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safesphere
  • Member for 4 years, 11 months
  • Last seen this week
  • Kansas City, USA
53 votes
Accepted

Speed of light vs speed of electricity

47 votes
Accepted

Why doesn't hot charcoal glow blue?

43 votes

Why aren't rainbows more common?

21 votes

Can we use redshift measurements to determine absolute velocity?

19 votes
Accepted

Why does an acoustic guitar body amplify all notes and not just certain ones?

17 votes

Are black holes indistinguishable?

16 votes

Are all fields in the universe we know of quantum fields?

16 votes
Accepted

Do the Earth and I apply the same gravitational force on each other in GR?

15 votes

Trouble with polarizing filters

12 votes

Why does temperature remain constant when water is boiling?

12 votes

How is silver a better conductor than platinum?

12 votes
Accepted

How does a guitar work?

9 votes

At what cosmological redshift $z$, does the recession speed equal the speed of light? How is it calculated?

8 votes
Accepted

Very Massive Relativistic Body

7 votes

With what velocity are we moving along the time dimension?

7 votes

Can a 1 watt heating element boil water?

6 votes
Accepted

A special relativity conundrum

5 votes
Accepted

Galilean spacetime interval?

5 votes
Accepted

How do we know that certain quantum effects are random?

5 votes
Accepted

Unwanted frequencies in sawtooth tone

5 votes

Can a system have negative entropy?

5 votes

If (flat) earth were accelerating at $9.8m/s^2$ how long would it take to reach the speed of light?

5 votes

Would every particle in the universe not have some form of measurement occurring at any given time?

5 votes

What equation can I use to calculate escape velocity as the radius increases from the Schwarzschild radius?

4 votes

On the topic of imaginary-time

4 votes
Accepted

Why EHT have to use Fourier transform to process the image?

4 votes
Accepted

Why are observers/reference frames able to see themselves moving through time but not through space?

4 votes
Accepted

Why does dark-matter distribute in spherical shape around the galaxy?

4 votes
Accepted

The model of photon scattering, is actually about a complete absorbtion?

4 votes

Does a point charge inside a conducting shell cause redistribution of charge in the shell?

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