I could see OK. Then someone, trying
to be helpful, turned on a nearby wall lamp. The effect of that is that
the area behind the TV became completely BLACK.

More light is better if the whole room is lit evenly.* Which is why I
prefer strip lights to point sources.* Much better if you're
soldering for
example, you don't create shadows, as light can come to the workpiece
from
all angles, no matter where your body/head/hands/tools are.


Exactly. It is the use that you are making of the light which governs
whether you want a point source and directional lighting, or a diffuse
light.

I prefer to read with a light over my shoulder to light the pages of the
book, but with the rest of the room dark enough than I'm not
distracted by
everything else around the book. Likewise for watching TV - screen
brighter
than ambient light, even if the ambient light isn't reducing screen
contrast
by brightening the dark parts of it.

I always like everything lit in the room, or I doze off.

My wife prefers uniform lighting - even if that means you are looking
into
the light. When reading in bed, she will turn on the overhead light
(single
ceiling rose or lots of GU10 spotlights) which illuminate the rest of the
room and shine right in your face, but leave the pages of the book in
shadow, She believes that reading by over-the-shoulder light, with the
book
brighter than the background, strains your eyes.

That may be true, and why I feel sleepy if I do so.* But then some
people read to get to sleep.

i have sex to fall asleep and i don't care what the lights are doing

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"?* How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode".* So it needs
an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

--
Max Demian

On Sat, 05 Oct 2019 23:08:43 +0100, Max Demian wrote:

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"? How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode". So it needs
an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

What do you mean by "pronounce it as an acronym"? I would have said that means "ell eee dee" as in you're treating it as an acronym rather than a word and spelling it out.

On 06/10/2019 00:14, Commander Kinsey wrote:
On Sat, 05 Oct 2019 23:08:43 +0100, Max Demian
wrote:

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"?* How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode".* So it needs
an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

What do you mean by "pronounce it as an acronym"?* I would have said
that means "ell eee dee" as in you're treating it as an acronym rather
than a word and spelling it out.

An acronym is a pronounceable abbreviation, e.g. NATO, scuba, radar.

--
Max Demian

On Sun, 6 Oct 2019 10:07:15 +0100, Max Dumb, another mentally deficient
inveterate troll-feeding senile idiot, blathered again:


What do you mean by "pronounce it as an acronym"?* I would have said
that means "ell eee dee" as in you're treating it as an acronym rather
than a word and spelling it out.

An acronym is a pronounceable abbreviation, e.g. NATO, scuba, radar.

LOL Oh, no, another bull**** "conversation" ensuing!

On 10/5/19 1:59 PM, Commander Kinsey wrote:

[snip]

More light is better if the whole room is lit evenly.* Which is why I
prefer strip lights to point sources.* Much better if you're soldering
for example, you don't create shadows, as light can come to the
workpiece from all angles, no matter where your body/head/hands/tools are.

In the case I described, the lamp (a "helpful" person tuned on) was to
my side, almost the same direction as the back of the TV.

--
80 days until the winter celebration (Wed, Dec 25, 2019 12:00:00 AM for
1 day).

Mark Lloyd
http://notstupid.us/

If a member of McDonalds' staff was God:

"OK, one Universe. Uh, you want
fries with that?"

On 10/5/19 2:33 PM, NY wrote:

[snip]

My wife prefers uniform lighting - even if that means you are looking
into the light. When reading in bed, she will turn on the overhead light
(single ceiling rose or lots of GU10 spotlights) which illuminate the
rest of the room and shine right in your face, but leave the pages of
the book in shadow, She believes that reading by over-the-shoulder
light, with the book brighter than the background, strains your eyes.

Over-the-shoulder light would be a lot better than black letters on a
very dark gray background (because your eyes are adapted to the bright
light coming around the edges of the book).

--
80 days until the winter celebration (Wed, Dec 25, 2019 12:00:00 AM for
1 day).

Mark Lloyd
http://notstupid.us/

If a member of McDonalds' staff was God:

"OK, one Universe. Uh, you want
fries with that?"

On Sun, 6 Oct 2019 12:57:57 -0500, Mark Lloyd, another absolutely brain
dead, troll-feeding, senile cretin, drivelled:


Over-the-shoulder light would be a lot better than black letters on a
very dark gray background

It would still be a LOT better if you just shut your stupid senile gob, you
notorious, troll-feeding senile asshole!

On Sun, 6 Oct 2019 12:54:27 -0500, Mark Lloyd, another absolutely brain
dead, troll-feeding, senile cretin, drivelled:


In the case I described, the lamp (a "helpful" person tuned on) was to
my side, almost the same direction as the back of the TV.

It's rather obvious now, a troll-feeding senile idiot is as much of a
driveling mentally deficient idiot as the troll he keeps feeding!

On Sun, 06 Oct 2019 10:07:15 +0100, Max Demian wrote:

On 06/10/2019 00:14, Commander Kinsey wrote:
On Sat, 05 Oct 2019 23:08:43 +0100, Max Demian
wrote:

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"? How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode". So it needs
an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

What do you mean by "pronounce it as an acronym"? I would have said
that means "ell eee dee" as in you're treating it as an acronym rather
than a word and spelling it out.

An acronym is a pronounceable abbreviation, e.g. NATO, scuba, radar.

Ah, I always say acronym to mean abbreviation. I don't care if it's technically wrong :-)

Commander Kinsey wrote:
On Sun, 06 Oct 2019 10:07:15 +0100, Max Demian
wrote:
On 06/10/2019 00:14, Commander Kinsey wrote:
On Sat, 05 Oct 2019 23:08:43 +0100, Max Demian
wrote:

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"? How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode". So it
needs an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

What do you mean by "pronounce it as an acronym"? I would have said
that means "ell eee dee" as in you're treating it as an acronym
rather than a word and spelling it out.

An acronym is a pronounceable abbreviation, e.g. NATO, scuba, radar.

Ah, I always say acronym to mean abbreviation. I don't care if it's
technically wrong :-)

Top notch troll phucker. Well done. Now why you just **** off and die?

On Mon, 07 Oct 2019 19:33:19 +0100, Mr Pounder Esquire wrote:

Commander Kinsey wrote:
On Sun, 06 Oct 2019 10:07:15 +0100, Max Demian
wrote:
On 06/10/2019 00:14, Commander Kinsey wrote:
On Sat, 05 Oct 2019 23:08:43 +0100, Max Demian
wrote:

On 05/10/2019 19:46, Mark Lloyd wrote:
On 10/4/19 2:51 PM, Commander Kinsey wrote:

[snip]

I have a LED

That irritates me, why don't you write "an LED"? How do you say
"LED"? I say "Ell Eee Dee", not "Light Emitting Diode". So it
needs an "an", not an "a".

"an LED" irritates me. I know the word is "light".

It's "a LED" if you pronounce it as an acronym.

What do you mean by "pronounce it as an acronym"? I would have said
that means "ell eee dee" as in you're treating it as an acronym
rather than a word and spelling it out.

An acronym is a pronounceable abbreviation, e.g. NATO, scuba, radar.

Ah, I always say acronym to mean abbreviation. I don't care if it's
technically wrong :-)

Top notch troll phucker. Well done. Now why you just **** off and die?

Don't bother trying to answer things that go over your head.

On Sun, 06 Oct 2019 18:54:27 +0100, Mark Lloyd wrote:

On 10/5/19 1:59 PM, Commander Kinsey wrote:

[snip]

More light is better if the whole room is lit evenly. Which is why I
prefer strip lights to point sources. Much better if you're soldering
for example, you don't create shadows, as light can come to the
workpiece from all angles, no matter where your body/head/hands/tools are.

In the case I described, the lamp (a "helpful" person tuned on) was to
my side, almost the same direction as the back of the TV.

The lighting in all my rooms comes from striplights all over the ceiling, so everything is lit nice and evenly.

On 2019-10-07 3:18 p.m., Commander Kinsey wrote:
On Sun, 06 Oct 2019 18:54:27 +0100, Mark Lloyd wrote:

On 10/5/19 1:59 PM, Commander Kinsey wrote:

[snip]

More light is better if the whole room is lit evenly.* Which is why I
prefer strip lights to point sources.* Much better if you're soldering
for example, you don't create shadows, as light can come to the
workpiece from all angles, no matter where your body/head/hands/tools
are.

In the case I described, the lamp (a "helpful" person tuned on) was to
my side, almost the same direction as the back of the TV.

The lighting in all my rooms comes from striplights all over the
ceiling, so everything is lit nice and evenly.

no it isn't and your light is a bare bulb in a night light