Re: Someone's confused
I wonder how a corrected ranking would look if they separated South America from North America?
1396 publicly visible posts • joined 14 Dec 2009
I was wondering how this helicopter drone was tested. I read that it has been flown in a large vacuum chamber* (~600 Pa or ~ 6 mb at Mars' surface), but gravity is also lower on Mars and can't be conveniently simulated.
Apparently it can only fly for 90 seconds before it needs to spend a day recharging! I presume that that's about keeping its weight down. It's there as a proof of concept rather than as a tool.
*see https://www.nytimes.com/2020/06/23/science/mars-helicopter-nasa.html
When I was at school in the 60s, we were taught to use both the Imperial and the cgs (centimetre, gram and second) system. cgs: Inconsistent length versus inconsistent mass in SI. Our Science teachers advised us that SI (and global warming) was coming. My engineer father used to use slugs and poundals in his caculations. I have no idea what system they belonged to. SI was an easy to transition after cgs.
A cycling "cape" back then was a real cape: a bag tailored to fit over your head and extend over the handlebars and down your back. It would keep you much drier than a Goretex jacket in a downpour. However, you could get wet from upward splashes. Modern cyclists call thin, fitted, rain jackets capes. (Maybe it's a mistranslation from French or Italian?)
> a removable cell which is light enough, that we can take in and recharge overnight.
Or why not exchange it for a full cell at your nearest filling station?
Our government could mandate that all cars would use cells from a small range of shapes and sizes which were common to all car makes.
All hail Zappa, allright, but that's not the origin. It was written on the envelope that contained your credit or charge card statement, printed on a Hollerith card. You weren't supposed to damage it, because it would be reread when you sent it back with a cheque. Was Harvey Matusow the original cracker? Didn't he repunch his card to change his balance to a large positive value, withdraw the balance, then scarper from the USA with the cash?
International banking wasn't very international back then. I knew of a guy, the departing business partner of my neighbour in the 60s, who emigrated to Australia a couple of days after maxing out his Barclaycard with professional camera equipment bought on Oxford Steet (Dixons, maybe?). He was never chased for the balance.
I think we have evidence from countries like China (either one), Vietnam, Singapore, etc. that it is possible to rapidly build a first class industrial economy without colonies.
We can't produce enough food in this country, because we don't try. Our agricultural industry maximises profits not food production. I would guess that the WW2 productivity of allotments is still well ahead of current agribusiness.
What we need is a government made up of STEM experts and a supportive electorate. We would also need an entirely different model of management in our industries.
> If we ban Huawei then Western kit will be bought. At greater expense which will slow the rest of the economy
Ermm, no. If we buy Western kit, we're circulating money in the Western economy. Growth is all about circulating money, not sending it out of the economy.
I'm not Italian, but my experience is that Italy is one of the few places in the world where you can be sure that wherever you go, whether it be the street vendor at the 6 am fish market, or the Palazzo turned hotel at 3 pm, the coffee will be pleasantly drinkable and often divine. All you have to do is ask for "un caffè" and a perfect espresso will be delivered, I have no idea what you get if you ask for a Machiatto or an Americano, nor do I care. I just want the unsullied flavour of pure, fresh coffee.
Although I've got a fancy Pavoni machine somewhere, I find it best just to use a 1 cup "Moka" pot at home. Incidentally, you can make good coffee with nothing more than a small pan - surely less equipment than tea.
<rant>As for putting milk anywhere near coffee or tea, I don't understand why some adults are so keen on this calf food! The dairy industry is already dumping a lot of its waste into other food products, how long before it starts encouraging us to put whey into tea as well (anything that saves them the cost of tippng it down disused mines:) I am aware that with time, effort and experience milk can be converted into exquisite cheeses, but it seems that the dairy industry prefers a minute profit following a huge advertising budget </rant> Don't get me started on butter!
Maybe call it the "Quarter of a Billion Dollar Man" to account for inflation.
More interestingly, what is the liquid metal in the "wires"? Mercury? Gallium? Surely not Rubidium! The design is interesting, but how are they proposing to interface it with the rest of the brain? I think I'd prefer an external camera with a supercomputer that whispers in my ear: E.g. "Just to the right of you there's a really cute guy, they look interested." or "The coffee cup is on the table two inches in front of your middle finger." I think I could adapt to that, without having dangerous metals in my skull.
> .. but these days, at least one manufacturer has made the logo light up, thus wasting battery life.
Well, no. That's the backlight for the screen, lit up when the screen is in use . All you have to do is to make the lid transparent where you want the light to shine through.
> originally 100% proof alcohol was concentrated enough that black powder would still ignite if soaked in the stuff
It's not "% proof", just proof or degrees/° proof, 100% alcohol is 175°, that's 75° over proof.
> Oh for the days
It's still not difficult to make your own black powder, 'though you can't walk into a chemists' shop like I did as a kid and walk out with three twists of paper containing charcoal, potassium nitrate and flowers of sulphur.