weirdoguy's latest activity
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weirdoguy reacted to renormalize's post in the thread What is the fourth dimensional equivalent of volume? with
Like.
Hypervolume, which is bounded by 3D hypersurfaces. -
weirdoguy reacted to Physicist248's post in the thread Undergrad Linear vs rotary motion with
Skeptical.
How do you change the math of F = ma? -
weirdoguy reacted to Physicist248's post in the thread Undergrad Linear vs rotary motion with Skeptical.
And how do you think inertial navigation systems work?
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weirdoguy replied to the thread Convert Circular motion into figure-8 shaped loop.Well, I'm interested in that too, so thanks for the digression :wink:
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weirdoguy reacted to Ibix's post in the thread Convert Circular motion into figure-8 shaped loop with Like.
I think I can see how to do all of it with simple animation and "copy x/y coordinate" constraints except for the red path. Is that...
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A motion of the point ##B## relative to a frame ##Oxyz## is exactly the mapping $$t\mapsto\boldsymbol r_B(t)=x_B(t)\boldsymbol...
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weirdoguy reacted to Sylvain9595's post in the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars) with
Sad.
I won't be able to post during the next three days but when I come back I will open a new thread with a better definition of the... -
weirdoguy reacted to gen x's post in the thread Why must residential electrical systems be connected to Earth (soil)? with Sad.
Yes low resistance of earth is important but in pratice, when hot wire touch metal case, 99% of current return via neutral as it...
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weirdoguy reacted to A.T.'s post in the thread High School Fan is pushing in the front and sucking from the back with Like.
It depends on what you mean by 'suck'. Trees can pull water much higher than the 10m it gets pushed up by atmosphere. And most of the...
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weirdoguy reacted to Al_'s post in the thread Writing: Read Only Have we found an ancient space habitat? with Sad.
I think you may be referring to the nausea that is caused by turning your head in a small radius rotating environment. But these...
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weirdoguy reacted to Herman Trivilino's post in the thread High School Fan is pushing in the front and sucking from the back with Skeptical.
Not backwards but I did get it a bit wrong. The fluid drains out, not through the inserted tube or the eustation tube, but into the ear...
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weirdoguy reacted to russ_watters's post in the thread High School Fan is pushing in the front and sucking from the back with Like.
Yeah, some people don't like the implication of negative pressure in the word; Absolute pressure can't be negative. But to engineers...
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weirdoguy replied to the thread High School Fan is pushing in the front and sucking from the back.Isn't that 'sucking' by definition?
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weirdoguy reacted to Cerenkov's post in the thread High School Contradictions in the Distribution of Gamma-Ray Bursts with Like.
I'm sorry Line_112, but even though I see you cited me, I can't see any answer to any of my questions in this reply. Perhaps you didn't...
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weirdoguy reacted to wrobel's post in the thread Undergrad A high school physics problem demonstrating relative motion with Like.
I remembered a pretty high school problem from kinematics. But it seems it can help even undergraduates to develop their understanding...