Today marks 30 years since the passing of Ella Fitzgerald, the “First Lady of Song.” Her timeless voice reminds us that jazz is pure emotion, forever alive in her music. 🎶✨ #EllaFitzgerald #Jazz
Diego Cambiaso 🏳️🌈
Also, please enjoy this depiction of an electron gun from "Un micro-ordinateur et ses secrets" :
Ok #physics friends. My brain wants to say that a rolling ball has two forms of kinetic energy. one the kinetic energy it would have from pure translation, and one the kinetic energy it would have from pure rotation (say floating in mid air rotating). That these can be calculated independently […]
So, when you think about what happens to a ball that keeps it rolling down the track or falling until it hits the floor and then stopping that same thing should be happening to the surface of a scale, after all the balls stop falling when you drop them into […]
[Original post on mastodon.sdf.org]
Alex's idea of rolling a magnet down a magnet board was a pretty good idea, so when he had his friend over, we ran the experiment. We did it at a high angle, and directly vertical. We also dropped the magnet in free space... Dropping was from a low height […]
[Original post on mastodon.sdf.org]
Some coyotes woke my dog and she started howling and now I can't get back to sleep after closing the window. Dogs sleep so easily though so shes back asleep.
Anyway, now I'm thinking about #physics. It occurs to me that conservation of energy can get us all we need to know in the rolling or […]
@johncarlosbaez
I should be able to formulate this as an integral over the volume of a velocity field formed by a rotation around CM and a constant v0 superimposed though. I just haven't looked at the algebra yet.
None of this is surprising, but it gives us an extremely reliable quantitative indicator that there is something that the floor does to a mass. This kind of precision is going to be unheard of in most of our home experiments. Much more than constant acceleration or anything like that, this shows […]
How do we know that the scale manufacturers don't just lie to us? Like, maybe adding two balls causes 2^1.103 times as much surface "interaction" as 1 ball? or whatever but they take this number to the 1/1.103 power and straighten out the line? In some ways we don't but how about this... suppose […]
KailoKyra
Daniel Lakeland
Daniel Lakeland
Daniel Lakeland
Daniel Lakeland
Daniel Lakeland
Daniel Lakeland
Daniel Lakeland
@johncarlosbaez
While it was hovering in front of me unmoving, Spun it up to high spin rates by doing some work... and then slowed myself down to my original frame of reference... The work I did on spinning the ball would be added to the kinetic energy I would measure for the ball from my […]
