/sci/ - Science & Math

>It's for the good of this community.

>speed of light is 299792458m/s
Relative to what or whom? Whose seconds, since the length of one second for the observer is not the same as for the one travelling at c? If A is travelling at 0.5c along the x axis, and B is travelling at 1c along the x axis in the opposite direction, is B not travelling at 1.5c relative to A?
>yeah but only absolute speed matters
Ok, then what's the reference point? What's the absolute zero of speed compared to which c is the speed of light?

>>15181498
two hotwords that mean nothing
reapply or no come on

Hey soo I haven't browsed here in a while.
What is all this shit? QRD?

>be math professor
>develop controversial idea about numbers
>create series of youtube videos to promote it
>largest group of supporters come from the anime nazi website

>look for a part time job to build up work experience while studying
>full time jobs, internships, and trainee programs
out the ass
>not a single part time job in sight
Do engineering related part time jobs not exist or something?

So lets say a "friend" throws a ball at my face at 10m/s, would this hurt more if I was running towards the ball at some velocity (lets say 5m/s), or if I were stationary?

It feels like it should hurt more, but the damage to your face comes from the sudden deceleration due to the impact, and whether I am running towards the ball or not, the ball will always have the same amount of force with which it can decelerate my face, if the ball can apply 5m/s of acceleration to my face, it shouldn't matter if I'm going from +5m/s (running towards it) to 0m/s or from 0m/s to -5m/s. Which one is it?

What If I take a very large tank of water, large enough that adding a small drop of water would increase its level by less than the Planck length?

when you get down to it, isn't human consciousness basically a chaotic fractal in 5 dimensions?

If a black hole dilates time so much that it's basically a timestop at the event horizon, how come things can actually fall into it? Wouldn't they, from our perspective, just stay near the event horizon until either the black hole evaporates or the universe dies?

Does this mean that while black holes seem to live for very long to us due to timedilation, from their point of view they only live for infinitesimal timespans?

>no such thing as absolute time

explain

why can't we just use the entropy of the universe as an objective reference point