Light is an example of electromagnetic radiation.
EM radiation unlike other waves of energy doesn't need a medium to travel through hence why light energy can travel from the sun to the earth through the vacuum of space.
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An example of electromagnetic radiation is visible light, which is the part of the electromagnetic spectrum that we can perceive with our eyes. Other examples include radio waves, microwaves, infrared radiation, ultraviolet radiation, X-rays, and gamma rays.
The discovery itself is an example of the value of the scientific method, and has nothing to do with any aspect of electromagnetic radiation. But the confirmed existence of photons is an explanation of the particle behavior of that radiation.
Yes, electromagnetic radiation includes infrared radiation, which has longer wavelengths than visible light. Infrared radiation is not visible to the human eye but can be felt as heat. It is part of the electromagnetic spectrum, which encompasses all forms of electromagnetic radiation.
The intensity of any electromagnetic radiation is inversely proportional to the square of the distance of the emitter of that radiation.
Visible light is an example of electromagnetic energy or radiated energy.
Alpha radiation is not electromagnetic. It's a stream of helium nuclei.