Does Light Have Mass or Is It Just Energy?

  • Context: High School 
  • Thread starter Thread starter wonofdaweefolk
  • Start date Start date
  • Tags Tags
    Light
Click For Summary
SUMMARY

Light does not possess rest mass; however, it carries energy and momentum. Its interaction with gravity is a result of the curvature of spacetime created by mass. This phenomenon demonstrates that while light is fundamentally energy, it behaves as if it has mass when influenced by gravitational forces.

PREREQUISITES
  • Understanding of Einstein's theory of general relativity
  • Basic knowledge of the concepts of energy and momentum
  • Familiarity with the curvature of spacetime
  • Awareness of the distinction between rest mass and relativistic mass
NEXT STEPS
  • Research Einstein's general relativity and its implications on light and gravity
  • Explore the concept of momentum in the context of photons
  • Study the effects of gravitational lensing on light
  • Investigate the relationship between energy and mass in the context of E=mc²
USEFUL FOR

Physicists, students of physics, and anyone interested in the fundamental properties of light and its interaction with gravity.

wonofdaweefolk
Messages
1
Reaction score
0
i'm wondering something... does light have any mass?
 
Science news on Phys.org
Light has no rest mass. However, it has energy and is affected by gravity as if it had mass.
 
Light also has momnetum. Its affected by gravity due to the curvature of space time that masses produce.
 

Similar threads

High School Help with refraction of light
  • · Replies 9 ·
Replies
9
Views
2K
High School Light beams and their reflection
  • · Replies 64 ·
3
Replies
64
Views
6K
High School How would light work on a mirror very far away?
  • · Replies 11 ·
Replies
11
Views
3K
High School Is all EM radiation light?
  • · Replies 35 ·
2
Replies
35
Views
5K
High School Could you use the Moon to reflect sunlight onto a solar sail?
  • · Replies 21 ·
Replies
21
Views
4K
Undergrad The kinetic energy of proton-electron for a black body
  • · Replies 8 ·
Replies
8
Views
3K
High School Why does light diffraction create circular patterns?
  • · Replies 5 ·
Replies
5
Views
2K
High School Why does light diffract into only seven colours?
  • · Replies 81 ·
3
Replies
81
Views
9K
High School Scattering of light inside a room
  • · Replies 22 ·
Replies
22
Views
4K
High School What Keeps Photons Traveling Across the Galaxy?
  • · Replies 13 ·
Replies
13
Views
2K