QuarkyMeson's latest activity
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QuarkyMeson replied to the thread Undergrad Some confusion with the Binding Energy graph of atoms.Because you're fusing elements after the peak in binding energy your Q will be negative. You need to make up that budget with energy... -
QuarkyMeson replied to the thread Undergrad Some confusion with the Binding Energy graph of atoms.It doesn't get released, it was there all along generally as kinetic energy. No, again, the graph only includes binding energy Q...
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QuarkyMeson replied to the thread Undergrad Some confusion with the Binding Energy graph of atoms.The energy released is simply the difference in masses between the products and reactants. ##Q = (m_1+m_2 - \sum M_{products})c^2##...
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QuarkyMeson reacted to Paul Colby's post in the thread Graduate Project Progress Report and possible Radio Astronomy Technique? with
Like.
This is a good question. I’ve done some experimenting separating the radios and shortening the cables from the clock generator. I’ve... -
QuarkyMeson replied to the thread Undergrad Some confusion with the Binding Energy graph of atoms.The graph represents what is on the axes- mass number against the average binding energy per nucleon. The average binding energy per...
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QuarkyMeson replied to the thread Graduate Project Progress Report and possible Radio Astronomy Technique?.The units aren't correct. You're getting ##\frac{V^2}{Hz}##, which I think would be the noise voltage spectral density across the load...
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QuarkyMeson reacted to Choppy's post in the thread Admissions PSA -- Contact PI's before applying to graduate school in the US with Like.
For what it's worth, I think there are a lot of specific details that could come into play. These would include having to make a...
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QuarkyMeson replied to the thread Admissions PSA -- Contact PI's before applying to graduate school in the US.https://www.statnews.com/2025/02/19/trump-funding-freeze-grad-student-postdoc-acceptances-paused-nih-research/ This is from last year...
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QuarkyMeson replied to the thread Graduate Project Progress Report and possible Radio Astronomy Technique?.So basically a radio interferometer? That's pretty neat, I've always wanted to do something like this. So even when you stopped...
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QuarkyMeson replied to the thread Admissions PSA -- Contact PI's before applying to graduate school in the US.The largest department I reached out to was MIT, and I haven’t heard back yet, which isn’t surprising. At this point in the year...
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QuarkyMeson reacted to gwnorth's post in the thread Admissions PSA -- Contact PI's before applying to graduate school in the US with
Agree.
That seems rather unethical on the part of the universities to me. -
QuarkyMeson replied to the thread Admissions PSA -- Contact PI's before applying to graduate school in the US.That's definitely fair and it's probably a good practice anyway. I just wanted to warn others that we live in strange times at the...
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QuarkyMeson posted the thread Admissions PSA -- Contact PI's before applying to graduate school in the US in STEM Academic Advising.Given the current funding situation, you should contact potential departments or research groups before you apply and pay any...
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QuarkyMeson reacted to Dale's post in the thread Undergrad Coulomb gauge implies instantaneous radial electric field? with Like.
This is shown in Jackson's 2002 paper "From Lorenz to Coulomb and other explicit gauge transformations" (Am J Phys, 35:832-837)...
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QuarkyMeson reacted to Dale's post in the thread Undergrad Coulomb gauge implies instantaneous radial electric field? with Like.
As was pointed out by @QuarkyMeson, no, because it is only part of the field. However, Maxwell’s equations admit causality-reversed...