Yahoo Canada Web Search

Search results

1. physics.stackexchange.com › questions › 55109What is light, and how can it travel in a vacuum forever in ...

   physics.stackexchange.com › questions › 55109

   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.

2. www.physicsforums.com › threads › propagation-ofPropagation of light in a vacuum - Physics Forums

   www.physicsforums.com › threads › propagation-of

   • Cached

   Mar 6, 2018 · Can light travel in a straight line in a vacuum? Yes, light travels in a straight line in a vacuum. This is because there are no particles to scatter or reflect the light, causing it to travel in a specific direction.

3. Images

   • 
   • 
   • 
   • 

   View all

4. www.physicsforums.com › threads › how-does-lightHow does light travel Through a vacuum - Physics Forums

   www.physicsforums.com › threads › how-does-light

   • Cached

   Jul 26, 2011 · I think I understand the basics that, light as it travels through a vacuum oscillates between a magnetic field and a electric field at 90 degrees to each other. How does this all, get a photon from point A to point B in a vacuum if there is no "ether" with which a photon can travel within? Thanks

5. byjus.com › question-answer › can-light-travel-in-vacuumCan light travel in vacuum? - BYJU'S

   byjus.com › question-answer › can-light-travel-in-vacuum

   • Cached

   Light from sun reaches earth through the vacuum present in the space. Light does not require any medium to travel. However, Light can also travel in medium like air, water and solids.

6. www.physicsforums.com › threads › can-light-travelCan light travel through a vacuum? - Physics Forums

   www.physicsforums.com › threads › can-light-travel

   • Cached

   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.

7. van.physics.illinois.edu › ask › listingDoes Light Travel Forever? | Physics Van | Illinois

   van.physics.illinois.edu › ask › listing

   • Cached

   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.

8. People also ask

   Can light travel through a vacuum without a medium?

   • 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 is a vacuum able to propagate light? - Physics Stack Exchange

   physics.stackexchange.com/questions/109982/how-is-a-vacuum-able-to-propagate-light

   See all results for this question

   Does light travel through a vacuum?

   • Of course yes. Light from sun reaches earth through the vacuum present in the space. Light does not require any medium to travel. However, Light can also travel in medium like air, water and solids. Example,we can see things inside water and glass which is a liquid and solid, which is due to travel of light. Q.

   Can light travel in vacuum? - BYJU'S

   byjus.com/question-answer/can-light-travel-in-vacuum/

   See all results for this question

   Does light travel through a vacuum at 90 degrees?

   • I think I understand the basics that, light as it travels through a vacuum oscillates between a magnetic field and a electric field at 90 degrees to each other. For the most part, that’s true. There are some instances where there is a time varying EM field in which the E field is not perpendicular to the B field though.

   How does light travel Through a vacuum - Physics Forums

   www.physicsforums.com/threads/how-does-light-travel-through-a-vacuum.517171/

   See all results for this question

   Is light a vacuum?

   • Light is itself an oscillation of electric and magnetic fields. The oscillation propagates according to Maxwell's equations. And a vacuum means devoid of mass, not necessarily electromagnetic fields. How do you define an ether and what gap in our understanding requires it?

   How does light travel Through a vacuum - Physics Forums

   www.physicsforums.com/threads/how-does-light-travel-through-a-vacuum.517171/

   See all results for this question

   How does light travel between a magnetic field and electric field?

   • Thanks for helping me understand this.In summary, light travels between a magnetic field and electric field at 90 degrees to each other. This oscillation propagates according to Maxwell's equations. A vacuum means devoid of mass and this is why there is an electromagnetic field present in vacuum.

   How does light travel Through a vacuum - Physics Forums

   www.physicsforums.com/threads/how-does-light-travel-through-a-vacuum.517171/

   See all results for this question

   Can light waves propagate through a vacuum?

   • Still the fields are there! Therefore, just as a matter wave (which is nothing but a particle), light waves, i.e. waves in the electromagnetic field, can propagate through such a "perfect vacuum". Vacuum fluctuations or quantum mechanics has nothing to do with it. This is true, even in purely classical electromagnetism.

   How is a vacuum able to propagate light? - Physics Stack Exchange

   physics.stackexchange.com/questions/109982/how-is-a-vacuum-able-to-propagate-light

   See all results for this question

9. www.universetoday.com › 83832How Does Light Travel? - Universe Today

   www.universetoday.com › 83832

   • Cached

   May 19, 2016 · Light actually “slows down” every time it has to travel through anything but a vacuum. Look up Cherenkov radiation to see what happens when light initially travels faster than it can through...