Everything posted by Charles 3781
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First Post on Primes
Could you translate your program into BASIC, please, as that's the only programming language I understand?
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Is global average temperature a useful or thermodynamically valid concept?
Surely, you are going too far. If we know that the average temperature of the Martian surface is -60C, how can that be "utterly useless" in our efforts to engineer a rover capable of surviving on Mars? On the contrary, it has enabled us to engineer numerous recent examples of rovers capable of operating in this low-temperature Martian environment.
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What is the 3rd dimension?
I hope that when you get on a plane, your pilot doesn't follow the same objective scientific approach to co-ordinate system choice, when landing
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Arachnophobia
We door-spiders pop up to catch our prey again.
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Arachnophobia
Crikey, I'm not sure what that means, Phi - will you semaphore it by waving your spinnarettes at me on the Dark web, if you get my drift. Nudge, nudge.
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What is the 3rd dimension?
No, it's real, but we can only visually perceive its reality because we have two eyes. If we were one-eyed creatures like a Cyclops, we'd see everything as optically flat and 2-dimensional. We'd have to use our hands and possibly other appendages, to feel the three-dimensional physicality of bodies.
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What is the 3rd dimension?
I would say, that for humans, the 3rd dimension is "depth" . Like when we look at the colourful images which you kindly posted, in your OP. These are attractive, but exist only on our screens, in the form of flat 2-dimensional images. If we could perceive them in 3 dimensions as solid objects, we would be able to truly visual their 3rd dimensional nature.
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Arachnophobia
I don't believe you keep a spider as a pet. Or actually know, or ever met anyone who does. I bet you just read about the idea in a book, didn't you?
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Arachnophobia
Snakes have never bothered me. But I absolutely can't stand spiders. They're so frightening, with their multiple, thin, stalky legs and unnaturally fast rushing mechanical movements. This fear and loathing of spiders seems universal in humans. I once read in a book, that it is caused by spiders being of extra-terrestrial origin. Could that be true?
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What's The Point Of Calculus??
Isn't the point of calculus this - only proper mathematicians can understand it.
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How large would a black hole need to be to overcome inflation and pull all matter one day into a big crunch?
Don't you mean, "according to scientists", the whole Universe was born from nothing? Suppose you were asked, "Where did your computer come from?" And you said: "That's a meaningless question - it came from nothing." How would you respond?
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How large would a black hole need to be to overcome inflation and pull all matter one day into a big crunch?
According to current theory, didn't the entire Universe spring from a minute "Black Hole" smaller than a proton. Then expanded outwards. To create trillions of stars, galaxies and so on. Given the wide vista of prospects allowed by such a theory, would you rule anything at all out, as physically impossible?
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Why Can't We With Water?
Well of course it was. But please understand my position. When one has acquired a -25 rating, and faces the danger of getting booted off, a degree of unctuousness is called for.
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Why Can't We With Water?
You're right. My post was definitely off-topic, Apologies for derailing the thread.
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Why Can't We With Water?
Thanks Dord. On your remark concerning the outdated "nor", I think you raise a valuable point. Consider these two lines: "Water, water, everywhere, nor any drop to drink" - (18th century original) "Water, water, everywhere, and not a drop to drink" - (revised 21st century modern) The modern revision gets rid of the awkward " nor". Replacing it by the much smoother, and more natural "and not". A definite literary improvement. In a similar way, Science is always being revised and improved. For example we have improved our understanding of combustion, by replacing the 18th century "phlogiston", with "oxidation". Shouldn't such scientific principles be applied to past literature, so as to update and improve it.
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Can you be a scientist and still believe in religion?
Science and Religion are both attempts to make sense of the world. For that, they both deserve praise and credit. Humans like to make sense of things. But isn't the essential difference between Science and Religion this - Science employs mathematics. This is seen In any book of Science. Whether the book is about Physics, Chemistry, Biology, Geology, Sociology, or any other scientific study. Always, in the book, you will find maths. In the form of precise numerical data, detailed tables of figures, . Which prove, or at least lend substantial credibility to, the assertions made in the book. But is this case with religious books, such as the Bible. Are there any mathematical data contained in the Bible, which enhance its credibility?
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Why Can't We With Water?
Thanks swansont for clarifying that point. I used to wonder how sailors could die in agony of thirst when surrounded by water. I thought: "Well, even if the sea-water has got salt in it, surely a little bit of it, would at least help relieve the thirst". And you know - I still kind of think that way! But, as you explain in your post, both science and maritime experience testify to the contrary. From the point of view of long-term survival, that is.
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Why Can't We With Water?
If you were dying of thirst, wouldn't sipping salt-water in modest quantities relieve dehydration?
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Why Can't We With Water?
We live on a planet which has ~70% of its surface covered by oceans with an average depth of~ 12,000 ft of water. Given these facts, doesn't it seem strange that we're worried about water-shortage?
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Phosphine detected on Venus
I wouldn't get too excited about marginal instrument readings from a distant planet such as Venus. This has happened before, in the case of the similarly distant planet Mars. You know what I mean - the "canals".
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Is there such a Thing as Good Philosophy vs Bad Philosophy?
Well perhaps. But we've had 2,000 years of philosophers. Like Plato and Aristotle. Aristotle analysed ideas. He came up with the conclusion that everything below the Moon is made of four elements: 1. Earth 2. Air 3. Fire 4.Water And everything above the Moon is made of a luminous 5th element. This was so ridiculous, that it got protested against even by contemporary Ancient Greek scholars. Unfortunately, their voices were drowned by Aristotle's philosophical followers, who established a reign of scientific terror that lasted 1,500 years. Isn't that what philosophers are. They can't do maths, don't know anything useful. They just waffle and bluff. Or have they any redeeming features.
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Is there such a Thing as Good Philosophy vs Bad Philosophy?
How would you define someone who claims to be a "Philosopher? Is it someone who has big ideas, and would really like to be a Physicist. But can't do the maths.
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Intentional Losses in Wind Instruments
Thanks Enthalpy. You show very clearly, the scientific principles which ought to influence the design of musical instruments, so that they work most effectively. Isn't it a pity that traditional instruments haven't been designed along these scientific lines. Rather, the instruments seem to have evolved in a kind of haphazard way. For example, we have, nowadays, all kinds of "wind" instruments, such as the trumpet , bugle, flute, clarinet and recorder. And stringed instruments like the banjo, violin, cello, and double bass. Do we need all these different instruments? Couldn't they be scientifically reduced to a single all -purpose instrument . Just as past key-board instruments like the clavichord and harpsichord, have been perfected into the modern piano?