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- 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.
www.bbc.co.uk/bitesize/articles/ztmsp4j
May 2, 2014 · Light may seem to be an exception, leading many to say that light is a wave that can travel through a vacuum with no medium. Light doesn't use EM fields as its medium; light IS an EM (electromagnetic) wave.
How can light (or electromagnetic radiation) travel through a vacuum when there is nothing there to act as a medium, and do so forever in all directions? For example the light coming from a star millions of light years away.
Jan 5, 2015 · Electromagnetic waves are only an observed phenomenon. There is no travel. As an example we can choose a photon which is "traveling" from Sun to Earth (for simplicity we do not care about gravity issues here). That means that Sun is emitting a bit of energy (a momentum) which is received by Earth.
May 24, 2024 · But we also know that we can see light from the sun, moon, and stars, which means that light waves can travel through the vacuum of space. Unlike every other wave we have seen, it doesn't require any medium at all!
Unlike sound, light can travel through a vacuum — it doesn't need a medium.It can travel through transparent materials such as glass, water, and air. (A material light can't travel through is said to be opaque .)
Like all electromagnetic waves, light can travel through a vacuum. The transverse nature of light can be demonstrated through polarization. Light is sometimes also known as visible light to contrast it from "ultraviolet light" and "infrared light".
Aug 27, 2024 · Waves in a Vacuum: Only specific waves, such as electromagnetic waves and gravitational waves, can travel through a vacuum, while mechanical waves, like sound, require a medium. Types of Waves: Electromagnetic waves include light, radio, and X-rays, traveling at the speed of light (~299,792 km/s).
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