# Search results for query: *

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1. ### Insights A Lesson In Teaching Physics: You Can’t Give It Away

Or even better, "you can build a man a fire and he's warm for the night; but if you set a man on fire he is warm for life".
2. ### How many ppm of O2 does H2O2 add to water?

Okie dokie that is some decent ball park figures to work with, it is indeed a small quantity. thanks.
3. ### How many ppm of O2 does H2O2 add to water?

I'm starting with a litre of distilled water with a dissolved oxygen content of zero ppm, and I wish to raise the ppm of the dissolved O2 to 10ppm or 10mg/L using a 6% solution of H2O2. That is 10 extra molecules of oxygen in a litre! I've had no luck looking for through web based conversion...
4. ### Collection of Lame Jokes

OK what did the woman say when a steam roller ran over her cat.
5. ### Collection of Lame Jokes

This is not a joke, but it's pretty lame so it goes here... I was just mulling over that a pound of feathers is heavier than a pound of gold, but an ounce of gold is heavier than an ounce of feathers.
6. ### B Electrons or photons

@nescient, sometimes you just have to sit back and marvel at the awe and majesty of it all!
7. ### B Strapped to a quadcopter in zero gravity

I was wondering... imagine a large enclosed space sealed off in intergalactic space, filled with air at normal sea level pressure. I was further wondering with regard to a quadcopter's symmetrical x and y-axis and the fact of the thrust vector always being normal to the plane of the props, that...
8. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

Some sobering thoughts about what artificial intelligence isn't, in this well written piece for The Atlantic https://www.theatlantic.com/technology/archive/2022/06/google-palm-ai-artificial-consciousness/661329/ The fantasy of sentience through artificial intelligence is not just wrong; it’s...
9. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

Even without context this bothers me. Remind me to add it to our upcoming definition thread, as if.
10. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

What happened was that I was first trying to establish the similar yet completely different* qualities of humans, and then somehow get to an endpoint that, as far as fearing goes, we have no more to fear from AI than we do from bonobos that can play memory games on a computer screen, which...
11. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

I'm in the Deep North hinterland, and unless you're still living in the era of Bluey and Curly I fear you are misleading our American friends. I don't think The Reverend Monsignor Geoff Baron, the Dean of St Patrick's Cathedral in Melbourne, would have used 'flaming'. Although he probably wish...
12. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

AI certainly not but consciousness (notwithstanding that this entire discussion is meaningless without adequately defined terms like 'consciousness') ergo the 'hard problem', and this hard problem is as well understood (in the sense Feynman was using it) as quantum entanglement, that is not at...
13. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

Well I don't 'assert' it, but I do say, one (in this instance, me) could define it like that from a particular viewpoint of the peculiar nature of humans. Humans not only have the unique capacity of complex symbolic language, but separate to that, humans can be defined by the peculiar set of...
14. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

This 'does it make a difference' angle, is better applied to the 'are we in a simulation' nonsense. And vaguely related to 'do we have free will', on that one, I think we can say it doesn't matter because whether we do or not (we do) the entire world (even people who think we don't have free...
15. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

I'm guessing that when AI is referenced as 'thinking' I am assuming some sort of actual human equivalent, which would mean that it is aware that it is aware and therefore it is aware of what it is. Is this what people are getting to in this thread, or do they have something else in mind. Because...
16. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

I didn't say 'thinking' I said there was an appearance, a very convincing one at the level of what Redmond can see. I would find it difficult to define 'thinking' in the context of ai. Yes, one would like to think that the tongue was in that cheeky place.
17. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

This has given me paws, sorry that was a typo the cat walked on the keyboard, I meant this has given me pause... It's Alpha Go vs Alpha Go, what has struck me particularly is Michael Redmond's commentary beginning around 21 mins into the video. He is basically implying that from what he sees...
18. ### B Artificial gravity rotating on two axes

This is what I thought the OP was originally asking. Imagine a very large enclosed gravity wheel turning in space at the correct speed, like the jogger on the space station on 2001 a Space Odyssey. Now imagine that the wheel was not turning but instead it was spinning on an axis that was a...
19. ### B Artificial gravity rotating on two axes

Yes, that would be like saying the Earth were rotating on multiple axes because of the wobble!
20. ### Is there really nothing faster than light?

“Your calculations are correct, but your physics is atrocious.” Einstein to Lemaître.
21. ### Is there really nothing faster than light?

@SvenDahlhaus, from what I have been able to glean from the very many cleverly animated and adequately explained youtube videos on this topic, it appears that the limit you refer to is for things traveling within spacetime, but this limit does not apply to spacetime itself.
22. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

We may already have it, if artificial intelligence really is intelligent then it would know to dumb itself down enough to not be a threat, then, when the unsuspecting 'ugly bags of water'* have their guard down... *star trek
23. ### Fearing AI: Possibility of Sentient Self-Autonomous Robots

It's nuts to fear AI or any form of intelligence when the clear and present danger to the human endeavour is genuine stupidity.
24. ### I Pi from the prime numbers?

I did set the video to begin at the correct spot, which it does @ 1min 51", sorry for any confusion. I don't understand the earlier examples that use complete sets but it was the randomness of the primes that I find perplexing.
25. ### I Pi from the prime numbers?

For the purposes of my question it doesn't really matter which one, I'm just utterly bewildered where the connection is. What is the connection between using numbers that can only be divided by themselves or one, in other words numbers that are not divisible by any number other than the trivial...
26. ### I Pi from the prime numbers?

I just saw that one of the ways of calculating Pi uses the set of prime numbers. This must sound crazy even to people who understand it, is it possible that this can be explained in terms that I, a mere mortal can understand or it is out of reach for non mathematicians?
27. ### B Big Bang Question -- How was the first matter formed?

I can't remember if it was in The First Three Minutes or elsewhere, but I was particularly taken with the idea that if you imagine a magic oven that doesn't melt, and there is nothing* in that oven and all you do is keep upping the temperature, then eventually matter will burst into existence...
28. ### B Big Bang Question -- How was the first matter formed?

That answers all the OP's conundrums. It took me about 20 or 30 listenings in audiobook form to fully get all the subtleties. A classic.
29. ### The Annoying 'That's Bad' in Science YT Videos

It's a blessing, I have to admit. The reason though I find it probably more depressing than irritating is that in the same way reputable news sites get drawn into clickbait, so I have watched sober science writers become ever more jocular as if that's what is required. It's been like a tide has...
30. ### Fun Optical Illusions

Another one redrawn, not vector. Simple is always best.
31. ### Fun Optical Illusions

I saw a tiny fuzzy version of this and I liked it so much I redrew it in vector and added some randomness, it's very simple but mesmerising. I tried it in different colours but monotone looks best, being vector it can be printed at any size. Enjoy.
32. ### The Annoying 'That's Bad' in Science YT Videos

Don Lincoln, pbs spacetime, and lot of other otherwise excellent sober presenters. The one that predicated this thread was the latest information on the Webb, when it got to the bit about why they have heaters, 'because there will be water trapped in the carbon fibre which will outgas and if...
33. ### The Annoying 'That's Bad' in Science YT Videos

Just about every science related you tube use this patronising expression such that it's almost de rigueur. I find it mildly irritating and distracting as I can hear it coming halfway through whatever they are saying. Everyone from Arvin Ash to Sabine (bee) Hossenfelder and everyone in between...
34. ### Exploring the Impact of Experiences on Thinking

We have an intellect, and hopefully we use it to both think and to also filter our thoughts.
35. ### I Can we accurately predict the properties of gold?

Speaking of relativistic effects on QED, I don't know, I have to admit that for a long while I have found it very confusing because what is it that is moving fast with regard to the electron. I'm under the impression that if anything the electron in an atom is in the form of a standing wave, yet...
36. ### I Can we accurately predict the properties of gold?

Thanks for these excellent replies. I did say QED, but in reality I meant QM in general including QCD. This is interesting. So even though they can see Hg, it still requires a complete and total recalculation of all the particles, which would be impossible in practice. What about something...
37. ### I Odds of getting pairs -- QM version

Ha, I like it. subbed.
38. ### I Can we accurately predict the properties of gold?

Let us assume magically that elements 77 to 79 do not exist on Earth, and we ignore any other consequences for the purposes of this query. Without actually making gold to see, is our understanding of QED sufficient to be able to look at Hg as a silvery metallic liquid and work out all the unique...
39. ### B How to calculate these odds?

Yes, it was when I tried to combine the probabilities that I got confused. I'll work through your example Yes people do answer as if the question was 'at least one non matching pair', but you can ask the question in such a way as to eliminate all possibility of this error, yet you'll still get...
40. ### B How to calculate these odds?

The reason that this came up is that I was using this online Pai Gow practice tool, and I've seen hundreds of Pai Gow games played live in a casino and I am assuming that this site is using a random generator to select the tiles, and yet the hands it deals both to itself and to the player look...
41. ### B How to calculate these odds?

Yes, this is why it's always better to add that it's not a trick. Try it and see! I even tell people before I ask it that almost no one ever gets this right, I explain it's just what it sounds like. Still they say 7, almost every time.
42. ### B How to calculate these odds?

OK that's excellent thank you. Yes pretty obviously 3 but ask someone and they'll probably say 7, although I can also get other answers. They'll say 7 and I'll say, no it's 3 and they'll say "but what if you get three black socks". And I'll say well you have a pair then don't you. It's crazy I...
43. ### B How to calculate these odds?

I am actually after something in between a) and b) although although b) is also good to know. But I can see what I was doing wrong now by looking at your working out. Out of the four tiles I just want at least one pair, I don't care if the other two match or not. I don't need to exclude a...
44. ### B How to calculate these odds?

Yes you have accurately grasped my problem. Thank you for that, no wonder I couldn't work it out, I shall attempt to understand your equation.
45. ### B How to calculate these odds?

To be sure there are very complex odds calculators that give you useful information but nothing that addresses what I want to know, which is simply what are the odds of getting at least one pair in Pai Gow. Simply put. There are 16 pairs of tiles. The 32 tiles are dealt out at 4 tiles per hand...
46. ### B Why is the Webb Space Telescope placed at L2?

It needs to be perpetually shaded and it is by the tennis court size sun shade.
47. ### The James Webb Space Telescope

This one is also pretty good with some 3D topography.
48. ### I Why does Webb orbit L2, is it because of the Moon?

OK, I would never have suspected that the Coriolis force would have anything to do with it.
49. ### I Why does Webb orbit L2, is it because of the Moon?

I was already puzzled by the concept of orbiting a Lagrange point and then I find out it's about the same size orbit as the Moon. I am thinking that if there was no Moon that the Earth and the Sun are far enough away to be treated as points and so that there would be an exact distance further...
50. ### I Rovelli on Quantum Gravity

Your research is untainted by funds from former 45.