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Do not need a medium
- Light is a type of electromagnetic radiation that can be detected by the eye. It travels as a transverse wave. Unlike a sound waves, light waves do not need a medium to pass through, they can travel through a vacuum.
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Jun 8, 2022 · A rock flies through a vacuum just fine. Light, or electromagnetic waves, are just that, waves in the background electromagnetic fields. You could argue that they indeed have a medium, the EM field. This is similar to sound, which is pressure waves in a substance. Light is waves in an EM field.
Unlike a sound waves, light waves do not need a medium to pass through, they can travel through a vacuum. Light from the Sun reaches Earth through the vacuum of space. A short video...
Feb 10, 2021 · Why do some physicists say light can travel through empty space? What a physicist means by this is that there exist non-trivial vacuum solutions to Maxwell's equations. A vacuum solution is one where the sources are zero.
Mar 5, 2020 · Unlike a wave in water or a sound wave in air, light waves don’t need a physical substance to travel through. They can cross empty space because their medium does not involve physical matter. Scientists Say: Wavelength
Apr 24, 2017 · The question of how light travels through space is one of the perennial mysteries of physics. In modern explanations, it is a wave phenomenon that doesn't need a medium through which to propagate. According to quantum theory, it also behaves as a collection of particles under certain circumstances.
Jul 29, 2023 · Water waves require water to travel in. The sound waves we hear, to give another example, are pressure disturbances that require air to travel though. But electromagnetic waves do not require water or air: the fields generate each other and so can move through a vacuum (such as outer space).
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Light and other forms of electromagnetic radiation move through a vacuum with a constant speed, c, of 2.998 × 10 8 m s −1. This radiation shows wavelike behavior, which can be characterized by a frequency, ν, and a wavelength, λ, such that c = λν. Light is an example of a travelling wave.
