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  1. What is the difference between reflectivity and reflectance?

    Aug 2, 2023 · This question is in the context of solar reflections in buildings that cause glare. The two terms are similar but they have differences.

  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 …

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

    Aug 26, 2018 · Why do metals have high optical reflectivity? Ask Question Asked 7 years, 3 months ago Modified 6 years, 7 months ago

  4. Reflectivity with complex refraction indices - Physics Stack Exchange

    Mar 24, 2017 · Reflectivity with complex refraction indices Ask Question Asked 8 years, 8 months ago Modified 5 years, 2 months ago

  5. electromagnetic radiation - The rule breaker, emissivity

    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 …

  6. everyday life - How reflective is the aluminum foil used for food ...

    Sep 25, 2020 · Household aluminum foil reflectivity measurements Science Direct article Pulling a diagram from that article: The reflectivity of household aluminum foil is quite good, but …

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

    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 …

    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 …

  9. optics - Do mirrors reflect all wavelengths of the electromagnetic ...

    Sep 2, 2016 · Similarly, if you look at metals like silver, you'll find great reflectivity across the visible spectrum and decent reflectivity across the IR range, but at high frequency ranges, the …

  10. Why does the polarization type ($s$ or $p$) of electromagnetic …

    Aug 26, 2020 · So the Fresnel equations can describe the reflectivity and transmission of $s$ and $p$ polarized light and show that there is a different relationship between angle of incidence …