aj7

9 ms·

61.
by aj7 2y ago
Faster? It’s gotten slower! Significantly slower. Haven’t you noticed that modern jetliners don’t really even have swept back wings any more? The sweet spot for fuel efficiency is around 530mph for modern, very high bypass turbofan engi
62.
by aj7 2y ago
Physics PhD from Berkeley. If things are more or less equal, choose the private institution. Berkeley is still the most corrupt organization I’ve ever been associated with.
63.
by aj7 2y ago
No. In industry, the best salespersons are listeners and thinkers.
64.
by aj7 2y ago
In subfields of physics, and I suspect math, the submitter is never anonymous. These people talk at conferences, have a list of previous works, etc., and fields are highly specialized. So the reviewer knows with 50-95% certainty who he is r
65.
by aj7 2y ago
Pi 5: https://youtu.be/Qzz0P9yB2V4?si=8OrkmxJJSUfV547Y
66.
by aj7 2y ago
Plus a means or magnet arrangement to prevent tumbling. But it would be very dangerous getting in and out without special engineering.
67.
by aj7 2y ago
1. Beer glass has to be optimized for ruggedness when washed many times. 2. Beer glass needs to be optimized for manufacturing and packing cost. 3. Numerical modeling is reknown for making elaborate suggestions for 1% improvements.
68.
by aj7 2y ago
And then we lose communication with Europa Clipper.
69.
by aj7 2y ago
Folklore?
70.
by aj7 2y ago
Would be very interesting to study classical stress analysis in compositions of these shapes subject to external loads. Not to mention vibrational analysis and the forms of wave functions.
71.
I Booted full Linux on an Intel 4004(dmitry.gr)
10 points by aj7 2y ago|0 comments
72.
by aj7 2y ago
Remember names? Dogs have egos!!
73.
by aj7 2y ago
Serendipity on cruises, eh? The axiom of cruises is: You will never see these people again.
74.
by aj7 2y ago
I’m not as smooth as you.
75.
by aj7 2y ago
Took zero courage. Was in character. Now as an “upper-class” retiree— now there’s a tiny bit of imposter syndrome.
76.
by aj7 2y ago
Remarkably, Twitter had fake jobs for most of its history. Any new Stanford graduate in any field could have one.
77.
by aj7 2y ago
Very cool comment.
78.
by aj7 2y ago
I have a PhD in Physics from Berkeley. Still, in the strictest real estate sense, my best and highest use is as a dishwasher. I was managing a small optics factory in Livermore. We made laser mirrors to order there — any wavelength, any ref
79.
by aj7 2y ago
In 1966, we had one in the Stuyvesant HS computer room, along with an IBM 1130 system that ran Fortran 4. I got good at the Programma, it was quite useful. But I don’t recall 240 steps; I recall less than 100. Indeed, the much more advance
80.
by aj7 2y ago
Oh but I did. In the second sentence.
81.
by aj7 2y ago
The same reason that the ULA launch system costs more than SpaceX. Cronyism.
82.
by aj7 2y ago
Very skeptical of the thesis here. The practical limit is the sampling theorem and the bit resolution, not “computability.” It is possible that there are persons who can resolve a 25th bit or be disturbed by aliasing associated with the sam
83.
by aj7 2y ago
This is right. I’m an MIT physics SB. The undergraduate curriculum is pretty uniform across schools. A lot of our teachers were poor. But what was being taught, and is always taught at top schools, is mannerisms. What does an actual physici
84.
by aj7 2y ago
macOS is behind. And this is speaking as someone who probably owns one of everything Apple makes, Apple stock, and was exclusively Mac for the last 10 years. I have less than 50 hours use on my Windows 11 machine, a midgrade Lenovo P358 rig
85.
by aj7 2y ago
Crouch? When training technicians, the first thing is, you never ever bend your waist in the laser room, with lasers on. Your head never enters the plane of the laser beams. You do not put your ahead above the laser. You use a piece of copy
86.
by aj7 2y ago
Just for giggles, who owned Spectra-Physics at the time?
87.
by aj7 2y ago
The challenge, for historians of science, is to segregate Wolfram’s genuine accomplishments, which are considerable, from this stuff.
88.
by aj7 2y ago
Just got a Windows 11 machine. Had to, to run Solidworks. Have it next to a new M3 iMac. They’re all configured with the same apps. Despite not having used Windows in 10 years, these machines behave identically. But Windows 11 is snappier.
89.
by aj7 2y ago
That’s not large models “understanding physics.” Better, giving output “statistically consistent” with real physical measurements. And no one, to my knowledge, has yet succeeded in a general AI app that reverts to a deterministic calculati
90.
by aj7 2y ago
Use LabView as a calculation engine to do experiments. The advantage is you get system-like diagrams.

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