petschge

12 ms·

91.
by petschge 5y ago
Except that interferometry at IR is still extremely hard.
92.
by petschge 5y ago
In that case these apps should be banned, not the use of "no ads" in titles.
93.
by petschge 5y ago
Not surprising given the quote "Amateurs talk about tactics, but professionals study logistics." by General Robert H. Barrow (then Commandant of the Marine Corps)
94.
by petschge 5y ago
Especially the Air Force should know better since the people doing the work for flying things are officers...
95.
by petschge 5y ago
Asking shouldn't be hard. (And I would start at the DSN people at JPL). But the answer might be "well, we have that binary. I think it was written in $deadlanguage. But I have never seen the source, don't know who wrote it an
96.
by petschge 5y ago
We are still getting science data from both Voyagers. So somebody somewhere has code to decode the bits.
97.
by petschge 5y ago
You don't need a cluster of HackRFs to see a single beacon. But the combination of several HackRFs does give you larger instantaneous bandwidth and the ability to track an individual beacon over a wider range of Doppler shifts and henc
98.
by petschge 5y ago
I have updated my laptop across 4 major releases of Debian now, never reformating the system. And the copy of my home directory (think user profile in windows) is even older. If you don't know what you are doing, saving a full system b
99.
YouTube is hiding comments mentioning “OpenStreetMap”(vimeo.com)
85 points by petschge 5y ago|14 comments
100.
by petschge 5y ago
Plants owners will always say that they analyzed their own plant being safe...
101.
by petschge 5y ago
How are droughts creating problems for solar?
102.
by petschge 5y ago
Awesome as always, but unfortunately from January 2014, not a new post by Dave Addey.
103.
by petschge 5y ago
I'd argue the top of the pyramid is actually formats such as HDF5. That format was started to store voyager data and we can still read it after more than 40 years. It makes the format of entries extremely clear ("this is an 3d arr
104.
by petschge 5y ago
This isn't (or shouldn't) be an age thing. It is a 'stage of learning" thing. If you are new to Linux (or even all Unices) and you want to get a firm understanding of the fundamentals, it may very well be worth while to
105.
by petschge 5y ago
Starlink barely works over a few hundred kilometers. Thanks to the inverse square law doing it over a few million kilometers is about 100 million times harder.
106.
by petschge 5y ago
French Guiana is where ESA launches rockets from. Anybody willing to bet if JWST is going to get a tiny little extra delay because the US can't get paperwork down there?
107.
by petschge 5y ago
Because the rules allow us to send out copies of the final article in "personal correspondence with other researchers" but limit upload to preprint servers (arxiv) and institutional repositories (our own website) to the last versi
108.
by petschge 5y ago
It's not so much a stand-in as the possibility to compute convolutions (and auto-correlation and cross-correlation) really easily and cheaply in Fourier space.
109.
by petschge 5y ago
The main warning against rolling your own crypto is because you would (or would be tempted to) replace standard crypto with it.
110.
by petschge 5y ago
Thunderbird works just fine.
111.
by petschge 5y ago
HPC still has a lot of Intel, because these systems run for ~5 years. But if I look at the Top500, there is systems with AMD Rome (and Milan and Naples). There is systems with IBM POWER9 (and POWER7) and the fastest system in the list is of
112.
by petschge 5y ago
You know that a language has horrible string handling if the C binding to the language are an improvement...
113.
by petschge 5y ago
Actually pretty easy to do with latex and hyperref. Has been fairly standard for scientific preprints on arxiv for a decade or more.
114.
by petschge 5y ago
Except after the second failure you have a REALLY hard time to get funding out of politicians...
115.
by petschge 5y ago
Papers are hardly outdated. But sure, having a reference implementation to go with it is good.
116.
by petschge 5y ago
Short answer: because none of them is the default in standard plotting tool. There is so many alternative that it is hard to know which replacement you should pick. If you pick the wrong one you are a moron, if you stick with the bad defaul
117.
by petschge 5y ago
Yes. I have had next-day on-site support for Thinkpads in Europa, South Africa and the US. For devices not necessarily purchased in that country. The only question I got was with a German Thinkpad in the US when the power brick failed: &quo
118.
by petschge 5y ago
Looks like you need to load matplotlib with import matplotlib.pyplot as plt
119.
by petschge 5y ago
Sure, but you need to ask for at least some things that you will likely not get. That give you some wiggle room while negotiating. If you start with compromise position you will get very little of what you want and mostly what the other par
120.
by petschge 5y ago
I know. But at the maximum rated current the voltage drop across the LED is going to be only marginally higher than the band gap. Definitely not 24 Volts. So the question becomes what do you do with the excess voltage. If you are smart you

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