The ratio of this quantity for light in two different media is the reciprocal of the ratio of the media's indices of refraction.
This quantity is inversely proportional to temperature by Wien's Law. The ratio of this quantity for light in two different media is the reciprocal of the ratio of the media's indices of refraction. Planck's constant divided by the product of mass and velocity is sometimes known as the "de Broglie" one. It is lower for ultraviolet light than visible light and higher for infrared, and is typically denoted with the Greek letter lambda. For 10 points, name this quantity, equal to the velocity divided by frequency, the distance between two peaks of a periodic wave.
This quantity is inversely proportional to temperature by Wien's Law.
{wavelength} [accept {lambda} before it is read]