berkeman's latest activity
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berkeman replied to the thread Undergrad Our Mathematical Universe book -- Since when does light contain voltage?.Another way that EM radiation is used to influence electrons is in the Free Electron Laser... -
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berkeman replied to the thread Undergrad Our Mathematical Universe book -- Since when does light contain voltage?.Not so much "travel on", more like "are influenced by". For the electrons in the metal of an antenna, the EM wave that passes the...
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berkeman replied to the thread Undergrad Sound waves on the Sun.So for sine waves to build while cycling around something, they need to be in-phase. A sine wave is 360 degrees total in length, or...
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berkeman replied to the thread Undergrad Sound waves on the Sun.What part of ##N * 2\pi## do you not understand?
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berkeman replied to the thread How does my refrigerator with no refrigerant work?.Can you give details on the exact product you are referring to? Thanks.
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berkeman replied to the thread Undergrad Our Mathematical Universe book -- Since when does light contain voltage?.Light waves have E and B components. The oscillating E-field component is what accelerates electrons in antennas and other metal...
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berkeman reacted to Ibix's post in the thread Undergrad Our Mathematical Universe book -- Since when does light contain voltage? with
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Yes, in principle you can use the electric component of light to push a current on a circuit. Light oscillates too fast for us to do... -
berkeman reacted to sbrothy's post in the thread What do computer science engineers do? with
Informative.
As I'm somewhat of a dinosaur the advent of AI makes the whole field almost impossible to guess about for me. Vibe-coding... -
See pages 1 and 2 of "201 Minutes of a Space Idiocy", my all-time favorite MAD magazine parody. The soundtrack was one of the first...
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Who would have thought, that more than one member could be mesmerised by pricing alone, into providing such good advertising on this...
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berkeman reacted to Demystifier's post in the thread Undergrad Why is gravity a fictitious force? with Informative.
There is an interesting similarity with magnetic force. The magnetic force on a point charge is orthogonal to its 3-velocity, so it does...
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I took this photo about two weeks ago. A pair of mallard ducks had been swimming around in front of my house. Then I started seeing...
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Have you search on the best compressors for png? I found a lossless copressor that seems to lead the pack for compression: OxiPNG...
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berkeman reacted to rajava007's post in the thread Automotive Continuously Variable Transmission Idea with Like.
Thank you everyone for helping me with this question. It originally started with the fantasy of discovering a new CVT concept, however...
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Thank you so much! Sorry about that.
