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All of these waves form part of the electromagnetic spectrum. Classically, electromagnetic radiation consists of electromagnetic ... such as the transition of electrons to lower energy levels in an ...

Although you might not think of them in this way, you are in possession of two extraordinary antennas, perfectly tuned to receive a narrow band of electromagnetic radiation. These antennas are not ...

Electromagnetic radiation is carried by photons, massless particles that travel at the speed of light (300,000 kilometers per second in a vacuum). Every photon ... and by the energy it carries ...

In the yellow region of the electromagnetic spectrum ... a quantized lattice vibration — and so the emitted photon will be lower in energy. This can be viewed as a three-state 'Λ atom ...