What would the universe be like if the speed of light were infinite?
That’s About the Size of It
If photons are point particles, how does the mesh on your microwave oven prevent microwaves from reaching you?
Light in Motion
From the light of our galaxy we can see not only what’s there, but the dynamics of how it’s changing.
No Makeup Selfie
For Interstellar, scientists created an accurate view of a black hole. How much the science reached the screen?
Burden of Proof
What if the speed of light was different in different directions, and only appears to be constant?
Slow Light
We think of light as being fast, but on a cosmic scale it’s incredibly slow.
Need for Speed
Scientists have not proven the speed of light isn’t constant.
Weight For It
In an earlier post I wrote about how light moves at a single universal speed. Not only has this been well observed experimentally, it forms the foundation for the theories of special and general relativity, which are also well supported by experiment. Often, relativity is summarized as “nothing can travel faster than light.” Which raises the interesting question, what about gravity?
Light Matters
The inherent speed of light is built into the very nature of what light is. Since the fundamental leptons and quarks that comprise matter have electric charge, they are also subject to the fundamental nature of light speed. All the strange aspects of time dilation and warped gravity work in such a way that the speed of light is always preserved.