gns24

9 ms·

31.
by gns24 6y ago
> Is it outrageous to think R0 could be 3.5 in NYC but 1.5 somewhere else? No, not at all. It would be outrageous to think that it doesn't vary by a factor of two IMO.
32.
by gns24 6y ago
I don't disagree that wearing masks seems a good idea, I'm just saying 70% reduction in particles doesn't map to a 70% reduction in transmissions. Whether the reduction is 10% or 90%, it's a useful contribution, particul
33.
by gns24 6y ago
A great explanation of a lot of things, but this looks wrong to me: "To put a number on it: surgical masks on the sick person reduce cold & flu viruses in aerosols by 70%. Reducing transmissions by 70% would be as large an impact a
34.
by gns24 6y ago
I'd been wondering why crowded public transport where people are breathing right next to one another hasn't caused massive spreading. This explanation makes a lot of sense - only when we cough or have to speak loudly do we exhale
35.
by gns24 6y ago
It's worth noting that the German study in Gangelt was done because it was considered a hot-spot - this wasn't an attempt to estimate the infection rate across the country. It does however demonstrate that even in places where lot
36.
by gns24 6y ago
It will sync email and other things so that everything is already downloaded when you wake it up. See https://support.apple.com/en-gb/HT204032
37.
by gns24 7y ago
Because if you're tested and it's positive you can tell everyone you came into contact that they need to isolate themselves too.
38.
by gns24 7y ago
Data? From what I've seen it's a little bit steadier, but not that much.
39.
by gns24 7y ago
> Heat lost to the water (maybe half of the energy input to compressed air) could be reclaimed as the pressure is released, with simple heat exchangers. Heat lost to the water is lost. If you want to try to avoid that you need to save th
40.
by gns24 7y ago
It's not quite as bad as that, as electricity is a more efficient fuel source for many applications, including heating if you have a heat pump and the cold side isn't a lot colder than your target temperature. For transport it&#x2
41.
by gns24 7y ago
The UK already taxes flights in a similar way. Whilst this does feel like progress, it would be much better to tax the fuel instead of the passengers. Virtually all other fuel is taxed, so it's strange that jet fuel is exempt. The pro
42.
by gns24 7y ago
Yes. This graph from "Sustainable Energy – without the hot air" is a good summary: http://www.withouthotair.com/c20/page_128.shtml
43.
by gns24 7y ago
People with also tell you that take-off burns most of the fuel. I think I read that the sweet-spot in terms of miles per unit fuel is about four hours. (Freight seems to go in roughly four-hour hops, I believe partly for that reason).
44.
by gns24 7y ago
The greenhouse effect does not require sunlight to work. What matters is how much of the energy radiated from the surface of the earth reaches space and how much is reflected back down. https://en.wikipedia.org/wiki/Gre
45.
by gns24 7y ago
This makes no sense to me. The article states that there is one frequency of radiation that will pass through the atmosphere, so the device radiates at that wavelength. But why would it make any difference? The atmosphere might reflect most
46.
by gns24 7y ago
Yes, I remember listening to the BBC radio ballads with interviews with men who'd worked in mining and heavy industry. These were genuine communities; pretty everyone you socialised with would be people you worked with. And there was a
47.
by gns24 8y ago
What dosage did you take?
48.
by gns24 8y ago
I don't see how believing it will all work out fine and not worrying is constructive, yet spreading fear (which might actually encourage people to act) is not.
49.
by gns24 8y ago
To be honest my rational view is that the situation is hopeless. We haven't even managed to stop global emissions increasing annually yet. That's the second derivative of temperature (even ignoring any feedback loops); the rate at
50.
by gns24 8y ago
The quote “Natural photosynthesis is not efficient because it has evolved merely to survive so it makes the bare minimum amount of energy needed – around 1-2 per cent of what it could potentially convert and store” makes no sense to me; pla
51.
by gns24 8y ago
Disasters are conceivable with ocean storage too. If a ship's anchor damaged the facility and caused the release of air, the rising air could well sink the ship.
52.
by gns24 8y ago
The 'rolling membrane' that they are proposing is described here: https://heindl-energy.com/technical-concept/engineering-chal...
53.
by gns24 8y ago
I had never heard of a sun-synchronous orbit before. Intuitively it shouldn't work; if you're orbiting the earth in a plane perpendicular to the sun now, then in three months' time you'd expect to have moved round and th
54.
by gns24 8y ago
It's worth remembering that this data is for January - April. Solar is going to have a much bigger contribution in the following four months. I don't know about wind patterns in the US, but in Europe the wind also tends to blow l
55.
by gns24 8y ago
Yup. The early MySQL developers spent a lot of time and effort making the install and setup process as fast and smooth as possible; a lot of people stuck with what they could get working first.
56.
by gns24 9y ago
Exactly. If we're storing the positional value into 64-bits then there must be some patterns of 64 inserts which don't fit. The decimal solution is really not bad. You could improve on it by not taking the midpoint between the two
57.
by gns24 9y ago
The more you optimise something, the more fragile it gets. So to make something antifragile, you have to make something far from optimal. That book really didn't inspire me like some of his earlier work.
58.
by gns24 9y ago
Offshore wind farms around the UK have capacity factors around 40%; the seas are certainly not always windy. Solar struggles to provide a significant amount of energy in winter. Wind tends to blow or not for a few days or more at a time - m
59.
by gns24 9y ago
Barnes Wallis developed some interesting designs in the early 50s: http://www.sirbarneswallis.com/Supersonics.htm
60.
by gns24 9y ago
French was the Lingua franca of the time and probably the principal language of Henry the Eight's court, so quite possibly not.

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