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This is a link post At school I had crazy science teachers
just like this guy.

They were the best teachers I ever had.
(, Thu 12 Nov 2020, 22:16, Reply)
This is a normal post My best science teacher was the one who gave us the drugs talk.
"Pay no attention to stories about how [LSD] will make you see pink elephants and all that; they're not true.

On the other hand, when I was walking home after a rave one night I stepped on a Mars bar wrapper. It told me to fuck off."

ed: That video seemed to go by really quickly. I can't wait to try out emptying a bottle that way.
(, Thu 12 Nov 2020, 22:22, Reply)
This is a normal post
I too can't wait to be emptying bottles.
(, Fri 13 Nov 2020, 12:52, Reply)
This is a normal post I thought centrifugal force didn't exist?
We were always taught it was centripetal acceleration acting on a mass, and the reaction in the string gives an apparent force.
Probably why he kept referring to it as 'so-called' centrifugal force.
(, Fri 13 Nov 2020, 7:28, Reply)
This is a normal post It emerges
when you use a rotating frame of reference.

Which is a (possibly) clever thing to say that I don't really understand, but stole from XKCD...

xkcd.com/123/
(, Fri 13 Nov 2020, 12:42, Reply)
This is a normal post The point is this phantom force feels real enough when it's smearing the fine paste that used to be you evenly across the inside edge of a centrifuge.

(, Fri 13 Nov 2020, 18:01, Reply)
This is a normal post
It depends on your frame of reference I believe. If the FoR is rotating with the system, then the force is centrifugal. If the FoR is an inertial one, it's centripetal.
Edit: Yeah, essentially what FB's xkcd link says. Should probably refresh before commenting next time.
(, Fri 13 Nov 2020, 13:08, Reply)