Does Light Amplitude Depend on Frequency?

  • Thread starter Thread starter Joans
  • Start date Start date
  • Tags Tags
    Amplitude Light
AI Thread Summary
The discussion explores the relationship between wave properties such as amplitude, frequency, and energy, particularly in the context of light and water waves. It raises questions about whether light has an amplitude and how it relates to frequency, suggesting that energy may be transferred to wave energy when light is at maximum speed. The conversation highlights that while wave velocity remains constant in a uniform medium, frequency and wavelength can vary. Additionally, it notes that the amplitude squared of light waves corresponds to the number of photons, which changes only upon interaction with matter. Overall, the discussion emphasizes the complexities of wave mechanics and energy transfer in different contexts.
Joans
Messages
22
Reaction score
0
Hey I have several questions about waves and particles.. I believe I mixing it...

Okay firstly we have two stones, One big and one small. First i drop to water one and measure amplitude, freaquency, velocity and energy of a wave. And then another one..
What results I would get, will velocity be the same?
I want to see ant equation of wave energy. I found only that it is proporcianal to amplitude squared...


Does light have an amplitude? How does it depends from freaquency?


And here comes in my imagination:
For example when light goes at c, and freaquency f and we add some energy to it, since it already go at maximum speed so kinetic energy is max, then all energy is transferred to waving energy...
Or supose we have an object with mass m. Then we add some energy to it most of energy goes to kinetic, but not all, i meen not all, according to classical mechanincs... But some to waving energy... Then energy of object: mc2=m0c2+ Ekinetic+Ewaving
I believe that it is wrong, but i really like this idea :)
 
Last edited:
Science news on Phys.org


firstly the waves would move at the same velocity through the water, however the frequency and the wavelength will be different, This is due to the velocity of a wave (think sound) remaining constant within a uniform medium. The relation is velocity = frequency x wavelength

In regards to the equation including wave energy I have no idea. However maybe using the equation Ek = 1/2 mv2 considering particles in the water during a wave undergo an eliptical motion. (velocity for circular motion = 2piRf)

this was in another thread;

The amplitude^2 of lightwaves is equivalent to the number of photons. It doesn't change spontaneously, it changes when it interacts with matter, where each photon either transmits, reflects, scatters, or gets absorbed.
 
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...
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...
Back
Top