![Electromagnetic spectrum named according to wavelength & energy](http://static.sciencelearn.org.nz/images/images/000/002/000/full/The-electromagnetic-spectrum20160922-23617-zeqpj7.jpg?1674167338)
Parts of the electromagnetic spectrum are named according to wavelength and energy. Radio waves can be over a kilometre, X-rays shorter than a nanometre (a billionth of a metre).
Parts of the electromagnetic spectrum are named according to wavelength and energy. Radio waves can be over a kilometre, X-rays shorter than a nanometre (a billionth of a metre).