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?
Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an
Many different colors of fluorescent proteins are now available
Gestalt Principle: Closure
Gypsy moths native to Europe and Asia feed on oaks through much of the United States.
Nutrias native to South America are abundant in freshwater marshes of the Gulf States. Their populat