Nugatory's latest activity

I'm not asking what it shows, I am asking what the thing it measures is. I am trying to get you to reconcile your statement that "space...

Then what does a ruler measure?

Light always travels at ##c## in vacuum. How would you tell the difference between a theory that fits reality and a theory that only...

Not if we are standing on the back of a flatbed truck so that the air is moving past us at 100 km/hr. The wind changes the speed of the...

As long as you have an appropriate published reference for that 16.35-day periodicity you’ll be OK. But if you’re the one who noticed...

(For historical purposes, it’s good to note that this thread is preceded by (in reverse chronological order) on SE: How can a clock...

This is wrong, and we can try one more time to explain why Using the frame in which A is at rest, events E1 and E2 are simultaneous -...

Not directly because the operation is symmetric: it provides the same result for 0^1 and 1^0 (where the caret is the xor operator)...

A bit of a misnomer to measure position at one point. Detectors measure a position interval therefore they don't collapse the state to a...

Because of that phrase "at the same moment". They are different "same moments", because if A and B are moving relative to one another...

I guess it depends on what information you hope to obtain- a point detector does not cover all positions, but then your location...

That's similar to saying that two bullets moving relative to one another will have different kinetic energies in different frames...

Unfortunately, Brian Greene is notorious for only giving you part of the story. His pop science books and TV shows are even worse. I...

She will only arrive at this incorrect result if she forgets to allow for the relativity of simultaneity, as you are in your...

This may be the root of your misunderstanding -until you get over it relativity will continue to confuse you. It is equally valid to...