PeroK's latest activity

I was a professional programmer and a student of math. If you want to write reliable programs then I recommend writing them much like...

That quote is generally said in the context of the humanities - math is significantly easier to learn these days thanks to improved...

Number #1 on the country charts. It's better than most songs on the country charts. Today's country hits tend to feature thick phony...

I have some solemn news to report. Many in the community had been wondering where the prolific @Vanadium 50 has been. V50 hasn't posted...

I see. I have to be clear about what ##\Delta x## actually represents, whether it represents ##x_{final}-x_{initial}## or...

Strictly speaking, the mass of the exhaust gases is not itself a "delta". Instead, with ##m## as the mass of the rocket: $$m_{final} =...

Note that under all circumstances: ##\frac{dX}{dt}## is the limit of ##\dfrac{X_{final} - X_{initial}}{t_{final} - t_{initial}}##. You...

It's simpler than that. Strictly speaking, ##\Delta X## has a well-defined meaning as the difference in quantity ##X##, with the...

Theoretical physicist C.N. Yang died at the age of 103 years on October 18, 2025. He is the Yang in Yang-Mills theory, which he and his...

Go to the Cosmology forum and click on "Post Thread" https://www.physicsforums.com/forums/cosmology.69/

Can you prove that the arguments about DDWFTTW are between those who understand N3 as you do and those who do not understand it? It...

:welcome:

So, my equation with the deltas was correct. The mistake happened when I switched from ##\Delta## to ##d##. That is something new. In...

We're here to discuss different opinions, not to argue from authority. I apologize if I came off as doing the latter.

Not at all. I'm offering an opinion, not a mandate. I didn't mean to imply that all students are left with these misconceptions, or...