JWKennington

5 ms·

1.
by JWKennington 2y ago
Identity in physics can be challenging to find. We’re given a narrow set of labels to choose from, typically theorist or experimentalist, and these can often be time-dependent as we progress in our careers. Throughout my time in the discipl
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Using Namespaces with Git and SSH(locallytrivial.com)
2 points by JWKennington 3y ago|1 comments
3.
by JWKennington 3y ago
Recently had to reconcile multiple keys for similar git hosts, and found several posts that were nearly sufficient. Summarized the method that worked for me in terms of namespacing the ssh credentials, hope it’s useful if you find yourself
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Standing Up a Blog with Hugo(locallytrivial.com)
1 points by JWKennington 5y ago|0 comments
5.
by JWKennington 5y ago
Often in discussions about blackholes, the question arises of observer experience when falling into a blackhole. Due to the extreme tidal forces experienced along such a path, the observer would be stretched out - a process colloquially ref
6.
by JWKennington 6y ago
I first encountered a diagram of algebraic structures at the end of Jeevanjee's second chapter, "Vector Spaces", which elegantly summarizes the high-level differences in structure between sets, vector spaces, and inner produc
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Ladder of Algebraic Structures(jwkennington.com)
193 points by JWKennington 6y ago|56 comments
8.
by JWKennington 7y ago
I first encountered a diagram of algebraic structures at the end of Jeevanjee's second chapter, "Vector Spaces", which elegantly summarizes the high-level differences in structure between sets, vector spaces, and inner produc
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Ladder of Algebraic Structures(jwkennington.com)
3 points by JWKennington 7y ago|1 comments
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Loading Gravitational Wave Data in Python(jwkennington.com)
1 points by JWKennington 7y ago|0 comments
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by JWKennington 7y ago
I've cleaned up the last paragraph, and replaced my friend's reasoning with the term "momentum" to avoid confusion. thanks for feedback
12.
by JWKennington 7y ago
It was weird - I've reparaphrased that to be "momentum" now for improved clarity. thanks for feedback
13.
by JWKennington 7y ago
Photons have momentum. momentum is analogous to mass in special relativity (specifically, mass is the 0 component of the four-momentum)
14.
by JWKennington 7y ago
Hence I said my friend was being a bit “interpretive”. He really meant that though photons have zero rest mass, they nonzero inertial mass (E=mc^2)
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The Gravity of a Photon(jwkennington.com)
57 points by JWKennington 7y ago|86 comments
16.
by JWKennington 7y ago
I wrote a blog post describing the tensor product in terms of functional programming techniques in python https://jwkennington.com/blog/tensor-product-for-programmers... I would also be interested in a "math for p
17.
by JWKennington 7y ago
But how am I supposed to know that AB is one mathematical object here instead of the 2 separate objects A, B? My point is that there should be a graphical way other than "put them arbitrarily close" to link them together I prefer
18.
by JWKennington 7y ago
Slight nit-pick, but matrix multiplication is not exclusively a contraction, but rather a contraction on the tensor product of the two matrices. See the next paragraph for why this is concerning. I find this notation great for simple applic
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Erasing efficiently – finding the best chalk eraser(jwkennington.com)
3 points by JWKennington 7y ago|0 comments
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by JWKennington 7y ago
It’s exactly what it says on the can - a list of my favorite texts. You can get the books anywhere, not sure what you’re angry about. I’m in the process of reviewing each in depth, but haven’t gotten to many yet, though I do own all of them
21.
by JWKennington 7y ago
Good point - I’ll repost without the “show”. I figured that it was a list of texts, each of which can be “tried out”, but if - as you suggest - the criterion really only applies to code, then I’ll change the post Update: removed the “show”
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My favorite math and physics texts - a list(jwkennington.com)
3 points by JWKennington 7y ago|4 comments
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Tools of the trade – good implements for math and physics(jwkennington.com)
3 points by JWKennington 7y ago|1 comments
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Investigation into Tensor type (r, s) convention(jwkennington.com)
2 points by JWKennington 7y ago|0 comments
25.
by JWKennington 7y ago
I too am enamored with Hagoromo; however, I wasn't able to get any of the Japanese chalk. I have been using the South Korean produced Hagoromo and find it quite nice. How do you think the Japanese vs. South Korean produced chalks compa
26.
by JWKennington 7y ago
I had to explain tensor products to several of my developer friends and realized that they found the rigorous approach somewhat obstructive. When I recast the subject in terms of functional programming (specifically, the pattern of currying
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Show HN: Tensor product analogy – functional currying(jwkennington.com)
8 points by JWKennington 7y ago|2 comments
28.
by JWKennington 7y ago
I wanted to provide a different answer from many of those "glad I left" answers here. I sympathize with those "keep the physics brain alive" goals of other commenters. Physics undergrad (2015) with thesis in nonlinear dy