berkeman's latest activity
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berkeman reacted to confusedlabs's post in the thread High School A question about leverage and stability of shelf support with
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Thank you everyone. -
berkeman replied to the thread My glasses are giving me a neck cramp.Time to invest in a dedicated pair of single-focus computer work glasses. Your health is worth it. :smile: -
berkeman reacted to gleem's post in the thread Do old CRT and O-scopes degrade to emit harmful X Rays? with
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There is no abrupt cutoff of bremstralung production. X-rays below 20 kVp called Grenz Rays, have been used for decades for the... -
berkeman replied to the thread Retired Engineer Investigating Plasma‑Based Optical Phase Control.Welcome to PF, Ronald. It's good to have you here. :smile: -
berkeman reacted to rcc01's post in the thread Retired Engineer Investigating Plasma‑Based Optical Phase Control with
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? Hello everyone,My name is Ronald Coleman, and I’m a retired engineer and inventor based in Temescal Valley, California. I spent many... -
berkeman replied to the thread Collection of Lame Jokes. -
berkeman reacted to mathwonk's post in the thread Job Skills Physics Careers: Expectations vs. Reality with
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@Surf_and_Sky: Have you talked to anyone at the U (in Salt Lake)? That is a very dynamic place, with lots of very bright people... -
berkeman reacted to Albertgauss's post in the thread Do old CRT and O-scopes degrade to emit harmful X Rays? with
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Good points to 256Bits. I did not realize that implosion was a possibility. Tiny shards of glad; yes, that would be a brutal problem... -
berkeman replied to the thread High School A question about leverage and stability of shelf support.From looking at typical shelf support pins, it looks like the supporting part (usually flat) extends out about the same amount as the... -
berkeman reacted to Ibix's post in the thread Graduate Does a moving particle count as a wave? with
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A classical particle won't diffract when passing through a slit. In particular, it will not pass through a slit that is narrower than... -
berkeman replied to the thread Hey it’s confusedlabs.Welcome to PF; you've come to the right place. :smile:

