weirdoguy's latest activity
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weirdoguy replied to the thread Rethinking Physics Education.I see a lot of steps here. Which one do you want to consider? And if you treat all of it as one step, then I don't really think that you... -
weirdoguy replied to the thread Rethinking Physics Education.Which one? Besides, I don't think that every single mathematic manipulation has physical meaning. Again, what's the physical meaning of...
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Well-intentioned but unrealistic. This article encapsulates what I gathered after more than 40 years of teaching university-level...
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weirdoguy reacted to Orodruin's post in the thread Writing a vector parallel and normal to a unit vector ##\hat n## with
Like.
I actually think ##\vec A - (\vec A \cdot \hat n)\hat n## is nicer than the double cross product. It also generalises to any dimension. -
weirdoguy reacted to hmparticle9's post in the thread The flux through a cylinder from a charge at the origin with Like.
From looking at a diagram, the only component we need to worry about is the component of the flux in the ##z##-direction. The other...
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weirdoguy replied to the thread Rethinking Physics Education.In the context of relativity it's a big waste of time. Your students have to understand that they need to rebuild their intuitions. And...
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Hold on a moment. Who is "forcing" them? You are in control of how you teach them what and when. If you suspect that the subject...
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weirdoguy replied to the thread B How does the Riemann Hypothesis/Riemann Zeta function even work?.And in physics likewise.
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weirdoguy reacted to martinbn's post in the thread B How does the Riemann Hypothesis/Riemann Zeta function even work? with Like.
You may have to accept that not evey topic in mathematics can be explained at a hight school level.
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weirdoguy reacted to sophiecentaur's post in the thread B The work done by two objects on each other with
Sad.
Do you have actual evidence that removing the frequent use of by and on has worse results? I haven't suggested anything revolutionary... -
weirdoguy reacted to sophiecentaur's post in the thread B The work done by two objects on each other with
Skeptical.
That's a new concept for me. Isn't work always a dot product of Force and Displacement? In your post, you have quoted a very simple... -
weirdoguy reacted to jbriggs444's post in the thread B The work done by two objects on each other with Like.
Which displacement? Perhaps you should read what I have written in this thread. And no. Generalized work includes other forms of energy...
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weirdoguy reacted to A.T.'s post in the thread B The work done by two objects on each other with Like.
Just because we survived some bad teachers, doesn't mean we have to propagate bad teaching.
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weirdoguy replied to the thread B Conflict between the conservation of matter and the rapid expansion of our universe.I'm sorry, but the fact that "matter is not conserved" is known for decades and is even taught at high-school level physics. I don't...
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weirdoguy replied to the thread Rethinking Physics Education.What does dividing both sides by a number represent physically? What does squaring both side represent physically?