FactChecker's latest activity
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FactChecker reacted to Ibix's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with
Like.
I think it's also worth noting the existence of the so-called "one postulate" derivations of the Lorentz transforms, which only assume... -
FactChecker replied to the thread Undergrad Light clock treating horizontal and vertical motion differently?.IMO, it is false that the Michelson-Morley experiments were artificially designed to give the result supporting the postulate of a...
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FactChecker replied to the thread Undergrad Light clock treating horizontal and vertical motion differently?.Everything we believe boils down to acceptance of a set of postulates. In reality this may all be a dream of the Flying Spaghetti...
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FactChecker reacted to Dale's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
It isn’t relevant and it isn’t correct either. Some postulates are facts. Being a postulate doesn’t make something a fact, but it...
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FactChecker reacted to Janus's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
While a postulate is not a fact, it we can make predictions as what would happen if it were true. This, in turn allows us to devise real...
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FactChecker reacted to PeroK's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
Let's take that as your argument that physics generally is no good. So, what do we do? Get out the new-age crystals? Rely on ancient...
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FactChecker replied to the thread Undergrad A variant of the Monty Hall problem.I would state this a little differently. Small changes in the host's behavior completely change our best guess of the outcome. In a...
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FactChecker reacted to quintinmorrow Refer's post in the thread Undergrad A variant of the Monty Hall problem with Like.
Variants of the Monty Hall problem always mess with intuition at first. I remember thinking the probabilities should rebalance, but once...
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FactChecker replied to the thread Undergrad Light clock treating horizontal and vertical motion differently?.An inertial frame of reference is a mathematical construct to describe an undeniable physical fact. Anyone can feel acceleration...
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FactChecker replied to the thread Undergrad Light clock treating horizontal and vertical motion differently?.You're right, a postulate isn't necessarily a fact. This postulate was a way to explain experimental results. It is the simplest...
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FactChecker reacted to renormalize's post in the thread Can a flow created by a fan show an Edge effect when hitting a wall? with
Informative.
It's not difficult to find technical papers online that analyze 2D laminar flow around a rectangular cylinder. Here's one example picked... -
FactChecker replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.If a stream with circular symmetry hits a wall, the center of the stream will have a zero velocity at the wall. The symmetry allows no...
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FactChecker replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.The velocity at the center of impact with the wall is zero, so there is acceleration above zero around that. But it is another question...
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FactChecker replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.The term "edge effect" is used at 15:50 in this video. Here is that part of the transcript: the VX175 has a specially engineered...
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FactChecker replied to the thread Can a flow created by a fan show an Edge effect when hitting a wall?.I don't see any use of the term "edge effect" in this video.
