Lowering Electrical Resistance with Liquid Nitrogen

The electrical resistance of a copper coil is dramatically decreased by cooling with liquid nitrogen.

Our website at: http://www.nurdrage.com

Category:

Science & Technology

Tags:

• electrical
• resistance
• cooling
• liquid
• nitrogen
• conductivity

[ApolloWasReal]

Here's a related demo. Connect a 50 ohm scope terminator to one end of a coax cable and plug the other into a low noise vhf/uhf single sideband (SSB) amateur radio receiver. Dunk the terminator in LN2. The audio noise level from the receiver will drop dramatically. You're literally hearing the thermal vibrations in the resistor slow down.

This is one standard way of measuring the internal noise in a radio preamplifier.

[NurdRage]

Now that is a good idea, I gotta try that :)

[boxer3main]

taking air out of copper with a cover is good as well. I wonder if the lack of oxygen is the bigger part of this ....

[NurdRage]

it's not.

[NurdRage]

I never said or even implied it was rocket science.

[Peter4101]

@Biotoxin388 If you have a batt outside the computer it will work in other words for thoughs that are reading into this a bit more.

Eletricity is a funny thing that we still have allot to understand and learn about.

[Biotoxin388]

@Peter4101 the wireing yes, the battery no

[Peter4101]

Computers run best in cooler temps. This dosen't surpise me to much.

[mrwideboy]

@pratt123 You are right but there is a lot if limitations it's very difficult to make those type of superconductors they are brittle so can't be wound on to a former easily ir someething to form a magnet. At the Ln2 temp range they also cant support a large current density, or magnetic fields. The major break though will be using these for computer processors.

[pratt123]

@mrwideboy I was under the impression that high-temperature superconductors are being developed/used. For example, even before 1986 when high-temperature superconductors were unknown, 30 K was the limit (much higher than 4.2K). The material YBCO superconducts below 92 K, within the limit of liquid nitrogen.

[Sophesumer]

@Nurdrage

You should do a video on Yttrium Barium Copper Oxide. I'm not sure if its possible to synthesize without special equipment, but it would be awesome to see you experimenting with it.

[mrwideboy]

@pratt123 no most superconductors need liquid helium at 4.2K

[GTHaroFITBMX]

@mrwideboy go suck ur ice cream and watch ur tv u fat earthquake-causing lowlife.

[oconnellcom]

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[Dark0Lord7]

@EasternCalifornia Lol, you might split the motherboard while pouring it due to the thermal difference that makes the board contract, thus breaking it.