However one wavelength will be in incidentray phase

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Unformatted text preview: warf to about a million times that of the sun for the hottest known super-giant star. Astronomers assign stars magnitudes based on how bright they are. Apparent magnitude measures how bright a star appears to be from Earth. Absolute magnitude measures its true luminosity. The brighter the star, the lower its luminosity. Every 5 magnitudes corresponds to brightness changing by a factor of 100. For example, a magnitude 1 star is 10,000 times brighter than a magnitude 11 star. Besides the sun, the brightest star as seen from Earth is Sirius with an apparent magnitude of -1.6. Light Transmission Transparent: Materials, such as window glass, through which light can travel easily and through which other objects can clearly be seen. Translucent: Materials, such as glass blocks, through which light can pass through but no clear image can be seen. Opaque: Materials which absorb and reflect light. Objects cannot be seen through the material. Most objects are opaque. Thin Films & Thin Film Interfe...
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