Can frequency of light be changed?

  • Thread starter Thread starter aby001234
  • Start date Start date
  • Tags Tags
    Frequency Light
AI Thread Summary
The frequency of light can be changed, specifically through the Doppler effect, where light emitted from a moving source experiences a shift in frequency due to changes in wavelength, while the speed of light remains constant. Energy conservation is a key principle, indicating that energy cannot be created or destroyed, only transformed. Cohesive and adhesive forces could theoretically generate energy if energy is applied to the system, but this would require harnessing potential energy without increasing entropy. Ultimately, attempting to utilize this energy would hinder the system's expansion, leading to the conclusion that it is not feasible. Thus, while frequency changes are possible, generating energy from cohesive and adhesive forces is not practical.
aby001234
Messages
7
Reaction score
0
can cohesive and adhesive forces be used to generate energy?
If yes then how if no then why?
 
Science news on Phys.org
Yes (wavelength changes), the speed, however, remains constant. If say you were traveling in a vessel going c/2 and began emitting a ray of light the light would have it's frequency changed or blue shifted. This is because energy is conserved throughout the universe and since the photon cannot exceed the speed of light, it's wavelength changes, resulting in a higher frequency (Doppler effect).

to Your second question, yes but only if energy is applied to the system. Again, energy is conserved in both its "stored" state (matter) and "active" state (energy, electromagnetic radiation) and can neither be created or destroyed. So if energy was stored as potential kinetic energy in the cohesive and adhesive forces then maybe. but at that attempting to harness this energy would serve to decrease the entropy of the system an therefore halt whatever liquid from spanning more of the universe. so in all entirety no.
 
Last edited:
Thread 'A quartet of epi-illumination methods'

Thread 'A quartet of epi-illumination methods'

Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
View full post »

Thread 'Effective absorption coefficient of gold nanoparticles'

I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
View full post »

Thread 'The focal length of the eye and image inversion'

After my surgery this year, gas remained in my eye for a while. The light air bubbles appeared to sink to the bottom, and I realized that the brain was processing the information to invert the up/down/left/right image transferred to the retina. I have a question about optics and ophthalmology. Does the inversion of the image transferred to the retina depend on the position of the intraocular focal point of the lens of the eye? For example, in people with farsightedness, the focal point is...
View full post »

Similar threads

Do two light waves with difference frequencies connect when they meet?
Replies
5
Views
2K
B What Keeps Photons Traveling Across the Galaxy?
Replies
13
Views
2K
Why Does Light Behave Differently Than Other Electromagnetic Waves?
Replies
4
Views
2K
Why the Frequency of Light Does Not Change Through a Medium
Replies
9
Views
4K
Does speed of light depend on the wavelength or frequency of it?
Replies
2
Views
2K
Frequency of Differently Coloured Light
Replies
4
Views
2K
A Ansys FDTD simulation for phase change due to reflection
Replies
0
Views
2K
Why does the amount of Refraction depend on wavelength?
Replies
1
Views
1K
Rotation of the plane of polarization of light by glucose
Replies
4
Views
2K
Device with which I can measure the frequency of light
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top