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Oct
24
accepted understanding why inversion cannot be accomplished by a rigid change
Oct
24
comment understanding why inversion cannot be accomplished by a rigid change
first we know the improper rotation changes the handedness of the coordinate system. now, imagine a rigid body rotating about the origin. say there are initially some right handed set of coordinates fixed in the rigid body frame at t=0, and then we start rotating the rigid body about the origin of this coordinate system. There is simply not way you can rotate such that the handedness will change!! the rotation of a rigid body is completely defined by the euler angles and if you imagine any of these 3 rotations, there is no way to actually invert invert the axis by such a rotation.
Oct
24
comment understanding why inversion cannot be accomplished by a rigid change
an inversion is like a plane-reflection of a rigid body... without a rotation ( thus the handedness get's changed right?)
Oct
24
comment understanding why inversion cannot be accomplished by a rigid change
that has to do with certain molecules doing wierd quantum things ( NH3 does this supposedly) but I don't want to get into all that. supposedly NH3 can tunnel into it's left-handed state or something (i don't understand it classically so I'm not too sure)
Oct
24
awarded  Student
Oct
24
revised understanding why inversion cannot be accomplished by a rigid change
added 317 characters in body
Oct
24
comment understanding why inversion cannot be accomplished by a rigid change
if you look at the vector r = (1,0,0) maybe there is a way to explaon this with a simple example like that, i'm workin' on it right now...
Oct
24
asked understanding why inversion cannot be accomplished by a rigid change
Oct
23
comment should I take notes in class
this question is asking about note-taking for physicists, this is not a question about general note-taking in that sense it is on topic... I'm asking about physicists and their note taking practices ...
Oct
23
comment should I take notes in class
i see threads like "what does it take to be a top physicist?" and "how to study mathematics as a physicist?" i'm not sure how you can justify closing this and leaving those open ?? please add a a comment
Oct
23
comment should I take notes in class
how do i get reputation of 20?
Oct
23
comment should I take notes in class
they won't let me ask in physics chat because I don't have a reputation of 20 : (
Oct
23
revised should I take notes in class
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Oct
23
comment should I take notes in class
if this is innappropriate for this forum I understand, but I really would appreciate some advice on this topic
Oct
23
asked should I take notes in class
Oct
17
awarded  Teacher
Oct
17
revised Convert acceleration as a function of position to acceleration as a function of time?
added 109 characters in body
Oct
17
awarded  Editor
Oct
17
revised Convert acceleration as a function of position to acceleration as a function of time?
added 2 characters in body
Oct
17
answered Convert acceleration as a function of position to acceleration as a function of time?