/sci/ - Science & Math

>Electron and positron attract each other to annihilate
>But electron won't fall into a nucleus full of positive charge
Why?

What's an electron? Is it point-like or wave-like? Why does it emit em waves when it jumps down energy levels? Why does it have a property called spin? What gives rise to its charge?

Is there anything more pathetic than a PhD student?
>slave to professors
>paid less than minimum wage
>have to teach/supervise undergraduates
>Maybe, just maybe, if you're lucky, there's a job at the end waiting for you
>the PhD thesis is seen as worthless 99.99% of the time and lower than publishing in a bullshit journal
I have never seen a lower and more pitiable person than a PhD student. I respect toilet cleaners more than PhD students.
I feel so sorry for them.

>>15141941
>NASA