berkeman's latest activity
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berkeman reacted to robphy's post in the thread RIP Carl H Brans (1935 - 2026), general relativity with
Care.
https://en.wikipedia.org/wiki/Carl_H._Brans... -
berkeman reacted to Baluncore's post in the thread Extracting capacitance and inductance from s-parameters with
Like.
If you are designing a PCB for operation over a narrowband, then your S-parameters will be for frequencies specified on both the low and... -
berkeman replied to the thread Extracting capacitance and inductance from s-parameters.As explained by @Baluncore in your previous thread, the correct model involves 3 different transmission line impedances in series. Are...
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berkeman replied to the thread Graduate Does a moving particle count as a wave?.Your particles are constrained to have zero size?
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berkeman reacted to Baluncore's post in the thread Appliances Ultrasonic cleaner trouble with
Informative.
The ultrasonic transducer sits between the tank and a counterweight. The counterweight can usually be adjusted to match and work against... -
berkeman reacted to Alex A's post in the thread What Geiger Counter is best for this? with Informative.
When I wanted a Geiger Counter I found that anything even slightly professional, anything calibrated, anything trustworthy and anything...
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berkeman replied to the thread Hi, I'm CosmosSphere.Welcome to PF; it's good to have you here. It's great that you have such strong interests in STEM at a young age. :smile: Please be...
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berkeman reacted to mfb's post in the thread Artemis 2 launch - humans return to the Moon after 54 years with Informative.
NASA stream for reentry (landing in ~1.5 hours) A steeper angle will lead to a higher peak heat load but the heat shield is designed...
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berkeman replied to the thread Graduate How is literally EVERYTHING in physics not binary?.After some cleanup, the thread will remain closed.
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berkeman replied to the thread Graduate How is literally EVERYTHING in physics not binary?.Thread is closed for Moderation.
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berkeman reacted to gmax137's post in the thread Graduate Does a moving particle count as a wave? with
Agree.
@berkeman you beat me to it. An operational definition of "a wave" is, "a phenomenon consistent with the wave equation."
