jonsen

89 ms·

421.
by jonsen 6y ago
Substantially more than 5kg of hydrogen went up in flames with the Hindenburg, but I don’t think anything was wiped off the map there. Do you have any reference to the actual danger of stored hydrogen?
422.
by jonsen 6y ago
“Hydrogen needs a bit more work” for use in gas turbines, but it is something Rolls-Royce is examining, along with electric.
423.
by jonsen 6y ago
It seems like you are not aware of existing production of hydrogen cars: https://en.m.wikipedia.org/wiki/Toyota_Mirai
424.
by jonsen 6y ago
If the inputs are equal, low/low or high/high, the transistors are closed and the resistor will pull the output high. If one input is low and the other high one of the transistors will open and pull the output low.
425.
by jonsen 6y ago
Can I buy one? Hopefully in the near future! We are working towards a public launch now; please Sign up for our mailing list if you would like to receive updates as we get further along.
426.
by jonsen 6y ago
It clearly says “September 1998” on the front page and “1998 edition ...” after the preface. 2013 could be the year it’s archived?
427.
by jonsen 6y ago
Are there any other areas of maths being taught wrong on this sort of scale? An online video course could be some scale. I once saw a video lesson on the Pythagorean theorem: Drawing a right-angled triangle, marking the hypothenuse with t
428.
by jonsen 6y ago
To compare you would have to implement carry-lookahead in software. How would you do that?
429.
by jonsen 6y ago
Were you forced to comply against your will?
430.
by jonsen 6y ago
What do you mean by “”standard””? Is introducing an unknown and solving an equation for that unknown to calculate a percentage a kind of standard?
431.
by jonsen 6y ago
30% of 410 = 30/100*410 = 30*410/100 = 12300/100 = 123 How is this “not easy”? I mean, this should be as easy as any percentage calculation of this kind. Edit: Ah, you think the kid would find it difficult. My p
432.
by jonsen 6y ago
Shortcuts and insightful tricks should of course be encouraged, but learning a standard way of translating assignments into a basic arithmetic reduction would support the notion that it is all numbers of the same kind which can be handled w
433.
by jonsen 6y ago
The rewriting here is called “program inversion” in Jackson structured programming : https://en.m.wikipedia.org/wiki/Jackson_structured_programmi... The wiki article just hints about using coroutines under certain cir
434.
by jonsen 6y ago
The first time I met it many years ago: The quick brown fox jumped over the lazy dog’s back.
435.
by jonsen 6y ago
Edited away. (This comment was made before realizing an unfortunate context)
436.
by jonsen 6y ago
The point is if Monty knows he’s going to reveal a goat or if he just does so by chance.
437.
by jonsen 6y ago
I pick 333 doors, and Monty opens 333 doors?
438.
by jonsen 6y ago
What’s the theory to accept for 1+2?
439.
Regnecentralen(en.wikipedia.org)
1 points by jonsen 6y ago|0 comments
440.
by jonsen 6y ago
Or 1 - 9/10 - 9/100 - ... or 1 - ( 9/10 + 9/100 + ... ) So it becomes circular: 0.00...1 = 1 - 0.999... (In math a series is a sum: https://en.m.wikipedia.org/wiki/Series_(mathe
441.
by jonsen 6y ago
The first is an infinite series: 9/10 + 9/100 + 9/1000 + ... + 9/10^n + ... The second is not?!
442.
by jonsen 6y ago
This is not an infinite decimal. The digit 1 is somewhere out there.
443.
by jonsen 7y ago
The Soul of a New Machine: https://en.m.wikipedia.org/wiki/The_Soul_of_a_New_Machine
444.
by jonsen 7y ago
This is due to the (extremely) limited capacity of consciousness. It is only able to handle a window of a few seconds.
445.
by jonsen 7y ago
The Intelligent Man’s Guide to Science
446.
by jonsen 7y ago
Yeah, it’s a giant mess.
447.
by jonsen 7y ago
There’s a substantial number of big passenger ships cruising the seas. One would think this was a solved problem.
448.
by jonsen 7y ago
Stealth.
449.
by jonsen 7y ago
Dad’s dad is my guess.
450.
by jonsen 7y ago
>a book unread is a valuable resource wasted “Unread Books Are More Valuable to Our Lives than Read Ones”: https://www.brainpickings.org/2015/03/24/umberto-eco-antilib...

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