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November 24
Why are carbon atoms in carbon nanotubes bonded to only 3 other atoms?
Carbons could theoretically have 4 bonds with other carbon atoms, so why must carbon atoms in carbon nanotubes contain only 3 other bonds to other carbon atoms (thus producing the hexagonal shape)?
Blood glucose levels and exercise
Diabetes management says: Other approaches include exercise and other lifestyle changes which impact the glucose cycle. It's not a very helpful article. I have personal evidence that suggests exercise has an near-immediate ability to lower blood-glucose levels. First, is my personal experience generally true, where "immediate" means within 1 to 3 hours post-exercise? If it is true, what exactly is happening to cause the drop? Thanks Bielle (talk) 03:51, 24 November 2009 (UTC)
cancer
hello, my dad has colon cancer.. he went through an operation 20 days back, 124 cms of his large intestine a removed.. now doctor s started chemeotherapy.. may b 4 lymph node s infected.. wat diet should he have now and wat al care to be taken?? will he get well completely??? pls do reply..
Diving support vessel
2 men RCC is an equipent wich is using in diving support vessel.RCC stands for?
Human Anatomy
What is the reason for men having nipples? What purpose do they serve?
mind altering drugs
What mind altering drugs were used or known in Ancient Civilization such as THC from hemp and hashish?
rise in temperature
To get an idea of just how much energy is contained by a single neutron or in the alternative how much energy is released by the fusion of two hydrogen atoms how many degrees would the temperature of one pound of liquid water rise if a neutron were converted entirely to thermal energy or the fusion of two atoms of hydrogen occurred and the energy released expressed as temperature rise of water? I know this is a dumb question and no its not homework. Thanks in advance.
Flat-nose feature of the actor in Twilight
Does that feature have a technical name? 20.137.18.50 (talk) 20:06, 24 November 2009 (UTC)
beetleguese supernova
Given what we know about the star Beetleguese (sp?) if it was to go supernova (or rather had gone supernova a long time ago and now the light is just reaching earth), would the result be a celestial object visible during the day, or would it not be bright enough? Googlemeister (talk) 20:11, 24 November 2009 (UTC)
Eye color changing mammal
Is there such a mammal that can change the color of its iris, maybe according to mood or food or whatever? --Reticuli88 (talk) 21:13, 24 November 2009 (UTC)
I mean besides humans - --Reticuli88 (talk) 21:42, 24 November 2009 (UTC)
Max. temperature
What is the maximum temperature (climate) that a human body can survive in? --AlexSuricata (talk) 21:40, 24 November 2009 (UTC)
What I mean is, that I read that in some countries the temperature can reach into the 50sº (even up to mid-50sº) - therefore, if I were a God and slowly started to turn the temperature up, what is the temperature at which most people would start to die? --AlexSuricata (talk) 22:35, 24 November 2009 (UTC)
Shape of a black hole
This is something that's never been very clear to me. In terms of the space it takes up in, erm space, is a black hole actually spherical, or is it more like a conical depression/whirlpool with the singularity at the bottom? --84.69.185.215 (talk) 21:51, 24 November 2009 (UTC)
How does the Transit of Venus allow calculation of the distance from the earth to the sun?
From a diagram on the Transit Of Venus page, I can see how its transit could be used to estimate part of the geometry required to estimate the diameter of the sun, and hence its distance away. But this geometric calculation appears to be subject to knowing the proportional position of Venus between the sun and earth. How was this obtained, in Captain Cook's day? 92.24.170.160 (talk) 22:04, 24 November 2009 (UTC)
On second thoughts I'm not sure I do understand the transit method - would anyone like to explain it more please, step by step? It seems to me that you would need to know the distance from the earth to Venus to start with - I presume that was not known. 78.146.176.198 (talk) 23:12, 25 November 2009 (UTC)
OK, although provided you could see Venus, then couldn't you do that at any time without requiring a transit? 78.146.237.244 (talk) 09:38, 26 November 2009 (UTC)
Speed Of Light
If humanity had not developed senses that could detect light, what would Einstein's idea about it being impossible to travel at or over the speed of light have become? This sounds like a hypothetical question, but what I mean is, is there anything stopping us, besides the existence of light? -- KageTora - SPQW - (影虎) (talk) 23:31, 24 November 2009 (UTC)
Well, this is what I'm getting at. 'C' may be a constant, but why does it have to be light? Before the 'discovery' of light, in our hypothetical universe where humans don't perceive light directly, what would have been the constant? I suppose radio waves would answer that question, as said above, but radio comes in waves, whereas light behaves both as a particle and as a wave (or has that puzzle been sorted out yet?). In either case, there are particles which have been found to travel faster than the speed of light, or at least appear to. When we sort that question out, will they become the new 'constant'? The question I am asking really, is why is light so special? -- KageTora - SPQW - (影虎) (talk) 02:03, 25 November 2009 (UTC)
Let me try to address the question in a different way. Einstein did not start out by assuming that the speed of light is constant -- this was a consequence of his theory, not an assumption. What he really cared about was Maxwell's equations for electromagnetism. According to Newtonian physics, Maxwell's equations could only be valid in one frame of motion (called the "ether"). This violated Einstein's intuitions: he thought that Maxwell's equations should remain valid even in moving reference frames, and worked out a set of rules that would make that happen. The constancy of the speed of light was a consequence of those rules. Looie496 (talk) 18:02, 25 November 2009 (UTC)
KageTora, the Universe has a speed limit and light happens to travel at that speed limit (because light particles are massless) so it is convient to call that speed limit the speed of light . You could also call it the speed of gravity which also travels at the speed limit. Dauto (talk) 19:28, 25 November 2009 (UTC)
November 25
Monstrous shape-shifting owl
I've just been sent a link to this YouTube video, which I found really freaky and disturbing, for some reason that I can't quite place my finger on.
http://www.youtube.com/watch?v=Es52WQKLumI
Does anyone know if this owl is actually a real species and can really do this? I'm thinking that while the first display might be real, the second (demonic looking) one is CGI.--84.69.185.215 (talk) 00:38, 25 November 2009 (UTC)
That was really cool. I don't know if it is real or not. I like it. Dauto (talk) 01:02, 25 November 2009 (UTC)
Early Hominina finding in Americas
What is the oldest known Hominina remains found in Americas before the Homo sapiens arrived here? 174.114.236.41 (talk) 03:12, 25 November 2009 (UTC)
Hood Canal "tide computer"
I came across this interesting snippet in the 'forum' posts at the end of this:
I can't find anything about this on the web - does anyone have any more information about it? Hood Canal has nothing about it. Tide-predicting machine has a lot of discussion of these kinds of gizmo
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