dhdc

9 ms·

31.
by dhdc 5y ago
5GHz actually has worse penetration and stronger attenuation over distance than 2.4GHz. Succesfully blocking 5GHz does not imply the same for 2.4GHz. However I do agree that it's probably still gonna work because the faraday cages on m
32.
by dhdc 5y ago
A live test would be quite dangerous if the microwave does leak EM.
33.
by dhdc 5y ago
Actually, this is not as stupid as it seems. I was first baffled by the idea that a website can read the RSSI of the device I'm on, then I realized its probably just measuring the latency by pinging every second.
34.
by dhdc 5y ago
Related: https://insights.sigasi.com/opinion/jan/verilogs-major-flaw/ This is why if you want complete determinism, use VHDL. Unlike verilog, VHDL was developped specifically for describing hardware behavior.
35.
by dhdc 5y ago
Before the 2000s or the Agilent spin-off, HP was the undisputed king in electronics test equipments. Their flagship multimeter HP3458a, launched more than 30 years ago, is still the standard in metrology. And Keysight (spin-off from Agilent
36.
by dhdc 5y ago
More importantly, because of the low-power requirement, LPDDR typically have better binned dies than DDR.
37.
by dhdc 5y ago
Be careful, this isn't something you should talk about/admit in public at all. Feds really don't like it when people mess around licensed bands.
38.
by dhdc 5y ago
Okay, but its not very useful is it? Sure, you can propagate the state vectors directly, but even tiny amount of noise may be amplified and can make the results useless. Also, read up on why Euler Method is bad for solving ODEs numericaly.
39.
by dhdc 5y ago
The actual power of Kalman filter lies in its ability to estimate states/variables that can't be measured directly, not just filtering time-series data. With Kalman filter, you not only get your output filtered, but along with the
40.
by dhdc 5y ago
Should add "Moskowitz" to title. Right now it looks like UC Berkeley's official statement.
41.
by dhdc 5y ago
Non-paywalled link: https://web.archive.org/web/20210701031117/https://www.newyo...
42.
by dhdc 5y ago
The article is over 4 years old.
43.
by dhdc 5y ago
Emphasis on bias. Though factual, the words used by the website are heavily loaded and clearly serve a purpose.
44.
by dhdc 5y ago
cough Advil cough Motrin cough Just because its an industry front doesn't mean it treats (take money from) all companies equally. And the fact it calls Tylenol out rather than its generic name acetaminophen just adds to this.
45.
by dhdc 5y ago
Reminder regarding the source: https://mediabiasfactcheck.com/american-council-on-science-a... Please read the *entire* report.
46.
by dhdc 5y ago
Speaking of evidences, do you know that underlined texts are clickable? Also, please kindly point out any biases in the article if you can.
47.
by dhdc 5y ago
Get that pseudoscience garbage out of here. https://www.mcgill.ca/oss/article/critical-thinking-pseudosc...
48.
Cantor's Attic(cantorsattic.info)
2 points by dhdc 5y ago|0 comments
49.
by dhdc 5y ago
If you just want to know if a usb cable can safely delivery a certain current, then a cheap multimeter might do. If you want to test whether a cable will work with a certain protocol at a certain data rate, just plug it in and see if it wor
50.
by dhdc 5y ago
Be careful though, ATX power supplies don't have a crucial feature that bench supplies do: setable current limits. They will pump out as much power as they can to maintain the output voltages until they saturates. Which can result from
51.
by dhdc 5y ago
I am pretty sure M.2 uses 3.3V exclusively, and depending on the implementation, RAM sometimes gets its power from down regulated 3.3V as well. Though you do have a good point, nobody misses -12V and -5V.
52.
by dhdc 5y ago
Probably non-existent since the thickness of insulation layer isn't controlled. Surprisingly, silicone rubber has a dielectric constant between 2 and 4 [1], which is pretty close to FR-4's 4.4. So maybe it isn't impossible? [
53.
by dhdc 5y ago
...which puts all the DC conversion on the motherboard. Honestly, I can't tell if this is a good thing or a bad thing. On the plus side, power supplies will be much simpler to design and test, with potentially better efficiencies. On t
54.
by dhdc 5y ago
Forever sitting in your wallet, because its an "investment" and cannot be spent normally?
55.
List of Unexplained Sounds(en.wikipedia.org)
2 points by dhdc 5y ago|0 comments
56.
by dhdc 5y ago
Just positive feedback loop. The term "positive" or "negative" refers to the effects of the feedback path on the overall system, a negative feedback loop attempts to negate any changes in the outputs, while a positive fe
57.
by dhdc 6y ago
I believe that is highly illegal in many countries. Here's what FCC has to say about jammers: https://www.fcc.gov/general/cell-phone-and-gps-jamming
58.
by dhdc 6y ago
From my very limited knowledge of physics, time crystals can theoretically oscillate forever without any excitation at their ground state, though laws of theromodynamics are not broken and energy cannot be extracted from their oscillations
59.
by dhdc 6y ago
The amount of astroturfing in the reddit thread is just awful. VPN hosters market in the most aggressive ways possible, probably due to the fact that its usually impossible to verify a VPN hoster's claims (without a breach), so assumin
60.
by dhdc 6y ago
Yes. In addition, wafer size is another important metric of fab capabilities aside from process node, since it roughly translates into production rate.

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