On Thursday, 26 April 2018 12:52:26 UTC+1, The Natural Philosopher wrote:
On 26/04/18 11:48, whisky-dave wrote:
On Thursday, 26 April 2018 10:39:53 UTC+1, The Natural Philosopher wrote:
On 26/04/18 10:29, whisky-dave wrote:
On Wednesday, 25 April 2018 17:57:30 UTC+1, Archibald Tarquin Blenkinsopp wrote:
On Wed, 25 Apr 2018 08:44:56 -0700 (PDT), whisky-dave
wrote:
On Wednesday, 25 April 2018 15:44:18 UTC+1, Roger Hayter wrote:
whisky-dave wrote:
On Tuesday, 24 April 2018 17:33:30 UTC+1, Archibald Tarquin Blenkinsopp
wrote: On Tue, 24 Apr 2018 02:48:57 -0700 (PDT), whisky-dave
wrote:
snip
That would constitute a measurement. The act of doing this would make
the cable live, or dead.
No it would not.
Unless you can prove otherwise :-)
Try it and let us know.
That's not proving otherwise. Connecting any load is in fact making an
observation, whether the load be a DMM or an organic breathing entity.
then define load?, is the insulation around the conductor a load ?
IS the air a load, the only thing that can't be considered a load is a vacuum.
I know of a Mr Maxwell who might have disagreed with you over the
vacuum, depending how long the wire is and how fast the voltage is
changing.
what if two wires were 1 metre apart and had negligible cross sectional area and the force between those wires was 1x10^-7n in a vacuum.
--
Roger Hayter
1x10^-7n in a vacuum.
There we are, the measurement has been oserved, the cable is "live".
it's not a cable it's a wire. Do you know the differnce.
I certainly do not.
Then why not look it up, educate yourself.
http://www.differencebetween.info/di...cable-and-wire
one man's semantic pedantry
When working in education you really should try to get things like this correct.
As I explained to the academic that asked me to take the Vandergraaf generator and a meter to a lectuer room.
I asked her what sort of meter as I don't think we've ever used one in the past, she said oh sorry I'm bulgarian when I said a meter I ment a metre stick, you know the rulers you keep in the lab.
Tell us oh great one, when is a wire not a cable and vice versa?
Now you need to educate yuorself on the differnce bewteeen potential difference and voltage.
http://www.differencebetween.info/di...ial-difference
Oh dear.
In that article: "Electric potential difference is the same as voltage"
But NOT in calculations, we always use voltage when we mean potentail differnce.
We say that V=IR so without current there is NO voltage so in that case a live wire could be considered dead, but that doesn't mean there is NO potentail differnce, and that for me is the differnce.
It;s like standing on the edge of a cliff, theer'es the potential to kill yuotself by falling but if you don't fall that deosn't mean there is no danger/risk.
you might also need to understand what is actual meant by live.
I am smiling - do carry on.
OK Live today we are watching live football but is it at 240V ?
Why use the term live do you even know ?
So what voltages do you think we can say the wire/cable is live can we say it's live if we have 1V on it ?
Is static electricity live ?
So a charged ballon can be live.
and when is a PP3 battery dead or any other battery.
I have about 100 AAs, AAAs, 2032, PP3s and other batteries in a bucket to be recycled people tell me they have dead batteries but some of them sghow 0.8V and when tested have 20% power remaining and measure above 1 volt are those batteries dead or alive ?