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1. physics.stackexchange.com › questions › 55109What is light, and how can it travel in a vacuum forever in ...

   physics.stackexchange.com › questions › 55109

   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.

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3. www.bbc.co.uk › bitesize › articlesRay diagrams and transmission of light guide for KS3 physics ...

   www.bbc.co.uk › bitesize › articles

   Unlike sound waves, light waves can travel through a vacuum close vacuum Empty space, where there is no solid, liquid or gas present. – they do not need a substance to travel through.

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5. www.bbc.co.uk › bitesize › articlesLight Waves - BBC Bitesize

   www.bbc.co.uk › bitesize › articles

   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...

6. byjus.com › question-answer › can-light-travel-in-vacuumCan light travel in vacuum? - BYJU'S

   byjus.com › question-answer › can-light-travel-in-vacuum

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   Light from sun reaches earth through the vacuum present in the space. Light does not require any medium to travel. However, Light can also travel in medium like air, water and solids.

7. physics.highpoint.edu › Light › NatureOfLightANature of Light A - High Point University

   physics.highpoint.edu › Light › NatureOfLightA

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   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 .)

8. physics.info › light › summaryThe Nature of Light - Summary – The Physics Hypertextbook

   physics.info › light › summary

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   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".

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   Does light travel through a vacuum?

   • Of course yes. Light from sun reaches earth through the vacuum present in the space. Light does not require any medium to travel. However, Light can also travel in medium like air, water and solids. Example,we can see things inside water and glass which is a liquid and solid, which is due to travel of light. Q.

   Can light travel in vacuum? - BYJU'S

   byjus.com/question-answer/can-light-travel-in-vacuum/

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   Can light travel through a vacuum without a medium?

   • 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 is a vacuum able to propagate light? - Physics Stack Exchange

   physics.stackexchange.com/questions/109982/how-is-a-vacuum-able-to-propagate-light

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   How do light waves travel?

   • 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. Light from the Sun reaches Earth through the vacuum of space. A short video explaining the concept of light waves.

   Light Waves - BBC Bitesize

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   Can light waves propagate through a vacuum?

   • Still the fields are there! Therefore, just as a matter wave (which is nothing but a particle), light waves, i.e. waves in the electromagnetic field, can propagate through such a "perfect vacuum". Vacuum fluctuations or quantum mechanics has nothing to do with it. This is true, even in purely classical electromagnetism.

   How is a vacuum able to propagate light? - Physics Stack Exchange

   physics.stackexchange.com/questions/109982/how-is-a-vacuum-able-to-propagate-light

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   Do particles propagate in vacuum?

   • Particles do propagate in vacuum after all . Without getting into the wild discussion on the intricacies of what may be meant by a perfect vacuum, all waves may be thought of as requiring a medium. 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.

   How is a vacuum able to propagate light? - Physics Stack Exchange

   physics.stackexchange.com/questions/109982/how-is-a-vacuum-able-to-propagate-light

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   How does light travel?

   • Light travels as waves. These are , like ripples in water. The direction of vibration in the waves is at 90° to the direction that the light travels. – they do not need a substance to travel through. materials. Transparent substances, like water and glass, allow light to pass through them.

   Ray diagrams and light transmission - BBC

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10. www.sciencing.com › light-travel-4570255How Does Light Travel? - Sciencing

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    Apr 24, 2017 · Light travels slower in a medium than it does in a vacuum, and the speed is proportional to the density of the medium. This speed variation causes light to bend at the interface of two media — a phenomenon called refraction.