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Charles Link's latest activity
Charles Link
reacted to
symbolipoint's post
in the thread
Motivating high school Physics students with Popcorn Physics
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My solution, still a typical way to solve: my solution: combined constant rates, eating bag of popcorn
Apr 2, 2024
Charles Link
reacted to
Swamp Thing's post
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I
What Causes the Einstein - de Haas Effect in Iron Rods?
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As I said in my original question... ... it seems to me that when one subsystem changes the direction of its angular momentum, and...
Mar 31, 2024
Charles Link
reacted to
Swamp Thing's post
in the thread
I
What Causes the Einstein - de Haas Effect in Iron Rods?
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This video goes into the details of what is going on when an electron in a lattice flips its spin direction under an external field. A...
Mar 31, 2024
Charles Link
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sbrothy's post
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Why Does Snow Pack Better Near the Melting Point?
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Always nice to see grownups having/taking the time to goof around in the snow. :) You think there's some psychology at play here...
Mar 24, 2024
Charles Link
replied to the thread
Why Does Snow Pack Better Near the Melting Point?
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The above is a photo of the 2'7" snowman I made Friday, 3-22-24. @DennisN This photo was taken just after I built the snowman. You...
Mar 24, 2024
Charles Link
replied to the thread
Why Does Snow Pack Better Near the Melting Point?
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Mar 24, 2024
Charles Link
reacted to
DennisN's post
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Why Does Snow Pack Better Near the Melting Point?
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I can see that. It seems you used up all the available snow. :smile:
Mar 23, 2024
Charles Link
replied to the thread
Why Does Snow Pack Better Near the Melting Point?
.
The above is a photo of a 2'7" snowman that I made Friday 3-22-24. Packing conditions were good, but I had very little snow to work...
Mar 23, 2024
Charles Link
replied to the thread
Why Does Snow Pack Better Near the Melting Point?
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Mar 23, 2024
Charles Link
reacted to
Swamp Thing's post
in the thread
I
What Causes the Einstein - de Haas Effect in Iron Rods?
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See slides 3 and 22 in this presentation: https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32601 In slide 3 they ask the...
Mar 23, 2024
Charles Link
reacted to
pines-demon's post
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I
What Causes the Einstein - de Haas Effect in Iron Rods?
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Also again, if you have an AC field, and you tune to resonance, you can amplify the effect.
Mar 22, 2024
Charles Link
replied to the thread
I
What Causes the Einstein - de Haas Effect in Iron Rods?
.
With the lighter mass, with less material, that would also make for a higher rate of rotation. :)
Mar 22, 2024
Charles Link
reacted to
pines-demon's post
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I
What Causes the Einstein - de Haas Effect in Iron Rods?
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According to the paper (link above), they had a 48,8 times amplification. Which lead to a ##\omega\approx 6\times10^{-3}\,##rad/s (?)...
Mar 22, 2024
Charles Link
reacted to
Swamp Thing's post
in the thread
I
What Causes the Einstein - de Haas Effect in Iron Rods?
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Informative
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Yes, they had to really struggle to get their final result, building three versions in the process. They used some high-Q torsional...
Mar 22, 2024
Charles Link
replied to the thread
I
What Causes the Einstein - de Haas Effect in Iron Rods?
.
The change in angular momentum I think is very small, even if you get every electron to go to the other spin state. Let's try to...
Mar 22, 2024
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