Cap'n Refsmmat

owl, do you agree that numerous experiments have shown the speed of light to be the same in all reference frames?

So how can you conclude that there are vasts amount of evidence to support the claim that Earth will be spherical when we fly past at high speeds? Nobody's ever done it before.

Basically. Applets consist of Java programs which are compiled into "bytecode," which is is sort of halfway between a programming language and machine code. A Java "virtual machine" processes the bytecode like it's machine instructions. Web browsers can embed Java applets -- essentially, the web browser fires up the Java system, gives it the bytecode, and says "display the result right here in this web page." It's similar to how Flash video works.

owl, how many times has an Earth scientist flown past Earth at near the speed of light and measured its shape?

Java is executed in the web browser through "applets," which are precompiled files plugged in with appropriate HTML tags. They're rather uncommon these days.

Then why do you still ask trivial questions about its mechanics and behavior?

Spacetime. Elapsed time has something to do with shape because distance through time and distance through space can intermingle, just like an object can be rotated so that distance to the left becomes distance upwards. Two events which occur at the same location five seconds apart can, in another reference frame, appear to be simultaneous but at different locations -- because they have essentially "rotated" from temporal to spatial separation. This accounts for observations of time dilation and length contraction in many different situations. I'd suggest you try a book like Spacetime Physics, which introduces and demonstrates the concepts of spacetime, a four-dimensional universe, and length contraction and time dilation. I have heard nothing but good things about it. You will find it enlightening.

Four-dimensional. It's the only way this works out to be consistent and experimentally valid, and it doesn't require a morphing Earth.

You're reading instructions for Linux and trying to use them on Windows. You don't need to use su on Windows, since you probably have administrator privileges anyway. You can also create the directory through Windows Explorer (i.e. My Computer) rather than using mkdir.

Perhaps you could tell us what errors you get?

Do the hashes represent the contents of the memory or simply the addresses of active pages? Does the system operate at a level where it would be affected by address space layout randomization (which most modern operating systems perform)? I also don't understand why you need an approximate nearest-neighbor algorithm when your data is 1-dimensional.

Is there any reason that God, an omnipotent and omniscient being, should follow advice He gives to puny mortals? Presumably, when you're God, you have to behave a bit differently than most people.

I don't think that one actually factors very well, the way you've written it. I mean, you could maybe do this: [math](x-a)(64(x-a)^2 - 1)[/math] but that doesn't really simplify it any.

[math](3x+(x^2-x+1))+(x+1) = 3x + x^2 + 2[/math] So no, that's not the same as what you started with. If there's no multiplication, how can you get an x3? In this case you have the cube of a binomial. This site gives some helpful tips on factoring it: http://www.sosmath.com/algebra/factor/fac05/fac05.html

I'm not sure that link matches the title of this thread. Is that the right link?

If the two are at 100 degrees Celsius, it's of course true that neither is hotter than the other. However, one must remember that there can be a difference between "hotter" and "feels hotter", depending on the heat capacity and conductivity of the material. For example, reach into a 400-degree oven and your hand won't be burned by the hot air -- but grab the 400-degree metal pan with your bare hands and you'll end up with some blisters. The pan, with a higher specific heat capacity, can transfer more energy into your hands than the air can, despite being at the same temperature. It's also possible to heat up steam past 100 degrees Celsius, although I don't think that commonly happens in a boiling pot or kettle.

Please note SFN rule 7: If you'd like to hang around and discuss systems science, that's fine, but please don't blatantly advertise your own site.

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Nope; in relativity, velocities don't add up like that. Suppose object A and B are shooting towards each other at 0.9c. From A's perspective, B isn't coming at it at 0.9 + 0.9 = 1.8c; B is coming at it at [imath]\frac{0.9+0.9}{1+0.81}=[/imath] 0.994c. Relativity is fun that way.

Ah, I see. I should have quoted this instead: ...which implies that your liquid nitrogen cylinders never warm up if you do not open the valves. They do, of course, and the internal pressure of the bottle rises until a relief valve opens.

What you implied was that it is physically impossible for the liquid nitrogen to warm up otherwise: That's of course not true; it can warm up and increase the pressure indefinitely. The bottle merely explodes at some point during that process. Perhaps you could be clearer in your explanations in the future to prevent this sort of problem. I understand liquid nitrogen bottles and how they work, so don't worry.

I dunno, I'd like to buy a few bottles from his supplier.

So if I compress a bottle of gas, and it becomes warmer due to the increase in pressure, it will never cool down unless the valve leaks? So how long will this cylinder of liquid nitrogen remain cold? Indefinitely?

What if the gas came in a pre-compressed bottle which had already cooled to room temperature? I would again like to appeal to those posters using phrases like "Utter nonsense" and "absolutely ridiculous contentions" to follow SFN rule 1 more carefully.

No. Time is independent of ticks of stopwatches. I am not in a position to fully explain the nature of spacetime and its meaning of relativity to you. I suggest a good textbook. You need to understand special relativity fully before we can have this discussion.