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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.
physics.highpoint.edu/~jregester/potl/Waves/Light/NatureOfLightA.htm
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.
- How far does light go? how long does light go. - Jason (age 11) A: Hi Jason, Light just keeps going and going until it bumps into something.
- less than one photon? Can light intensity reduce to a level where it's energy is less than 1 photon (probably after travelling an almost infinite distance from a point source)?
- stars too far away to see? does there is any star that we can can't get it's light because of itis farness?...... sorry with having any problems in my English gramer, my English language is not good enough.
- light going out to space. If we are reflections of light, does that reflection make it out into space and keeps traveling til its asorbed.
Dec 25, 2011 · Photons always travel at the speed of light. When in a vacuum (and in the absence of gravity) they don't change direction either. So Newton's Third Law is not involved. When a photon hits a mirror (in, for the sake of argument, a vacuum) it is reflected, i.e., it changes direction.
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 .)
Feb 18, 2024 · Q: Why can light travel through space while other forms of energy cannot? A: Light is an electromagnetic wave that does not require a material medium to propagate. This allows it to travel through the vacuum of space without encountering any resistance.
May 13, 2003 · Yes, a vacuum is necessary for light to travel at its maximum speed. In any other medium, such as air or water, light will encounter particles that can slow it down. However, in a vacuum, there are no particles to interact with, allowing light to travel at its maximum speed without any obstructions.
