5 votes
Accepted

Why is red the brightest in the emission spectra of Hydrogen Gas?

Brightness does not correspond to the energy, it corresponds to the transition that happens most often (producing the most photons). Which will often be the ones at lowest energy levels. In fact as ...
RC_23's user avatar
  • 8,910
3 votes
Accepted

Should natural frequency be modeled using molecules?

Normally, when we talk about molecules in a solid vibrating, we mean that the vibrating molecule is moving back and forth with respect to the lattice/its surrounding molecules. The amplitude of this ...
David_h's user avatar
  • 72
2 votes

Does infrared radiation emitted by an object happen only from its surface, or is emission also from the centre of the object?

If you are analyzing an object that is opaque to infrared radiation (as most are), then any infrared radiation that is created inside would quickly run into a different part of the object and be ...
BowlOfRed's user avatar
  • 39.8k
1 vote

What is the meaning of screened potential?

why do we need another potential besides the Coulomb one that includes the interaction between every particle in the system? The problem is that we can not solve the problem if we include all the ...
hft's user avatar
  • 18.9k
1 vote

What is current density and is it a material property?

No, current density is not a property of the medium. It's not a property of the medium itself, but it can be related to some property of the medium, like resistivity $\sigma$, and to other ...
basics's user avatar
  • 8,176

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