Sagittarius A-Star's latest activity
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Sagittarius A-Star reacted to A.T.'s post in the thread Undergrad Axial angular momentum calculation with
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Using the wedge product (bi-vector) instead of the cross product (pseudo-vector) avoids the issues pseudo-vectors have under mirror... -
Sagittarius A-Star replied to the thread Undergrad Axial angular momentum calculation.Yes. In this case, the cross product must be replaced by the wedge product. ##\mathbf L = \mathbf r \wedge \mathbf p##
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Sagittarius A-Star reacted to cianfa72's post in the thread Undergrad Axial angular momentum calculation with Like.
Better, I'd say the angular momentum is a bi-vector -- https://en.wikipedia.org/wiki/Angular_momentum
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Sagittarius A-Star reacted to A.T.'s post in the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit? with Like.
Another potential reason: Gyroscopes use only electric energy, which can be obtained via solar panels. For thrusters you would need to...
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Sagittarius A-Star replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.They try to avoid the use of thrusters and use control moment gyroscopes most of the time, to not disturbe micro-gravity experiments...
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Sagittarius A-Star reacted to pervect's post in the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit? with Like.
As far as I know, this is just due to the ISS being deliberately locked to a constant orientation relative to the Earth, for practical...
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Sagittarius A-Star replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.The gyroscope in the video is spinning about it's axis (even while it's housing is not spinning), but it is difficult to see. How this...
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Sagittarius A-Star replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.It's the ISS, which rotated, not the gyroscope axis: Source...
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Sagittarius A-Star replied to the thread Undergrad Is this another "paradox" or a veritasium mistake?.In theses notes is also mentioned, that Johann Georg von Soldner calculated the gravitational deflection of light as it passes the sun...
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Sagittarius A-Star reacted to PeterDonis's post in the thread Undergrad Is this another "paradox" or a veritasium mistake? with Like.
To be more precise: the global bending of light when passing close by a massive object, i.e., the angle between its incoming path at...
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Sagittarius A-Star reacted to pervect's post in the thread Undergrad Is this another "paradox" or a veritasium mistake? with Like.
It would be bent twice as much by a mass. But I don't think not on an elevator. I don't have a reference for this statement, but I...