berkeman's latest activity
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berkeman replied to the thread Admissions Could anyone offer some advice on my college choice for Physics/Astro?.Welcome to PF. :smile: I'm no help on your questions (you will get plenty of good responses here from other users), but this caught my... -
berkeman reacted to AZeee1781's post in the thread Admissions Could anyone offer some advice on my college choice for Physics/Astro? with
Like.
Hi everyone! So I am a current high school senior (international) who has just finished college applications and received results. I... -
berkeman reacted to BillTre's post in the thread Share Animal Pictures: For Animal Lovers with
Haha.
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berkeman replied to the thread Does memory follow classical or quantum methods?.There is the primacy effect, which describes why we remember the first few items of a list better...
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Two portrait shots taken today of my lovely cat: (Lens: Vivitar 100mm f/2.8)
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berkeman reacted to Astronuc's post in the thread Artemis 2 launch - humans return to the Moon after 54 years with
Informative.
Artemis I was an unmanned test flight to test various systems and regain experience. Artemis II is the first manned flight in 54 years... -
berkeman replied to the thread Undergrad I don't understand Dedekind cuts.Please remember that AI is not allowed as a reference in the technical PF forums. You haven't posted your AI discussion here in this...
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Like the ones who translated "Profesor Escalera" into "Stairmaster"? :).
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berkeman reacted to Baluncore's post in the thread Interpreting VIA PCB characteristics through TDR and TDT with Informative.
Here is a simple TDR simulated in LTspice. Remove the .txt extensions from both files, then run the LTspice file.asc Start by changing...
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berkeman reacted to Baluncore's post in the thread Interpreting VIA PCB characteristics through TDR and TDT with Like.
TDR is a plot of impedance (driver voltage) against reflection time. Z = √( L / C ) You cannot say if it is the inductance or the...
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berkeman replied to the thread A philosopher who challenges the basics and their assumptions.Welcome to PF. Please be sure to read the PF Rules (see INFO at the top of the page). We do not allow personal speculation or...
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berkeman replied to the thread Interpreting VIA PCB characteristics through TDR and TDT.Sorry, I meant to post a different 2nd link: https://en.wikipedia.org/wiki/Telegrapher%27s_equations This equation from that link...
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berkeman replied to the thread Interpreting VIA PCB characteristics through TDR and TDT.BTW, do you want me to fix the "TRT" in your thread title to "TDT"?
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berkeman replied to the thread Interpreting VIA PCB characteristics through TDR and TDT.https://en.wikipedia.org/wiki/Reflection_coefficient https://en.wikipedia.org/wiki/Telegrapher%27s_equations EDIT -- fixed 2nd link.
