Huygen's principle states that
1.there is a secondary rainbow with the spectral colors reversed from the primary rainbow.
2.light has properties of both waves and particles.
3.all points on a wave front can be taken as point sources of secondary spherical wavelets which construct the new position of the wave front as time passes.
4.rainbows are a result of dispersion.
Question 2A semicircular piece of glass has a beam of light entering the curved surface from air and then striking the flat surface at an angle of incident . What is the critical angle in the glass if the glass has an index of refraction 1.50 or 3/2?
Diversity in the United States
The world attempted to deal with Somalia as if it were a real country but painfully learned that Som
Many thought ideological politics was over in the United States, but 2012 showed strong ideological
Gerhard Richter, 180 Farben (180 Colors).
Typical secondary ignition pattern. Note the lack of firing lines on superimposed pattern.
GDP per Capita in the United States, 1870–2009