Saturday, August 21, 2010

Vocabulary 2


Electromagnetism:The production of magnetism by elctricity and the production of electricity and the production of electricity by  magnets.




Electromagnetic Spectrum:All the wavelengths of visible and invisible light in order from short (gamma rays) to long (radio).  
Laser:A device that produces a thin stream light of just a few close wavelengths.
                              

No comments:

Post a Comment