xavieralexandre

5 ms·

1.
by xavieralexandre 5mo ago
> They require a shielded room to increase the SNR. Not anymore. That is exactly the purpose of Darpa Ambient program: https://www.darpa.mil/research/programs/atomic-magnetometer-... Demo from 2022: https:&#x2
2.
by xavieralexandre 8mo ago
Thanks. I was mostly basing my answer on my experience with nautical charts, where declination corrections are typically uniform over relatively large areas and local anomalies are less of a concern. I hadn’t considered how much more variab
3.
by xavieralexandre 8mo ago
You are linking to the magnetic anomaly grid, which is primarily intended for geophysical research and modeling local variations. For a basic compass app, you can rely on the World Magnetic Model (WMM) instead: https://www.ncei.n
4.
Challenging evolutionary psychology myths about sugar and obesity(danielnettle.eu)
2 points by xavieralexandre 2y ago|0 comments
5.
by xavieralexandre 2y ago
Some types of glue absorb a lot of the laser energy. There are dedicated plywood optimized for laser cutting https://n-e-r-v-o-u-s.com/blog/?p=6042
6.
by xavieralexandre 2y ago
The article rightly points out the industrial impact of more powerful and compact lasers but I cannot wait for those PCSELs to reach the small workshop market. Having a cheap laser able to cut metal at home / small shops would be so us
7.
Nitter is over – Twitter blocked access to their network without a user account(nitter.cz)
6 points by xavieralexandre 3y ago|0 comments
8.
by xavieralexandre 3y ago
Most plywood is glued with phenolic glues whereas melamine glues will behave better with a laser: https://n-e-r-v-o-u-s.com/blog/?p=6042
9.
by xavieralexandre 3y ago
He also did a nice post about a machine he built to test Blackberry pagers' radio reception: https://woodgears.ca/misc/rotating_machine.html
10.
by xavieralexandre 3y ago
You are not forbidden at the Federal level to have fixed units. But many states do indeed requires a permit to install fixed units. And have strict regulations such as self producing half of the electricity required by the installation. Her
11.
by xavieralexandre 3y ago
It looks like someone took the "Never underestimate the bandwidth of a station wagon full of tapes hurtling down the highway" sneakernet idea literally.
12.
by xavieralexandre 4y ago
I love reading those articles about new materials. Since reading James Edward Gordon's The New Science of Strong Materials: Or Why You Don't Fall through the Floor ( https://press.princeton.edu/books/paperback&
13.
by xavieralexandre 4y ago
Also the planet could well become greener with global warming but the issue is the rate of change. Even if the new growing conditions were great for some crops, evolving our entire agriculture and food regimen to them in a few decades is a
14.
by xavieralexandre 5y ago
Steam bending was and is still used for mass-produced furniture: https://en.wikipedia.org/wiki/No._14_chair And there are also very interesting modern takes on bending wood such as compwood: http://compwood.
15.
by xavieralexandre 5y ago
I do it in practice! With light hills I climb at 25kph (Steeper hills, I can’t hit the limit), and go down at 30-35. Faster than the same length flat road along the lake.
16.
by xavieralexandre 5y ago
I’m currently renovating a house and we live with a single wood (pellet) stove for the whole building. Living in a 16C home is surprisingly fine but the worst part is indeed the cold bathroom in the morning.
17.
by xavieralexandre 5y ago
This reminds me of one of my favorite physics lessons in undergrad: classical mechanics are a limiting case of general relativity where v << c so that all terms with v/c can be neglected.
18.
by xavieralexandre 5y ago
Dig a few meters and your soil will be 13C, a great starting point for your heat pump.
19.
by xavieralexandre 5y ago
Wouldn’t you be able to have a heat floor heated by your wood? If wood is cheap where you live heating water with it is a nice upgrade from a basic wood stove.
20.
Stompenberg FX: Testing guitar effects pedal remotely(thomann.de)
16 points by xavieralexandre 6y ago|2 comments
21.
by xavieralexandre 6y ago
The fact that each link is accompanied by a quick summary is a nice touch. I wish more newsletters and link lists would do this. http://www.pointer.io/archives/
22.
by xavieralexandre 6y ago
Technically there is a mass of cold air that comes out of the fridge when you open the door. Keeping the door shot keeps this mass of air inside.
23.
by xavieralexandre 6y ago
I expect bike and component prices to go down with wider adoption. Especially e-bikes. I was for example surprised to see that on my kids-towing e-bike in a hilly city I have to change front-disc-brakes pads approximately every 1'000km
24.
by xavieralexandre 6y ago
I'm wondering if a workable idea would be instead of having pedestrian paths and bike lanes and wondering where new kind of vehicles should go to have different tiers of lane with different speed and weight limits. For exemple: * <
25.
On Contact Tracing and Hardware Tokens(bunniestudios.com)
2 points by xavieralexandre 6y ago|0 comments
26.
by xavieralexandre 6y ago
From a taxation point of view I'm under the impression that for a country such as France for example seniors are gonna get _on average_ way more benefits during their pension than the equivalent of their lifetime contribution. Mainly d
27.
by xavieralexandre 6y ago
I like the Illy [1] book on the subject. It is mainly about Italian espresso though and less representative of 3rd wave brewing. [1] https://www.elsevier.com/books/espresso-coffee/illy/978-0-12...
28.
by xavieralexandre 6y ago
Decent Espresso makes a great machine to control espresso brewing parameters [1] My favorite feature is the ability to give it different target curves to follow for different parameters during successive phases of the extraction. You can fo
29.
Group Testing against Covid-19 [pdf](gossner.me)
1 points by xavieralexandre 6y ago|0 comments
30.
by xavieralexandre 7y ago
> The costs of nuclear power have never appropriately included the costs of disposal and handling of wastes Of course, they do: - Hinkley Point: http://www.world-nuclear-news.org/NP-Hinkley-Point-C-contrac... - France [F

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