berkeman's latest activity
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berkeman replied to the thread Collection of Lame Jokes. -
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berkeman reacted to PeroK's post in the thread High School Trivial quantum entanglement question (from a rookie) with
Informative.
You have several misconceptions about entanglement. First, entanglement is often a result of conservation laws and any number of... -
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Say hi to her the next time you hear from her?
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If Evo was still around, she would have closed this thread already lol
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berkeman replied to the thread Whatever happened to Evo?.We hear from @Evo every once in a while in the Mentor forums. Life has gotten busy for her, so she has less time to spend at PF. The...
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berkeman replied to the thread Help with an invention.Welcome to PF, Jeff. Be aware that we do not allow discussion of Perpetual Motion Machines (PMMs) or Over-Unity Mechanisms, which it...
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berkeman reacted to .Scott's post in the thread Do old CRT and O-scopes degrade to emit harmful X Rays? with
Agree.
Don't use any color CRT's before the FDA 1968 Radiation Control Act. Before that time, unintentional and excessive X-ray radiation was... -
berkeman reacted to A.T.'s post in the thread Undergrad Exploring the possibilities of storing electricity from lightning with
Like.
It's more like trying to capture the energy from the sound that wind sometimes makes, instead of just building a wind turbine. It's a... -
berkeman replied to the thread Great one-liners from PF members.I liked your reference to multiple levels, including the land of the rising sun. Reminds me of wonderful pictures of creeks that show...
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berkeman reacted to symbolipoint's post in the thread Some Parents take their kiddo to the beach while others take their kitty to the beach with Like.
This one I found is too good to not share here on Physicsforums; I am not sure where to place it and not sure just what to title it...
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berkeman replied to the thread Undergrad Exploring the possibilities of storing electricity from lightning.Maybe, but as illustrated by the reply by @phyzguy above, in order to be practical, there would need to be a way to harvest the energy...
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berkeman reacted to phyzguy's post in the thread Undergrad Exploring the possibilities of storing electricity from lightning with Like.
One way to look at it is that the energy in a lightning bolt is about 1GJoule or 1,000,000 1,000,000,000 Joules. This is equal to about...
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berkeman reacted to Baluncore's post in the thread 12 year old seeking feedback on multi-element blade alloy with Like.
You learn quickly, which is good because you have a huge and fascinating subject out in front of you, and the Sun is about to rise.
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Said in reply to a 12 year old looking into Japanese metallurgy. I hope it's original @Baluncore but even if not, it's a great turn of...
