haruspex's latest activity
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haruspex replied to the thread High School A question on the geometry of black holes.I am not alone in campaigning against the "rubber sheet" illustration. It gives the impression that masses fall into a depression. Why... -
haruspex replied to the thread High School Ant on a stretchy rope puzzle.I haven’t checked your iff condition, but taking that to be correct, wouldn’t ##t\ln(t)\ln\ln(t)\ln\ln\ln(t)…## also do? -
haruspex replied to the thread Undergrad The natural numbers and logical consequences of them.That’s what I was trying to lead @mr3000 to in post #6, but got no response. -
haruspex replied to the thread Undergrad The stream from the bottom of the bottle becomes short when the bottle is filled from above.Ok, but I feel it is reasonably clear. -
haruspex replied to the thread Why does a fan cool you in a sealed room if it adds heat?.Not necessarily. Can you answer the earlier question I asked?: You were in the ballpark with this remark but that's not quite it. -
haruspex replied to the thread Undergrad The stream from the bottom of the bottle becomes short when the bottle is filled from above.So where does your interpretation differ from mine in post #4? -
haruspex replied to the thread High School Equine Physics -- When a horse gets stuck going up a steep slope.Your shifting forward may have been counterproductive. That action, while in progress, would have created a torque tipping the horse... -
haruspex replied to the thread Undergrad The stream from the bottom of the bottle becomes short when the bottle is filled from above.I feel you may have misunderstood the question. I presume images 1 and 2 show the bottle being continuously filled from a tap, while 3... -
haruspex replied to the thread Undergrad The natural numbers and logical consequences of them.Operations like addition and multiplication are only defined for numbers, which are necessarily finite. What if we try to extend those... -
haruspex replied to the thread Why does a fan cool you in a sealed room if it adds heat?.How does spreading it evenly lower the general temperature. Wouldn’t it raise it? It is worth going into evaporation in a bit more... -
haruspex replied to the thread The optimal way of dividing the bet three ways.To calculate expected winnings (without ensuring the same payoff in all eventualities) you would need some basis for the actual... -
haruspex replied to the thread Field at a point on the axis of a ring with variable charge density.I agree, the positive and negative charges depicted do not match the stated charge distribution. The diagram is tricky to interpret... -
haruspex replied to the thread Engineering Graphical Four Bar Linkage question.It confirms that the position you measured the 134° from is purely illustrative. It is not relevant to the actual question. Just use... -
haruspex replied to the thread Engineering Graphical Four Bar Linkage question.What original position? Are you basing that on a diagram provided with the question? If so, I would think it is purely illustrative of... -
haruspex replied to the thread Engineering Graphical Four Bar Linkage question.You must have written it for a reason. Where does it come from? What do you mean by a "pressure angle"?