Herman Trivilino's latest activity
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Herman Trivilino replied to the thread I Feynman's derivation of average square distance variation in Brownian motion.That should be ##\frac{d}{dt}x^2=2x(\frac{dx}{dt})##. I don't understand this question. Feynman is simply taking the derivative of the... -
Herman Trivilino replied to the thread B Understanding Newton's Third Law and the Net Force on Objects.FWIW the term action-reaction can imply that the action has some kind of different status than the reaction. As if one precedes the...
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Herman Trivilino replied to the thread B Understanding Newton's Third Law and the Net Force on Objects.It is not. The normal force exerted on an object by a surface and the normal force exerted on that surface by that object are Third Law...
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Herman Trivilino replied to the thread Reconcile poundforce w/slug and lbmass.The definition I gave based on SI units is indeed the definition of the pound-force used by NASA's manned lunar missions in the late...
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Herman Trivilino reacted to jbriggs444's post in the thread Reconcile poundforce w/slug and lbmass with
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By the time I went to high school seven or eight years later the science classes were teaching nothing but MKS (or cgs). Like @Mister T... -
Herman Trivilino replied to the thread Reconcile poundforce w/slug and lbmass.No. There is no officially-sanctioned definition of the pound-force. The definition of the pound Avoirdupois is 0.453 592 37 kg. The...
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Herman Trivilino replied to the thread I want to help Physics education. What should I do?.Look into the work Eric Mazur did at Harvard University. When he started teaching he was taken aback by student course evaluations that...
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Herman Trivilino replied to the thread I want to help Physics education. What should I do?.@TensorCalculus I didn't think about you being on the other side of the pond. I'm sure there are journals there dedicated to PER, or...
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Herman Trivilino replied to the thread I want to help Physics education. What should I do?.To me, that speaks volumes about why the physics program lacks vigor at your school. Why wait until next year to speak to your next...
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Herman Trivilino replied to the thread Change in Displacement Formulation.Who wrote that homework statement? First of all, it doesn't ask for a response. Secondly, displacement equals change in position. Change...
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Herman Trivilino replied to the thread I want to help Physics education. What should I do?.Choose a college with a physics department that is actively involved in Physics Education Research (PER). Start reading up on...
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Herman Trivilino replied to the thread I want to help Physics education. What should I do?.This can be remedied with a skilled or properly-prepared instructor. I don't know if it's you, someone else, or a group of more than...
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Herman Trivilino replied to the thread B Simple mass/scale puzzle.It's difficult to predict, without experimenting, how a person will react to an explanation. Ask someone who thinks there's no gravity...
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Herman Trivilino replied to the thread A hanging ring carrying current in a uniform magnetic field.Only if the tension in the string is nonzero, and I see no reason it can't be.
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Herman Trivilino replied to the thread Is this an oversimplification? (treating a lens as a set of prisms).The larger the number of prisms, the better the approximation. But the surface of each prism is perpendicular to the normal at the...
