Electricity

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Electricity

Postby StormTheEnemy on February 16th, 2018, 7:49 pm 

Could you pull electrons out of air or objects to make electricity?
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Re: Electricity

Postby Asparagus on February 16th, 2018, 9:19 pm 

Yes. Lightning results from a static charge produced by friction. If you want dynamic voltage, you'll have to use some kind of generator.
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Re: Electricity

Postby Serpent on February 17th, 2018, 1:21 am 

Of course I can. Why do you think I need a pseudonym? If they found out, they'd turn me into a weapon.
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Re: Electricity

Postby bangstrom on March 12th, 2018, 5:21 pm 

Serpent » February 17th, 2018, 12:21 am wrote:Of course I can. Why do you think I need a pseudonym? If they found out, they'd turn me into a weapon.

Your name is Nikola Tesla and you are on our list.
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Re: Electricity

Postby Event Horizon on March 12th, 2018, 9:50 pm 

On a serious note, when you heat a wire coil until it is red-hot or hotter, it sheds electrons. These were used in old electric valves before transistors took over in the 1950's. However, the element and receptors are encased in a vacuum. This gave rise to electronic amplifiers and old CRT screens. It was also valuable to folks like Alan Turing in his bid to invent a computer, which he succeeded in doing to crack the Enigma Code and shorten the war.

Anecdote: I was walking down the road to the beach with my carbon fibre fishing rod. It was a bit stormy, and my fishing rod was picking up electricity somehow and transfering it to my hands. This was a bit uncomfortable to say the least. I didn't go fishing in the end. It was a peculiar experience. The energy must have been harvested from the air and transferred to me. I don't know if this is a common thing or not.
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Re: Electricity

Postby Watson on March 12th, 2018, 10:23 pm 

May not be related but I have a key fob that reacts to a pad on the door to unlock the door. Common i know, but how does it work?

??
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Re: Electricity

Postby zetreque on March 12th, 2018, 10:41 pm 

StormTheEnemy » Fri Feb 16, 2018 3:49 pm wrote:Could you pull electrons out of air or objects to make electricity?


Isn't it called bitcoin?
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Re: Electricity

Postby zetreque on March 12th, 2018, 10:46 pm 

Watson » Mon Mar 12, 2018 6:23 pm wrote:May not be related but I have a key fob that reacts to a pad on the door to unlock the door. Common i know, but how does it work?

??


I think that's a conversion between or caused by an electron changing orbit of an atom or electrons moving to give off an electromagnetic wave.
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Re: Electricity

Postby Watson on March 12th, 2018, 11:54 pm 

Well there seems to be no power in the key fob, so an electromagnetic wave/field at the door pad some how interacts with the fob like some reflective interaction.
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Re: Electricity

Postby zetreque on March 13th, 2018, 12:00 am 

Watson » Mon Mar 12, 2018 8:54 pm wrote:Well there seems to be no power in the key fob, so an electromagnetic wave/field at the door pad some how interacts with the fob like some reflective interaction.


Not even a small button cell battery? Maybe you are talking about RFID. I always assume the reader is powered and scans the vicinity for the EM signature.
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Re: Electricity

Postby Event Horizon on March 13th, 2018, 12:36 am 

Don't forget security tags used by shops. They have no power source either. This might suggest that when the metal strips are interrogated by using a magnetic field they cause a variation in the magnetic field that is able to trigger a response. Sometimes these strips have to be demagnetized at the till to prevent the alarms going off on leaving the shop. Could the fob work in the same way?
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Re: Electricity

Postby rossweinberg21 on May 14th, 2018, 3:35 am 

I think you should read this article:

http://wtamu.edu/~cbaird/sq/2016/03/17/does-a-source-of-electricity-ever-run-out-of-electrons/
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Re: Electricity

Postby GregoryHill on May 28th, 2018, 5:04 am 

[quote=]I think you should read this article:

http://wtamu.edu/~cbaird/sq/2016/03/17/does-a-source-of-electricity-ever-run-out-of-electrons/[/quote]

I am a newbie in this forum, I thoroughly read this article, such a nice and informative piece of content you shared. Thanks for that.
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Re: Electricity

Postby RjMaan on June 20th, 2018, 12:44 pm 

Well thunder storm and lightening is an example but one has to develop large amount of static current first for that.
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