Sentences with phrase «light at a particular frequency»

Yet so far, star formation historians have mostly relied on other indicators to write their histories: light at a particular frequency that is typically emitted when giant clouds collapse, heating up in the process and radiating away that heat in the form of specific spectral lines.

Not exact matches

«An atom sitting at rest will absorb light of a particular frequency or colour — if it is moving towards you or away from you then the absorbed light is very slightly changed because of something called the Doppler effect,» says Professor Luiten.

So the selective absorption of light by a particular material occurs because the selected frequency of the light wave matches the frequency at which electrons in the atoms of that material vibrate.