Tagged Questions
2
votes
3answers
133 views
If photons can be absorbed by electrons, wouldn't that mean light has a charge? [duplicate]
I am a biochemistry and molecular biology major. If photons can be absorbed by electrons, wouldn't that mean light has a charge? Electrons only attract positive charges. Isn't it?
0
votes
0answers
65 views
What about the photons that make you see ? [duplicate]
Possible Duplicate:
What determines color — wavelength or frequency?
Explanation about black color, and hence color
I understand that what we see are the reflected light from other ...
0
votes
1answer
94 views
Exist some relationship between irradiance units and wavelenght of the incident sunlight?
Exist some relationship between irradiance units and wavelength of the incident sunlight?
What about irradiance? I want to establish a relationship between wavelength and irradiance, because I would ...
9
votes
2answers
601 views
Does a photon exert a gravitational pull?
I know a photon has zero rest mass, but it does have plenty of energy. Since energy and mass are equivalent does this mean that a photon (or more practically, a light beam) exerts a gravitational pull ...
3
votes
3answers
781 views
Conservation of energy and Doppler effect?
From what I understand, the frequency of light coming from the source moving towards an observer increases. From $ E=hv $ , this implies increase in energy of photon.
What really is confusing, is ...
2
votes
2answers
792 views
Wave / particle duality question for sound and light
Sound is usually referred to as just "sound waves" - we do not talk about a "sound particle" and only as a wave or "matter wave."
Could something similar apply to light i.e. that there really is no ...
