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  1. What is the difference between reflectivity and reflectance?

    Aug 2, 2023 · Reflectivity is the square of the magnitude of the ratio of the reflected electric field to the incident electric field at a surface boundary. Reflectance is the ratio of the total reflected power to the …

  2. Why is there emissivity + reflectivity + transmittance = 1?

    Aug 29, 2017 · Reflectivity, Absorptivity, and Transmissivity are defined as being fractions of the original incident light. So you could have 30% reflected, 10% absorbed, and then you would know 60% was …

  3. Why do metals have high optical reflectivity? - Physics Stack Exchange

    Aug 26, 2018 · Why do metals have high optical reflectivity? Ask Question Asked 7 years, 5 months ago Modified 6 years, 9 months ago

  4. Refractive Index and Reflection - Physics Stack Exchange

    Aug 14, 2017 · Does the magnitude of the refractive index affect reflection? Will a ray be more reflected the higher the refractive index of the other medium is?

  5. Reflectivity with complex refraction indices - Physics Stack Exchange

    Mar 24, 2017 · Reflectivity with complex refraction indices Ask Question Asked 8 years, 11 months ago Modified 5 years, 4 months ago

  6. electromagnetic radiation - The rule breaker, emissivity + reflectivity ...

    Apr 3, 2013 · If emissivity and reflectivity are inversely proportionate, why does glass have a high emissivity of around 0.95-0.97 as well as being very reflective for IR Radiation? normally it works but …

  7. optics - Why does light reflect more intensely when it hits a surface ...

    Above Brewster's angle this suppression becomes weaker again and the reflectivity grows quickly and reaches the same value as for the s-polarization at 90° incident angle.

  8. Why did high quality mirrors use aluminum coatings instead of silver?

    Jun 3, 2014 · The reason for going with silver rather than aluminium is a slightly improved reflectivity in the near- and mid-infrared (99.1 per cent at 10 microns), but also that the emissivity of the silver …

  9. Reflectivity of a glowing-hot metal surface - Physics Stack Exchange

    When a polished piece of metal (or steel in particular) is heated to incandescence, how do its reflective properties change? Given a mirror-like surface, would the object temporarily cease to act ...

  10. Why texture of an object depends on the amount of light it reflects?

    Jun 13, 2019 · Several things affect the visibility of texture, including specular reflection, and relative brightness. The texture of a surface painted glossy black is easy to see because it reflects light …