berkeman's latest activity
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berkeman replied to the thread I Question about "A Group Epimorphism is Surjective".After a Mentor discussion this thread will remain closed. @elias001 -- please reread the PF rules, particularly the part about not... -
berkeman reacted to Drakkith's post in the thread Lawn/Garden Determining Ramp Length for Ground Clearance with
Like.
Thanks all! -
berkeman replied to the thread A Why do both poles of a radio pulsar emit radio waves?.Thread is closed temporarily for Moderation...
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berkeman reacted to Janus's post in the thread A Why do both poles of a radio pulsar emit radio waves? with Like.
Pulsars "pulse" because their magnetic poles and rotational axis don't align. The radiation emitted from the magnetic poles is...
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berkeman replied to the thread A New Member Jurica.Welcome to PF; it's good to have you here. :smile:
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I am glad to be here. I was a physics student long time ago and didn't touch science and physics for 30 years. Now I am back to physics...
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berkeman reacted to fresh_42's post in the thread How do people explore new ideas in physics? with Like.
I just explained in a DM how math proofs must be read. I think it is a nice, though very simple example of why it is a big deal to...
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berkeman replied to the thread Lawn/Garden Determining Ramp Length for Ground Clearance.In case you decide to make it/them on your own, I'll share my old design. I built a very strong motorcycle ramp (strong enough for...
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berkeman reacted to Baluncore's post in the thread Lawn/Garden Determining Ramp Length for Ground Clearance with
Informative.
That 15° is not relevant to climbing or descending a straight ramp, it is the angle of slope over which the caster-lead of the steering... -
berkeman replied to the thread Lawn/Garden Determining Ramp Length for Ground Clearance.What kind of ramps have you been looking at so far? What will be the combined weight of the mower and yourself when you are driving it...
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berkeman reacted to Dale's post in the thread I Can this experiment break Lorentz symmetry? with Like.
This kind of setup is already done all the time. What you describe is any particle accelerator that uses counter-rotating beams. If the...
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berkeman reacted to AlexB23's post in the thread Site Usability nitpick -- Hyperlinks should be underlined with Like.
Haha, true. Thank you for keeping our site running smoothly. Hey, that is the beauty of life. We all have different opinions. I respect...
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berkeman replied to the thread Site Usability nitpick -- Hyperlinks should be underlined.Most likely the helpful Mentors would notice and reset the font color to default. (And they would maybe send a friendly DM asking the...
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berkeman reacted to TensorCalculus's post in the thread Asaad Hamad, Independent researcher with Like.
:welcome: You mentioned you’re an independent researcher. It might be a good idea to read the forum guidelines on posting independent...
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In the song, yes, but not the picture.
