light absorbtion

  1. madou0016

    Wood/Glass/Metal Help making one way glass

    Hello, i'm wondering if you can inform me about that kind of light which be projected on a glass and it helps us to see it's reflection only for the viewer and not for anyone the other side . all proposals and methods are welcome. even if it is necessary for the light to pass on a chemical...
  2. Irfan Nafi

    Does Beer-Lambert's law calculate the absorbance of a solute

    I'm currently doing a project that involves beer-lambert's law and am confused as to what it actually calculates. So far, my intuition goes as follows: The molar extinction coefficient is for the solvent at a specific concentration and wavelength. In this case, it is blood. And if you have to...
  3. A

    I Does slowing light with a BEC change any of its properties?

    So I understand that scientists have been able to slow light to extremely low speeds using Bose-Einstein Condensates and even without them (https://physics.aps.org/story/v3/st37) and if I understand this correctly they slow light the same way water or air does; atoms absorb the photons and...
  4. P

    Liquid Scintillation Counter w/ fast neutron detectin isotop

    I'm trying to make a LSC with U-238 (non-aqueous form) dipped in the scintillating cocktail to detect fast neutrons (no thermals or epithermals, only fast) from a Cf-252 source. How do I calculate the wavelength emerging from the cocktail (assuming U-238 does not react with the cocktail)? Also...
  5. N

    B Light Viewing

    The other morning it was misting. In the yard the nightlight glowed. Around it the pulsing AC was visible as it appeared to make small rings that moved outward directly, the observers(like an electron as it gets more excited for ex.) We also noticed that the image/rings appeared to be only two...
  6. N

    I In the absorption, and emission spectra, what happens to some

    My name is Nicholas Lee, and I am studying neuroscience, and I am trying to find a way to find better ways in neuroimaging, and microscopy to see the brain better, to find better cure for Parkinson's disease, and Alzheimer's, and epilepsy If you have a four inch cubic block of glass, and carbon...
  7. arthurmani

    Why is diffused light captured through V-shaped grooves?

    Hello, we routed V-shaped grooves in an acrylic panel using a CNC milling machine and placed the panel in front of my window, with no direct light hitting it. The pictures below show two cases, in the top picture, the grooves are facing the window and on the bottom one the grooves are facing...
  8. Eric Diaz

    Force exerted on the palm of your hand by a beam of light

    Compute the force exerted on the palm of you hand by the beam from a 1.0W flashlight. (a) if your hand absorbs the light, and (b) if the light reflects from your hand. What would the mass of the particle that exerts that same force in each case would be if you hold it at earth's surface? On...
  9. Rodwen

    Light absorbtion and change in temperature of liquids

    Hi hi, Sorry if this is awful and boring. Basically what I want to work out is a way to differentiate two different liquids by touch (specifically, temperature) after shining a light on them. A thermometer cannot be used. The variables open here are the compositions of the liquid (I'm going...
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