lunes, 20 de septiembre de 2010

the tools of astronomers

universe:everything that exist














telescope:a divice that collects light and make distands object apear closser and larger


refraction. the bending of waves as they go from one substance to another


reflection:the bouncing of waves off a surface




wavelength:the distance from one peak to the next on a wave


frequency:the number of waves that pass throught a point in a second



electromagnetic spectrum:waves of light in order by wave lenght





No hay comentarios:

Publicar un comentario