Recent content by Djinn
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Undergrad Why do both Coulomb and Gravity follow 1/r^2 laws?
Thanks, DH. My first followup would be: why does 3D space imply 1/r^2? But I am going to take a guess from your answer about W and Z Bosons: 3D space implies 1/r^2 laws is because the idea is that the interactions are mediated by force carriers, and the number of force carriers that smacks...- Djinn
- Post #3
- Forum: Electromagnetism
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Undergrad Why do both Coulomb and Gravity follow 1/r^2 laws?
I am wondering why both Coulomb and Classical Gravity follow 1/r^2 laws. Weak and Nuclear force fall off at much faster distance scales! Does anyone know why it is that both Coulomb and Gravity have 1/r^2 strength, while the other forces have different distance scales?- Djinn
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- Coulomb Gravity Laws
- Replies: 8
- Forum: Electromagnetism
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Graduate Help with Navier-Stokes Equation: Symbols & Meaning
You are correct that the equations describe fluid motion. I have a beautiful proof that solutions always exist in three dimensions, but unfortunately it is too big for this marginal comment. -
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Graduate Coulomb's Law at Very Short Distance Scales
I read in the Feynman Lectures, section 5-8 in Volume 2, that Coulomb's law may begin to break down at distance scales shorter than 10^-14 cm. Feynman says that, at the time of his lecture, the question was still open. Does anyone have any new information on this question? Thanks, Djinn- Djinn
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- Coulomb's law Law Short
- Replies: 3
- Forum: Electromagnetism
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Jackson's Text is not my Friend-Any E+M Text Recommendations?
Thanks to all for their recommendations, and to whoever moved the thread to the right place. I looked for a section like this, but I'm new here and I didn't find it. :^)- Djinn
- Post #6
- Forum: Science and Math Textbooks
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Jackson's Text is not my Friend-Any E+M Text Recommendations?
Jackson's Text is not my Friend--Any E+M Text Recommendations? Hello Everyone, I am a first year PhD student taking E+M. We are using, as many students do, the dear text by John David Djingleheimer Jackson. He seems like a pretty righteous dude, but I'm not feeling the textbook. Does anyone...- Djinn
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- Text
- Replies: 17
- Forum: Science and Math Textbooks