Physics PDF

Pi can be found almost anywhere.


A colleague recently showed me this amazing video. Were you familiar with this manifestation of Pi in nature?

In case you are interested, 3Blue1Brown uploaded a demonstration of this as a subsequent video on YouTube. How about trying to prove this by yourself?

What time is it?


How long does it take for a physicist to tell you what time it is? Try first defining what the concept of time it self means.

Professor Brian Cox and Harry Hill talk about time: