tomsto

8 ms·

1.
by tomsto 2mo ago
Human financial advice is surprisingly bad.
2.
Kitten Space Agency pre-alpha release(ahwoo.com)
5 points by tomsto 10mo ago|0 comments
3.
by tomsto 1y ago
In defence of the black cab, if there is any sort of surge pricing in Uber, the black cab is typically cheaper if you can find one. Apps like Gett solve the ‘not knowing the price upfront’ problem, prebooking and hailing. I think black cabs
4.
by tomsto 1y ago
Emphatically so, yes
5.
Lower risk of dementia with AS01-adjuvanted vaccination(nature.com)
5 points by tomsto 1y ago|2 comments
6.
by tomsto 1y ago
AS01-adjuvanted shingles (herpes zoster) vaccination is associated with a lower risk of dementia, but the underlying mechanisms are unclear. In propensity-score matched cohort studies with 436,788 individuals, both the AS01-adjuvanted shing
7.
by tomsto 1y ago
This is a really interesting idea and the unit economics are great. However when I researched this (or rather Gemini 2.5 Pro researched this) the problem appears that Haber-Bosch produces ammonia, whereas Birkeland-Eyde produces nitrate, wh
8.
by tomsto 2y ago
Yes. In the UK at least. https://thewaterprofessor.com/blogs/articles/lead-pipes
9.
by tomsto 2y ago
Hydrocarbons are great for energy density, but gas turbines are brilliant for power density. That's why we need them (and syn fuels)
10.
by tomsto 3y ago
I may be being dense, and I realise this is a meta analysis, but the abstract doesn’t explain how much fibre one needs to eat to reduce all-cause mortality by the amount they claim?
11.
by tomsto 3y ago
Thanks. I would still be curious to know how the strength of an artificial magnetic field at a range of say 10 km compares to the order of magnitude of local variations they are talking about in the earth’s magnetic field.
12.
by tomsto 3y ago
Very interesting, and amazing technology. But… How is it unjammable? Couldn’t you just generate a big magnetic field?
13.
by tomsto 3y ago
Agree. My mother had a very serious form of cancer (she’s luckily responded well to treatment) but she was overwhelmed by con men promising hope. Adding legitimate research makes this mix less toxic, not more
14.
by tomsto 4y ago
They lost me at ‘amperage’
15.
by tomsto 4y ago
This. I wonder if a big part of the problem is that depression and other mental illnesses are slightly unusual in that they are categorised based on symptoms rather than underlying biology, which are poorly understood. As a diagnosis it’s a
16.
by tomsto 4y ago
Disagree. Firstly there aren’t many situations in fluid dynamics where there is a steady constraint on mass flow. Velocity just increases. (The exception is choked flow from a nozzle IIRC) Now think about what happens when 6000 people/
17.
by tomsto 4y ago
In the UK, I really like Which. You have to subscribe but the incentives are right, rather than a load of affiliate-driven stuff. https://which.co.uk/
18.
by tomsto 5y ago
However what does detract from this point somewhat is that this neglects relative purchasing power. At purchasing power parity, Russia's military spending is actually higher than perhaps people realise.
19.
by tomsto 5y ago
It’s a fun fact but I’d challenge whether it was the case in Anglo-Saxon education. Do you have a source? The Anglo-Saxons definitely had an early ampersand. I don’t know of any source where they give it a name. It’s still plausible they re
20.
by tomsto 5y ago
This sounds interesting. You sound like you work in nuclear physics. Please can you explain, or link to an explanation of, divertor (sic?) and strike point materials?
21.
by tomsto 5y ago
For a symmetric aerofoil, 0 angle of attack is 0 lift. For an asymmetric - there is (some) lift, which comes entirely from the suction side. https://www.wolframalpha.com/input/?i=NACA+6409+airfoil&assu...
22.
by tomsto 5y ago
For anyone who’s ever tried building a robotic bird, there is a lot more intricacy to how birds fly than just “pushing air”. A better article might have been, ‘we still don’t understand how certain species of bird fly so efficiently’
23.
by tomsto 5y ago
I’m not sure I fully agree. Do you not get this trailing edge vortex with an asymmetrical aerofoil at 0 angle of attack? (Just less strongly because less pressure difference between suction and pressure sides)
24.
by tomsto 5y ago
This is not how it works, no falling or positive angle of attack is required for an asymmetrical aerofoil. Imagine swinging a bucket of water over your head - the force your arm feels is similar to what the top surface of the wing feels.
25.
by tomsto 5y ago
This is true of a symmetrical aerofoil (e.g. most helicopters) but not for an asymmetrical aerofoil (most fixed wing aircraft). It is true that a slightly positive angle of attack generates more lift than none (because the pressure/low
26.
by tomsto 5y ago
Kind of. Actually the real ‘cause’ in my understanding is 1) the curved geometry of the suction (upper) side of the aerofoil and 2) the fact that the flow remains attached to it. Everything else - you can actually approximate the curved sur
27.
by tomsto 5y ago
This is how it works in the U.K. The MHRA decides which drugs are safe and effective and for which diagnoses. Then NICE decides which of those drugs are available on the public health system (NHS) by evaluating £/quality-adjusted life
28.
by tomsto 5y ago
You're right, I've done a bit more research into this. The company in question (Ubitricity) are uprating lampposts to 25A single phase at 240V, so 6 kW per post. Even though sodium (and earlier flourescent) lighting never used any
29.
by tomsto 5y ago
I don’t know whether on-street parking is as common in the US as it is in Europe, but the solution being quite widely adopted in the UK is to utilise the “leftover” current from when street lighting was converted from sodium to LED to retro
30.
by tomsto 5y ago
Interesting tangent, but I believe this is also a slavic surname and is anglicised as Nimitz. And before you know it you have an aircraft carrier called USS Mute.

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