thirdhaf

28 ms·

1.
by thirdhaf 2mo ago
My assumption is it's referring to mathematical tables and the historical makers of them. https://en.wikipedia.org/wiki/Mathematical_table
2.
by thirdhaf 1y ago
As a quick and dirty rule of thumb measuring parts per million in anything except time or frequency will get expensive. Temperature drifts will cause expansions and contractions on that order if you’re measuring lengths.
3.
by thirdhaf 2y ago
Yes fun story, Jack was an assistant signalman and got paid for the job, partially in beer! https://en.m.wikipedia.org/wiki/Jack_(baboon)
4.
by thirdhaf 2y ago
By 1870 pi was known to several hundred decimal digits, for something like this calculation where you have other large sources of error Archimedes approximation from 2 millennia earlier would probably be fine. (<1% error) https:/&#
5.
by thirdhaf 2y ago
Oxide makes a rack-scale computer called the Oxide Computer, here's the intro page: https://docs.oxide.computer/guides/introduction
6.
by thirdhaf 2y ago
That phrase distinguishes the internal group responsible for that part of the architecture, don’t think it’s a marketing term.
7.
by thirdhaf 2y ago
Could have been Earl Muntz, who was in the TV manufacturing business, learned about this from one of Bob Pease’ columns. https://www.electronicdesign.com/technologies/industrial/boa...
8.
by thirdhaf 3y ago
The explanation is really well done, it captures the essence of the Pauli exclusion principle without delving too deeply into the weeds. In my opinion the best part of the video is the explanation of the "hole" quasiparticle at 6:
9.
by thirdhaf 3y ago
NREL has a great visualization for the research cell (as opposed to module) side of things here: https://www.nrel.gov/pv/cell-efficiency.html
10.
by thirdhaf 3y ago
Funny story, that demo only exists because the designer was mis-categorized as a software engineer after an acquisition by Apple. After nearly getting the person in question fired it ultimately resulted in a successful job category change f
11.
by thirdhaf 3y ago
Was it this one perhaps? https://news.ycombinator.com/item?id=7261003
12.
by thirdhaf 5y ago
From the paper it looks like most of the interesting work with the laser and optical train use an external board to recreate the feedback and control circuitry already present and required for normal operation in a DVD/BluRay drive. It
13.
by thirdhaf 5y ago
Neat hack, but why would you want a fan on the internet?
14.
by thirdhaf 6y ago
There's an episode of James Burke's Connections that explores this idea with a bit of depth, I recommend watching the whole series if you have the time. James Burke Connections, Ep. 4 "Faith in Numbers"
15.
by thirdhaf 7y ago
With regards to how you locate it, the paper proposes looking at existing data from FERMILAT, a gamma ray telescope which could possibly pick up anihilations from a dark matter cloud surrounding such a black hole. Since the object itself is
16.
by thirdhaf 9y ago
Arecibo is and has been used for radar astronomy as well https://en.m.wikipedia.org/wiki/Radar_astronomy
17.
by thirdhaf 10y ago
You can use the phenomenon of negative differential resistance to improve the design of some very common circuit elements. For example you can move from a classic six transistor SRAM cell to a two transistor design. It's a bit dense re
18.
by thirdhaf 10y ago
This is a pretty thorough description of generation, not just the classification problem that is the usual introduction to machine learning. I just loved the map of the generated place names [1] the illustrations are hilarious. [1] http:&#
19.
by thirdhaf 14y ago
Link to the other HN thread on this topic: https://news.ycombinator.com/item?id=5391667 If the comments are to be believed someone's already lost their job over this.
20.
by thirdhaf 14y ago
Unless the planets happen to orbit very stable stars in the plane that sometimes puts them between earth and their star. With Kepler and some earth-bound telescopes you can discern the brightness dips from these and sometimes glean minimal
21.
by thirdhaf 14y ago
I use Better Touch Tool [1] which is mostly about expanding defaults for multitouch gestures. I haven't gotten around to using the Better Snap tool which focuses on window management yet. [1] http://blog.boastr.net/
22.
by thirdhaf 14y ago
That's exactly the application they're after. When these discussions happen I like to calculate some hard systems numbers since they're rarely in either the literature or the popular science articles. All the power available naturally comes
23.
by thirdhaf 14y ago
Trace amounts perhaps. Generally speaking radiative heat scales as T^4 where your temperature is measured on an absolute scale like Kelvin. In addition most of the heat flux being radiated by a human falls in the the 10um range which is som
24.
by thirdhaf 14y ago
If you want to implement it in a general way you still need to know how javascript supports closures though.
25.
by thirdhaf 14y ago
Completely agreed about 44.1kHz being a sampling rate. To make the rest of the numbers nicer I'm going to pretend we're talking about 40kHz sampling for the rest of this comment. It's clear that you can't distinguish between a 0-degree phas
26.
by thirdhaf 14y ago
Assuming 44.1kHz sampling rate the smallest path length difference between the ears is approximately 6.8mm. This corresponds to 2.3 degrees (with sounds source at infinity). Humans can place sounds with about 3 degrees of resolution so unle
27.
by thirdhaf 14y ago
Zero loss is only true for DC transmission. It's true, loss is lower than copper at 50-60Hz AC but radiative losses don't magically disappear. You're also limited in how much current you can carry since superconductivity breaks down in suff
28.
by thirdhaf 14y ago
This sounds suspiciously like what one of my friends did about twelve years ago for our freshman engineering project. Granted I believe these mice were more like $50 back then. See the 21 Aug comment here as proof that I'm not hallucinating
29.
by thirdhaf 14y ago
In a strange way I sort of did this with my EE and math degrees. I did draw the line at the Hartree-Fock approximation for doing ab-initio band structure calculations for silicon though so there's still room at the bottom for me. Since then
30.
by thirdhaf 14y ago
I'm sure part of the issue was that I was trying to teach myself Labview under a deadline as a fresh college grad with zero oversight from anyone with experience with it.

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