infinet

5 ms·

31.
by infinet 10mo ago
I am interested in unit cost for mass production. It needs to be significantly cheaper than an old style top-loading washing machine to be affordable. The design of old style washing machine is mature and priced at around $100 for 8kg model
32.
by infinet 10mo ago
> the worst case is that we would have to ditch the space station (which is already planned in a few years) There is more than one Space Station up there. "Tianhe space station module conducted preventive collision avoidance due to
33.
by infinet 10mo ago
My apologies for the digression. But it reminds me a post I saw long time ago when a guy installed all the antivirus/antimalware software he could find on a Windows machine. It started an antivirus civil war and the Windows fell into a
34.
by infinet 10mo ago
I'd love to know more about Unicycling. Is it just my browser, or is anyone else seeing the huge black Q letter or magnifying glass icon that occupies 2/3 of the screen?
35.
by infinet 10mo ago
The article talks about fungi been attracted to ionising radiation. Per wikipedia: https://en.wikipedia.org/wiki/Ionizing_radiation Ionizing (or ionising) radiation is particle or photon that has enough energy to detac
36.
by infinet 10mo ago
There were similar comments on HN. The argument goes that since it takes energy to produce PV panels and wind turbines, China effectively is an energy exporting country. What’s even better is some of the PV and turbines are produced with re
37.
by infinet 10mo ago
That traditional biomass stove in paper's figures is perhaps the worst stove imaginable. Its efficiency could below 10%. Better designed stove has efficiency above 30% and has much less indoor air pollution. That being said, the more I
38.
by infinet 11mo ago
I used LLM to rewrite above comment to make it sounds less negative. Then I read those two chapters again. This book adds complexities to simple concepts. There are good math books for non-math majors, but this isn't one of them.
39.
by infinet 11mo ago
Another JPEG XR user is Zeiss. It saves both grayscale and color microscope images with JPEG XR compression in a container format. Zeiss also released a C++ library (libczi) using the reference JPEG XR implementation to read/write thes
40.
by infinet 11mo ago
Agreed. I really appreciate author’s effort and for releasing the PDF to the public. There are however areas I think could be made more helpful. In the chapter on Trigonometric Functions, it begins with discussion of the derivative of the e
41.
by infinet 11mo ago
Looks like farm land. Perhaps the land was assigned to individual in small pieces, and the individual get a portion of the harvest.
42.
by infinet 11mo ago
"Fourier was obsessed with heat, keeping his rooms uncomfortably hot for visitors, while also wearing a heavy coat himself." [1] [1]. The Fourier Transform and Its Applications. (Ronald Bracewell)
43.
by infinet 11mo ago
GP likely means defibrillator. EKG along won't save life and it requires training to read EKG. An AED has a built-in smart EKG that can identify shockable fibrillation. There is also automatic CPR machine that can do chest compression.
44.
by infinet 11mo ago
High voltage DC power line can transfer electricity over long distances with little loss. So it is preferable to build a nuclear power station far away from densely populated area. The proposed plan near my home was close to a lake, as comp
45.
by infinet 11mo ago
I was a huge fan of nuclear power, until I heard a plan to build one 50 km from my home.
46.
by infinet 11mo ago
To understand the significance of artificial skin, first consider all sorts of bad things that happen after deep burn. The dead tissue in a burn wound can release toxins and provide nutrients for bacteria to grow, which in turn can spread t
47.
by infinet 11mo ago
First impression from this list is that Russia has a lot of mathematicians! From the list, I have only read What is Mathematics? by Courant, which is a well-known and excellent book. I’d add Princeton Companion to Mathematics as a more
48.
by infinet 11mo ago
There were four: NS savannah (US): 1962 to 1971, too expensive to operate NS Mutsu (Japan): 1972 to 1992, neutron leak Otto Hahn (Germany): 1970 to 1982, converted to diesel power Sevmorput (Russian): 1988 to 2007, converted to wo
49.
by infinet 11mo ago
As much as we want the next generation ships with less CO2 emissions, that nuclear cargo ship is not coming anytime soon. It will use a Thorium melting salt reactor, which although not new, is still in experiment. US first proposed melting
50.
by infinet 11mo ago
Indeed, it's a very impressive speed. I have been on few ships of similar size as this sailboat. With their huge, extremely loud, hot, and diesel hunger engine they usually cruise at less than 15 knots. Container ships are outliers. N
51.
by infinet 11mo ago
Very interesting modification. Perhaps it can be an optional accessory. The Ludlum mode 3 is an amazingly steady instrument and looks like it can last forever. I only hope its user interface can be improved a little bit. It is not obvious h
52.
by infinet 11mo ago
Canada has an unique advantage in dealing with China that many don't realize or underestimate. Unlike many other countries, Canada holds a very special place for many Chinese people. Dr. Norman Bethune, who died during World War II whi
53.
by infinet 1y ago
Learning Emacs is easy, I have done it many times... Nowadays I open Emacs exclusively for magit. I only know perhaps less than 5 magit commands, however, even use it for staging changes is such a huge leap and its chunk staging is indispen
54.
by infinet 1y ago
Learning Chinese is not easy. That being said, one does not need to know Chinese in order to work with peers or business partners from China. For working in China, while knowing the local language is certainly an advantage, it is not a requ
55.
by infinet 1y ago
This is amazing! That HIFU 20 years ago used phase array to steer beam. Don't know the size of transducer. One of the tests I heard of was on a pig leg. The damage was bigger than expected, could be in the range of few centimeters, pro
56.
by infinet 1y ago
It's likely for Dutch. China exported 2414 metric tons of CeO2 in that period. The top 4 destinations are Netherlands (517 tons), Italy (438 tons), Japan (353 tons), USA (284 tons). So others can import it themselves just fine.
57.
by infinet 1y ago
There was a startup in Shanghai in the early 2000. Their device used multiple transducers. The probe was at least 40 cm in diameter. They did trials on uterine fibroids, among other diseases. One of the difficulties was while it looks good
58.
by infinet 1y ago
Netherlands imported more CeO2 (a rare earth) from China than any other country, with 517 metric tons during the first half of 2025.
59.
by infinet 1y ago
> Edit: I just rechecked China and wow! $0.08 per kWh. Can anyone confirm? Yes, it is in the ballpark of $0.08/kWh. It varies a little bit across regions. Also in some places the price is only half during the night. But as you consu
60.
by infinet 1y ago
Are the cleaning crews federal employees? Who is taking out the trash and maintaining the restrooms during the shutdown?

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