Any mass accelarating @ 'c' is light

  • Context: Graduate 
  • Thread starter Thread starter kittz
  • Start date Start date
  • Tags Tags
    Light Mass
Click For Summary
SUMMARY

The discussion centers on the relationship between mass, energy, and the speed of light (c) as described by Einstein's equation E=mc². It is established that mass cannot be accelerated to the speed of light; rather, mass and light (photons) exist in distinct realms. Photons are massless particles that inherently travel at the speed of light, while massive particles cannot reach this speed. The concept of c² is clarified as a dimensionless constant in certain units, emphasizing the importance of understanding different unit systems in the context of relativity.

PREREQUISITES
  • Understanding of Einstein's theory of relativity
  • Familiarity with the equation E=mc²
  • Knowledge of the distinction between mass and massless particles
  • Basic comprehension of inertial frames of reference
NEXT STEPS
  • Study the implications of mass-energy equivalence in physics
  • Explore the properties of photons and their behavior at light speed
  • Learn about different unit systems used in relativity, including geometric units
  • Investigate the concept of inertial frames of reference in detail
USEFUL FOR

Students of physics, educators in relativity, and anyone interested in the fundamental principles of mass and energy in the context of light speed.

kittz
Messages
1
Reaction score
0
""any mass accelerating @ 'c' is light ""

hii everyone, from E=mc^2 I've seen that "When mass accelerating @ c , its simply called energy".


( light speed is constant everywhere nothing can cross that limit. So, c^2 is considered as c , in fact c^2 is for dimensional accuracy)



so, my doubt is :When mass accl to 'C' , can we say that the resultant energy is LIGHT?
 
Physics news on Phys.org


If I understand your question correctly, no, mass doesn't turn into light when accelerated to the speed of light. Infact, they are two distinct realms. There are particles with mass that can never achieve the speed of light. Then there are particles, with photons being one example, that are massless that travel exclusively at the speed of light.
 


c2 isn't a speed. In conventional units, such as http://en.wikipedia.org/wiki/International_System_of_Units" , which are handy for relativity, length and time are considered to have the same dimensionality, so c is a dimensionless constant. In geometric units, c is set equal to 1, so c2 also equals 1. But in other systems of units, c2 has a different numerical value to c as well as a different dimension.

As Pengwuino says, something is either traveling at speed c (as measured in what's called an "inertial frame of reference") or not. There's no way to accelerate from another speed to c, or from c to any other speed.
 
Last edited by a moderator:

Similar threads

  • · Replies 25 ·
Replies
25
Views
2K
  • · Replies 26 ·
Replies
26
Views
2K
  • · Replies 45 ·
2
Replies
45
Views
5K
  • · Replies 15 ·
Replies
15
Views
1K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 34 ·
2
Replies
34
Views
4K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 18 ·
Replies
18
Views
2K
  • · Replies 25 ·
Replies
25
Views
2K