« first day (3066 days earlier)   

HNQ
6:33 AM
2
Q: Does a body released from the end of a rotating tether still rotate?

David COK, thinly disguised but simplified Spinlaunch physics question- Assume all in vacuum, no gravity to speak of, classic 'assume the cow is frictionless' conditions. Ball at end of tether, tether attached to an axle at other end, axle is spinning, ball is describing a circle, tether releases, ball ...

 
 
7 hours later…
HNQ
1:31 PM
2
Q: If we have a cosmic microwave background should't we also have a cosmic radio wave background?

Werex ZenokI'm a layman in physics, but here is what I understand: What we see in the sky with naked eyes is a map of electromagnetic waves in the frequency visible to the human vision. But that kind of observation is too limited because as the universe expands, the light coming to us redshift to the invis...

 

« first day (3066 days earlier)