Recent content by radoo

Can a computer simulation lead to a scientific discovery from an epistemic point of view? Do you know any of such discoveries throughout the history of physics?

You are wondering how fast you can drive your bike but not get your feet wet when the road is full of water? The answer is simple: about 2.5m/s (meters per second) or roughly 9km/h (kilometers per hour), or 5.6mph. See below for the demonstation: This is a simple physics problem which is...

I was thinking that the photoelectric effect cross section could be computed using Feynman diagrams...

Are the Feynman diagrams still applicable to more than two particles interactions? This would be very helpful in modelling many-body scattering cross-sections.

Can you please tell me how to integrate by parts the d'alembertian of a 4-variable function over a volume dx * dy * dz * dt. I have stumbled upon this seemnigly simple exercise on my way to understanding QFT of scalar fields.