berkeman's latest activity
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berkeman replied to the thread Collection of Lame Jokes. -
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berkeman reacted to Orodruin's post in the thread B Matter density right after the decoupling with
Informative.
Free-streaming means that the (average) density of matter is so small that the mean-free path exceeds the size of the Universe. The... -
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berkeman replied to the thread Share Animal Pictures: For Animal Lovers.
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berkeman replied to the thread Just an enthusiast!.Welcome to PF; it's good to have you here. :smile:
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Hello fellow Physics enthusiasts, I am an aeronautical engineering graduate (Bachelor's) who is interested in Physics and Mathematics...
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berkeman reacted to AlexB23's post in the thread Does anyone own a Wimshurst or Electrostatic machine? with
Like.
Plasma globes are pretty cool. I have touched one before, and the electricity can be a little freaky to see under the glass. -
Strong lightning strike destroys New Zealand radar...
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Some more autumn photos, if I may (shot two days ago)... Chinese lantern (Alkekengi officinarum): A backlit autumn leaf: Colorful...
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berkeman replied to the thread Collection of Science Jokes P2.
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berkeman reacted to bluepilotg-2_07's post in the thread Please tell me where I am going wrong in this integral with Like.
Hello, thank you for the response! I should have known better, but wasn't considering even and oddness. I realize now that the first...
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berkeman replied to the thread Physicist, philosopher, violinist, poet and theories maker.It looks like you ignored my friendly reminder above. Please check your DMs; this intro thread is closed.
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berkeman replied to the thread Physicist, philosopher, violinist, poet and theories maker.Welcome to PF. We welcome questions about mainstream science, but please understand that we do not allow proposing new theories here...
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berkeman replied to the thread The Chinese early experiments in Rocketry -- Do we owe them?.Thread will remain closed. The original question was a bit off, and the discussion that it spawned was also a bit off. The initial...
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berkeman reacted to DaveC426913's post in the thread A three month long summer vacation from public school seems stupid with Like.
And this happens magically? As someone who works as support staff in education, I can tell you that the work put in at graduation and...
