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xirow
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I've always found it confusing that light is the only wave that doesn't move through a medium, is it possible that light does move through a medium, and dark matter is the parts of the universe the medium doesn't extend to.
xirow said:I've always found it confusing that light is the only wave that doesn't move through a medium, is it possible that light does move through a medium, and dark matter is the parts of the universe the medium doesn't extend to.
xirow said:thanks, I had no idea dark matter was so prominent
xirow said:I've always found it confusing that light is the only wave that doesn't move through a medium.
Light is a type of electromagnetic wave, which means it does not require a medium to travel through. Unlike sound waves, which require particles to vibrate in a medium such as air or water, light can travel through a vacuum.
This is because light is composed of oscillating electric and magnetic fields that can exist in a vacuum. These fields do not need a medium to propagate, unlike mechanical waves such as sound or water waves.
Light travels through space as a result of its oscillating electric and magnetic fields. These fields create disturbances that can travel through a vacuum at the speed of light, enabling light to reach us from distant stars and galaxies.
Yes, light can travel through other materials such as air, water, and glass. However, the speed of light will be slower in these materials compared to a vacuum because the particles in the material can interact with the light waves and slow them down.
In a vacuum, the speed of light is approximately 299,792,458 meters per second. In other materials, the speed of light can vary, but it is always slower than in a vacuum. For example, the speed of light in air is about 299,705,000 meters per second, and in water, it is about 225,000,000 meters per second.