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Yes, indeed
- Yes, indeed! One fascinating property of light is its ability to propagate through empty space or what we call a vacuum. Unlike sound waves that require a medium like air or water to travel, light can move freely even without any material substance present.
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.
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.
Dec 25, 2011 · Electric and magnetic fields can exist in a vacuum. When an electric field changes, it creates a changing magnetic field, and vice versa. Oscillations between those fields travel at the speed of light through the vacuum. That's the classical view, which does not involve photons.
Jan 23, 2013 · In contrast, light waves can travel through a vacuum, and do not require a medium. In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the...
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Oct 26, 2006 · Light has no charge at all. It consists only of electric and magnetic field, each endlessly recreating the other as the pair zip off through empty space at the speed of light. The fact that light waves can travel in vacuum, and don’t need any material to carry them, was disturbing to the physicists who first studied light in detail.
May 13, 2003 · Yes, light can travel through a vacuum. A vacuum is an area devoid of matter, including air molecules, which are usually responsible for scattering and absorbing light. Therefore, in a vacuum, light can travel unobstructed in a straight line.
In contrast, light waves can travel through a vacuum, and do not require a medium. In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the wave is not interacting with anything else.
