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How can light waves travel without a medium?

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2010-01-15 01:42:06
2010-01-15 01:42:06

Light exists as tiny "packets" called photons. These photons exhibit both the properties of waves and particles. since it acts like a particle it can travel without a medium.

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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.


Heat waves, light waves, electromagnetic waves,


Electromagnetic waves can travel with or without a medium.


Waves cannot travel without a medium. These waves must travel though some sort of medium in order to be heard.


Sound waves cannot travel without a medium. Therefore, any big explosions in space cannot be heard. Light waves can travel without a medium.


Sound waves need a medium in order to propogate. Light waves can travel without a medium. The speed of light is 3*108m/s.


Light waves cannot travel through an opaque object.Sound waves intensity is reduced drastically when it crosses an opaque object.Sound waves cannot propagate without a medium whereas light can travel without a medium of propagation.



Light waves, like all electromagnetic waves, travel without a medium, so they can travel through empty space. Sound waves, on the other hand, do require a medium to travel or propagate; therefore, they can not travel through empty space.


Sound is a longitudinal wave and a light wave is a transverse wave. Sound requires a medium to travel through but light can propagate without any medium.


No. Proof: There's no physical medium between the sun and earth. Light waves are different from sound waves, so light waves are able to travel without matter. That's why sound can't travel in space (a vacuum) but light can travel from the sun to earth through the vacuum of space.



Waves need not require medium to travel through. Only Mechanical waves like sound waves require medium to travel through. Electromagnetic waves travel in vaccum like light waves. Some waves transmitted in a medium due to disturbances in the medium .


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.


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No, they are Electromagnetic waves and can travel through a vacuum. They do not need a medium.


there are no waves that can travel without a medium, that why waves don't exsist in space.


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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.


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.


Yes, mechanical waves do need a medium in order to travel. Other waves, such as light, do not (thus they can travel through space).


No, sound waves travel much slower in the medium air.


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light waves or electromagnetic waves are transverse and sound waves are longitudinalElectromagnetic waves can be both transverse and longitudinal waves. Transverse waves are like ocean waves. They move the medium perpendicular to the medium which is the substance the wave is traveling on. Longitudinal waves are like a slinky. They compress and rarefact (The coils get close and move away). Longitudinal waves move the medium parallel to the energy.Electromagnetic waves don't need a medium to travel. They can travel on the medium but they don't need a medium to travel through.Mechanical waves need a medium to travel. They can't travel without one.That is why in starwars when the deathstar blows up and your whole room shakes when it does isn't possible because in space there isn't any air! Sound is a mechanical wave, since there isn't any medium there can't be any sound. If you yell in space nothing would happen because there isn't a medium for the sound waves to travel on. You can see light in space because light is an example of an electromagnetic wave which doesn't need a medium to travel.Cranberryhead. :)



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