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Because the speed of light is always constant; it doesn't change based on the movement of the source or detector or the direction in which it travels.

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Katie

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5y ago

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Who can we say light does not need to travel in medium?

Light can travel in a vacuum without the need for a medium. This is because light is composed of photons which do not require a medium, unlike other types of waves such as sound waves that do need a medium to propagate.


What does light not need in order to travel?

It does not need a medium.


What does light need in order to travel?

It does not need a medium.


Does light need a medium through which to travel?

Light can travel through a vacuum, which means it does not require a medium to propagate. This is explained by the wave-particle duality of light. While light behaves as a wave and doesn't need a medium, it can also be understood as a stream of particles called photons.


How does light travel through AVACUUM?

Light waves do not need a medium to propagate. Sound waves cannot travel without a medium. Light waves always travel at the speed of light that is 3*108m/s.


All waves need a medium in order to travel?

light waves do not need a medium. Electromagnetic Waves (EM) do not need a medium. For example visible light, radio waves, microwaves, UV light and x-rays do not. These travel @ 300 million meters/sec in a vacuum.


Can light travel through space?

Yes, light can travel through space because it does not need a medium to propagate.


When a wave travel through a medium?

Mechanical waves such as sound and vibration require a medium in which to travel. Electromagnetic waves such as radio and light need no transmission medium.


Is medium required to transmit light waves?

No. light waves required no medium for transmission.


What waves need a medium to travel in?

Mechanical waves, such as sound waves, require a medium to travel through. These waves propagate by causing particles in the medium to vibrate and transfer the energy of the wave. Electromagnetic waves, such as light waves, do not require a medium and can travel through a vacuum.


All waves need a medium to travel?

No, only surface and mechanical waves need a medium, compressional waves can travel through space. (Such as light from the Sun).I think light (EM) waves are the only ones that can travel through a vacuum. Sound waves require a medium.


Why doesn't light need a medium to travel?

Light is composed of particles called photons that can travel through empty space because they do not require a medium to propagate. This is due to the wave-particle duality of light, where it behaves both as a wave and a particle, allowing it to travel through vacuum without the need for a medium like air or water.