Applications of GMR GMR sensors find a wide range of applications: Fast and accurate position and motion sensing of mechanical components in precision engineering and robotics. Missile Guidance Position and motion sensing in computer video games. Key Hole Surgery and post operative care.
Ultraviolet Light Ultraviolet (UV) light is light with higher frequency (lower wavelength) than visible light. UV light has frequencies ranging from 8*10 14 to 3*10 16 Hz (800 THz to 30 PHz) and wavelengths from 10 -8 m to 3.8*10 -7 m (10 nm to 380 nm).
  Red is the longest visible wavelength, and violet is the shortest.   There are other wavelengths of 'light' that are longer than red or   shorter than violet, but they're not 'visible' just because the  stuff in the   back of your eye doesn't respond to them even when they shine on  it.   The shortest visible wavelength is around 400 nano (billionth of a)  meters. There are other wavelengths of 'light' that are longer than red or   shorter than violet, but they're not 'visible' just because the  stuff in the   back of your eye doesn't respond to them even when they shine on  it.    The shortest visible wavelength is around 400 nano (billionth of a)  meters.