Electromagnetic radiation — these interactions include the Faraday effect and the Kerr effect. In refraction, a wave crossing from one medium to another of different density alters its speed and direction upon entering the new medium. The ratio of the refractive indices of the media determines the degree of refraction, and is summarized by Snell's law. Light of composite wavelengths (natural sunlight) disperses into a visible spectrum passing through a prism, because of the wavelength-dependent refractive index of the prism material (dispersion); that is, each component wave within the composite light is bent a different amount. EM radiation exhibits both wave properties
A Sound Like Someone Trying Not to Make a Sound A Sound Like Someone Trying Not to Make a Sound A Sound Like Someone Trying Not to Make a Sound (Doubleday Books for Young Readers, September 28, 2004, ) is a children's picture book written by John Irving and illustrated by Tatjana Hauptmann. The title was originally used for a children's book written by a fictional character (Ted Cole) in Irving's 1998 novel "A Widow for One Year". The story takes place in a house, late at night. A young child, asleep in his bed, awakes to hear a sound he describes as "a sound like someone trying not to