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 Boy, a Girl and a Bike A Boy, a Girl and a Bike A Boy, a Girl and a Bike is a 1949 British romantic comedy film directed by Ralph Smart and starring John McCallum, Honor Blackman and Patrick Holt. The film's art direction was by George Provis. The film concerns the romantic escapades and adventures of a Yorkshire cycling club. Young couple Sue (Honor Blackman) and Sam (Patrick Holt) are members of a Yorkshire cycling club, the ‘Wakeford Wheelers’. Romantic complications ensue when wealthy David (John McCallum) becomes smitten with Sue, and joins the club to pursue her, much to Sam's dismay. The "Radio Times"