Discussion Forum

HOW DOES LIGHT TRAVEL IN SPACE?

Q1)As far as i know light require some medium so, how does light travel through space as there is no medium in space ?
Q2)How does light(photon/ light quanta) particles make us see objects or u can take it as how does is shines or give light?
i know it its property its a fact i know but but why & how does it give light in specific.

9 Comment threads
0 Thread replies
0 Followers
 
Most reacted comment
Hottest comment thread
1 Comment authors
poornakumar bMichael Zwilde_spacePhilip JDude Recent comment authors
  Subscribe  
newest oldest most voted
Notify of
poornakumar b
Guest
poornakumar b

Answer to your Q1): EM radiation (light is part of it) needs a medium (Ether) or not was settled long ago (almost a century) by ‘Michelson-Morley’ experiment that couldn’t prove its (Ether’s) existence. Einstein took off from this failure and proposed that in the direction of motion the ‘body’ (on which the ‘set-up’ rests) actually shrank (FitzGerald Contraction) on account of, in proportion to the speed. That is how the Relativity theory began. Light can travel in vacuuo and at a constant speed. In response to your other query ‘How does light travel’ it travels in straight line unless a… Read more »

Michael Z
Guest
Michael Z

Light DOES NOT need a medium to travel through so it is able to travel anywhere in space.

wilde_space
Guest
wilde_space

Light is waves in electromagnetic field, and this field is everywhere.

Philip J
Guest
Philip J

Alan & George are spouting the politically correct establishment view–which is totally wrong! All waves require a medium. The medium of light is the ether, which I believe is also the medium of electrostatic force, the strong nuclear force and gravity. Light waves propagate in the manner of acoustic shear waves in a solid medium. The ether is an ultra-dense, ultra-stiff solid. It has the form of a foam. The cosmic foam of our universe is the ether foam of a super-universe, and the ether foam of our universe is the cosmic foam of a sub-universe. By “ultra-dense”, I mean… Read more »

Dude
Guest
Dude

Light travels thru a vaccum, whoever is giving all the thumbs down is incorrect.

visible light has enough energy to activate nerve endings in our eyes and send signals to our brain to interpret as colors

eelfins
Guest
eelfins

Space (or rather space-time) can be thought of as an electromagnetic field which light propogates along. If it was not, then light would not be possible. Light seems to travel through space like a wave, and affect matter like a particle. How do we see light? Our eyes evolved that ablity because it’s useful.

Scott
Guest
Scott

called particulate displacement. pulsons which are microscopic photons can go at instantaneous speeds through time and space in any amount. you cannot see pulsons as they are smaller than your visual cortex and perceive but they are there just look at the center of the sun its helium core contains a variance stream that links intrinsically to all the other stars in the universe through time and space. think of the center of stars as a map of the entirety of the life of the universe. particulate dodecagons(neutrinos ie dark matter) are the mediums which photons travel as empty space… Read more »

George
Guest
George

(1) — None of the electromagnetic radiation, which also includes radio waves, microwaves, infrared radiation, ultraviolet radiation, X-rays and gamma rays requires a medium to travel.

Sound requires a medium to travel since it is a pressure wave which travels through particles.

(2) — Photons bounce off an object then into ours eyes, which is how we see objects, then your brain converts it into images for you.

Alan
Guest
Alan

You are thinking of sound, sound needs a medium to travel in, photons travel like bullets, it’s easier through space than atmosphere or glass.

We see objects by reflection, photons bounce off an object straight into your eye where they excite the retina