You should probably watch it repeatedly til you get a grasp on the point he was making hypothetically.
That reminds me of Tesla and his proposed new type of wireless energy transmission (not classical EM radiation) that he called "Non-Hertzian Waves".
In his Canadian patent, Tesla announced, "Be it known that I, Nikola Tesla, a citizen of the United States, residing in the Borough of Manhattan, in the City, County, and State of New York, have discovered a new and useful improvement in the art of transmitting electrical energy through the natural mediums..."
Unfortunately, Tesla's dream of transmitting electrical power wirelessly on a worldwide scale was not to become a reality.
The attachment shows Tesla's wireless transmission experimental station at Shoreham Long Island, August 22, 1907.
Attachments
I think Nikola Tesla was at the "Snake Oil" end of the Physics spectrum!
You know, everlasting light-bulbs, cars that run on water. Perpetual motion machines. That sort of nonsense! 🙄
The James Webb Space Telescope continues to interest me. I have been following its adventures intensely. Taking us back to 300,000 years after the alleged "Big Bang".
https://www.bbc.co.uk/news/science-environment-61268680
Designed 0perating temperature -230C. I'm OK with that. The Receiver must be cool to avoid thermal noise.
So what is this contradictory nonsense? -267C reached?
https://www.bbc.co.uk/news/science-environment-61086170
That is 6 degrees above Absolute Zero, which is -273C. Another 2 degrees lower to and it would be a Superconductor at liquid Helium temperatures.
I say this as a person who has a half unit Physics qualification in "PH212 FURTHER THERMODYNAMICS: LOW TEMPERATURE PHYSICS".
Somebody has got it wrong! You can't have it both ways.
You know, everlasting light-bulbs, cars that run on water. Perpetual motion machines. That sort of nonsense! 🙄
The James Webb Space Telescope continues to interest me. I have been following its adventures intensely. Taking us back to 300,000 years after the alleged "Big Bang".
https://www.bbc.co.uk/news/science-environment-61268680
Designed 0perating temperature -230C. I'm OK with that. The Receiver must be cool to avoid thermal noise.
So what is this contradictory nonsense? -267C reached?
https://www.bbc.co.uk/news/science-environment-61086170
That is 6 degrees above Absolute Zero, which is -273C. Another 2 degrees lower to and it would be a Superconductor at liquid Helium temperatures.
I say this as a person who has a half unit Physics qualification in "PH212 FURTHER THERMODYNAMICS: LOW TEMPERATURE PHYSICS".
Somebody has got it wrong! You can't have it both ways.
Nikola Tesla should be remembered as the first person to propose distributing electrical power to homes and factories using alternating current. This, of course, had distinct advantages over the direct current distribution system then in use courtesy of Edison.
He also built the first induction motor, and let's no forget his remarkable Tesla coil.
He did become rather, shall we say, eccentric. However we should give credit where credit is due.
He also built the first induction motor, and let's no forget his remarkable Tesla coil.
He did become rather, shall we say, eccentric. However we should give credit where credit is due.
Regarding the James Webb, I gave information on the required operating temperatures earlier in the thread and could see nothing puzzling. I also showed how the -267 degrees C is engineered. Can you explain what is "contradictory" about the figures Steve?
Well what is it? -230C or -267C? One must be precise.
And come off it! Tesla was an idiot:
I did Millikan's Experiment as a relative Child of 17.
https://en.wikipedia.org/wiki/Oil_drop_experiment
I DEFINITELY found Electrons.
And come off it! Tesla was an idiot:
I did Millikan's Experiment as a relative Child of 17.
https://en.wikipedia.org/wiki/Oil_drop_experiment
I DEFINITELY found Electrons.
There are a few different sensors on the Webb and they seem to have different temp requeiements. The lowest one is 6K or so, others not so low...
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Feynman tells how the value for the electron's charge changed over time. I found this fascinating.
http://calteches.library.caltech.edu/51/2/CargoCult.htm
Has anyone ever seen one of these devices?
A Crooke's Radiometer?
https://en.wikipedia.org/wiki/Crookes_radiometer
I, as a young Quantum Mechanicist, initially thought it demonstrated the Momentum of the Photon.
So Proud of it, that I bought my Sister one for Christmas. Every time the Sun shone on it, it would start spinning!
How wrong I was. Nothing of the sort. It runs on heat. I naturally assumed the interior was a vacuum. Ah, well.
A Crooke's Radiometer?
https://en.wikipedia.org/wiki/Crookes_radiometer
I, as a young Quantum Mechanicist, initially thought it demonstrated the Momentum of the Photon.
So Proud of it, that I bought my Sister one for Christmas. Every time the Sun shone on it, it would start spinning!
How wrong I was. Nothing of the sort. It runs on heat. I naturally assumed the interior was a vacuum. Ah, well.
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I'll repeat my earlier information.
It is Webb's Mid-Infrared Instrument (MIRI) that has been cooled to just a few degrees above absolute zero.
This was achieved with the help of an electrically powered cryocooler:
https://www.jwst.nasa.gov/content/about/innovations/cryocooler.html
MIRI has to be even colder than the other three instruments since it detects longer infrared wavelengths.
Regarding the other three instruments, they work ideally at 37 kelvin.
They can be got that cold in space "passively", simply by virtue of Webb's sunshield.
They can be got that cold in space "passively", simply by virtue of Webb's sunshield.
That's a mildly misleading statement.
The electron's charge itself has not changed over time, but it took some time for physicists to agree on its correct value.
We discussed Millikan's part in this obfustication earlier in the thread.
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