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HNQ
12:33 AM
1
Q: What examples are there of unrelated physical quantities measured in the same units?

John BentinTorque and energy have the same dimensionality, and so logically are measured in the same units (joules). However, it seems more natural to call the unit for the former a “newton-metre”, because torque does not feel like a form of energy, even though this elaborately described unit means no more ...

 
 
17 hours later…
HNQ
5:12 PM
1
Q: What are the points in spherical coordinates?

SimoBartzLet's use the spherical coordinates so that $\vec P=(r, \theta, \phi)$. In this context i've read that it's possible to write $$\vec P'=\vec P + d\theta\ \vec e_\theta+d\phi\ \vec e_\phi+dr\ \vec e_r$$ but i don't understand the meaning of this since it looks like $$(r', \theta', \phi')=(r, \thet...

 
 
3 hours later…
HNQ
8:15 PM
3
Q: What is a scalar particle?

samira aslaniI was studying particle physics and I saw the word "scalar particle" many times, also in books. On the internet there wasn't any thing about it. So can anyone say what is a scalar particle ?

 

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