Orodruin's latest activity
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Orodruin reacted to Vanadium 50's post in the thread Undergrad What keeps dark matter in galactic halos? with
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Rephrasing: Wow! I don't think I have ever seen an interval of 6x1016 meters s between a message and its reply. -
Orodruin replied to the thread Undergrad How can you model charge?.The previous reply is excellent, so I will just add that the role of physics as an empirical science is to describe how things work, not... -
Orodruin replied to the thread How is x-vt a rightward moving wave?.I’ll try to offer yet another perspective. The function ##f## describes the shape of the wave. We can consider a point on the wave with... -
Orodruin replied to the thread Vector calculus: line element dr in cylindrical coordinates.Because it was never there to start with. The position vector in cylinder coordinates is ##\vec r = \rho \hat \rho + z \hat k##, there... -
Orodruin replied to the thread Praise 2025 PF Member Awards Ceremony.Thank you everyone who voted for me and others! Not sure I deserved it this year considering how inactive I have been over the last 12... -
Orodruin replied to the thread Undergrad Is this another "paradox" or a veritasium mistake?.Yes, they would, but this would be attributed to the spaceship accelerating rather than the light following a curved path. -
Orodruin replied to the thread Undergrad What happens when two Neutrinos collide?.If neutrinos collide they would undergo a regular weak interaction. This can either be elastic or inelastic depending on energy. An...