« first day (2005 days earlier)      last day (28 days later) » 

HNQ
4:41 AM
2
Q: How to conceptualize Newton's apple?

SermoI have no physics background, which is the genesis of my question. In pop-science, it is frequently mentioned that Newton's apple didn't fall toward his head, but rather that his head came up and smacked the apple. Or, put another way, if you jump out of a window, you don't crash into the Earth...

 
 
16 hours later…
HNQ
8:28 PM
2
Q: Seeming violation-wave travelling faster than speed of light

Schwarz KugelblitzConsider the basic relation $$E=\sqrt{(pc)^2+(mc^2)^2}.$$ Every particle possesses a wave nature and it depends on the situation in which one among the two is perceptible... Consider a particle with rest mass $m$. If we consider the speed of De-Broglie Waves, as usual for a wave $$v_{wave}=\nu ...

 

« first day (2005 days earlier)      last day (28 days later) »