Pencilvester's latest activity
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Pencilvester replied to the thread Undergrad Convention for writing $\binom{1}{1}$ tensors in matrix form?.I’ve maintained this visual representation as well ever since learning about it in MTW! I can always visualize a vector as a 1-dimension... -
Pencilvester reacted to pervect's post in the thread Undergrad Convention for writing $\binom{1}{1}$ tensors in matrix form? with
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I don't know if this is standard, but I think of a vector, in tensor notation written as ##u^a## as a column vector in matrix notion... -
Pencilvester reacted to A.T.'s post in the thread High School Why is the constant speed of light so unique? with Like.
I find this comparison confusing: - For sound you talk about "moving relative to the wave". (Whatever that means) - For light you talk...
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Pencilvester replied to the thread High School Why is the constant speed of light so unique?.I was never disagreeing with the main point you were trying to make; I was only pointing out the minor mistake in your statement about...
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Pencilvester reacted to PeroK's post in the thread High School Why is the constant speed of light so unique? with Like.
In what way had that point not already been made (several times) by previous posters? @Pencilvester is not the OP!
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Pencilvester replied to the thread High School Why is the constant speed of light so unique?.This depends on the details of a given scenario and is not true in general, no? In the case of your extreme example, I could specify...