2. Electromagnetic spectrum: all the wavelenghts of visible and invisible light in order from short (gamma rays) to long (radio).
3.Laser: a device that produces a thin stream of light just a few close wavelenghts.
jueves, 2 de septiembre de 2010
Vocabulary 4 - Invisibgl light
1. Electromagnetic: the production of magnetism by electricity and the production of electricity by magnets.
2. Electromagnetic spectrum: all the wavelenghts of visible and invisible light in order from short (gamma rays) to long (radio).
3.Laser: a device that produces a thin stream of light just a few close wavelenghts.
2. Electromagnetic spectrum: all the wavelenghts of visible and invisible light in order from short (gamma rays) to long (radio).
3.Laser: a device that produces a thin stream of light just a few close wavelenghts.
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