Criado por nadine pownall
mais de 8 anos atrás
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What is the unit of frequency ?
Which part of the electromagnetic spectrum transfers the most energy ?
Which have the longer wavelengths , microwaves or radio waves ?
How are radio waves produced ?
What happens to the wavelength if a wave source is moving away from you ?
Which galaxies are moving fastest ?
How does red-shift show that the universe is expanding ?
What is the Big Bang theory ?
What happens to the wavelength of radiation as it changes from gamma to microwaves ?