Spinnor's latest activity
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Spinnor reacted to DaveE's post in the thread How to measure the diameter of a shaft without a caliper? with
Like.
Maybe place the shaft on top of the best ruler you have and take a picture with your phone as perpendicular to the ruler as possible... -
Spinnor reacted to Roberto Pavani's post in the thread High School Tennis Balls in the Ocean with Like.
An equivalent way to see it: the sea level rise is the same as the water rise you'd observe when placing one tennis ball in a...
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Spinnor replied to the thread Undergrad Textbook description of R##\ddot{\text o}##mer's light speed calculation.Thinking about the data is what feels important to me. Lag is small at first because the separation changes slowly at first. Daily lag...
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Spinnor replied to the thread Undergrad Textbook description of R##\ddot{\text o}##mer's light speed calculation.Let the period be 2 days and take measurements for half a year. In that time Jupiter moved roughly 1/24 an orbit so in the half year we...
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Spinnor replied to the thread Undergrad Textbook description of R##\ddot{\text o}##mer's light speed calculation.Maybe it would be helpful to produce an imaginary data set. Let Io make one complete orbit in a nice round number, say 1 day or one week...
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Spinnor reacted to nicksauce's post in the thread Graduate How energy divided up in early Universe. with Like.
There's also a factor of 7/8 that comes into play: Ignoring internal states, the energy density of a relativistic species of fermions...
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Spinnor reacted to Chalnoth's post in the thread Graduate How energy divided up in early Universe. with Like.
Well, what happens in that sort of situation is that the entire system is thermalized: when you have temperatures far above the rest...
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Spinnor reacted to DaveC426913's post in the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box with Like.
6000+ exoplanets detected (1988+) Discovery of the Higgs Boson (2012) Accelerating Expansion of the Universe (1998/2011) Quantum...
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With a little searching (not using AI, cough, cough), it looks like the reference may be to many bar fights involving Marines taking...