- Planck's quantum hypothesis proves that a body can't emit radiation beyond a certain frequency, but this still means that it will emit waves in ALL THE POSSIBLE FREQUENCIES below this limit. So wouldn't the body still be losing energy at an infinite rate?
- What is the difference between quantum uncertainty and ordinary uncertainty?
- Are black holes the only things that cause physics to break down and math calculations extremely difficult? What other areas of reality lead to this?
- [Astronomy] What is the significance of NASA's findings about the Martian atmosphere?
- Why are tornado watches and warnings almost always in the evening?
- why are GPS satellites put in LEO and not geostationary?
- SanDisk released a 200GB Micro SD. What might be the reason, technologically, for such an odd capacity?
- Why do some people get sick more often and experience more severe symptoms?
- What is the speed of conductive heat?
- If there's a singularity at the center of every black hole, shouldn't the gravitational pull of black holes be infinite, as a singularity is, by its very definition, something with an infinite density?
- Double rainbow, triple rainbow... just how many can happen at once?
- Creating drinking Alcohol from hydration reactions instead of Fermentation?
- Why is developing an Artificial Intelligence so difficult?
- Can the industrial scale air capture of CO2 from Carbon Engineering really work?
- Why does the aortic valve open and close at different pressures?
| Posted: 06 Nov 2015 04:42 AM PST |
| What is the difference between quantum uncertainty and ordinary uncertainty? Posted: 06 Nov 2015 05:34 AM PST In an electron diffraction experiment, we can shoot electrons one at a time through a grating, and they will make a diffraction pattern, showing that the electrons are really waves. This diffraction pattern is a statistical distribution of the electron wavefront at the detector, and the grating helps to illustrate the connection between uncertainty in position and momentum. If i make macroscale experiments, i will also get statistically distributed results. If i make different experiments on the same sample, the order of experiments is usually important. With better methods i can reduce the interaction between the experiments. Is the Heisenberg uncertainty just the theoretical lower bound on this interaction, or are there other differences as well? [link] [6 comments]  |
| Posted: 05 Nov 2015 03:00 PM PST |
| [Astronomy] What is the significance of NASA's findings about the Martian atmosphere? Posted: 05 Nov 2015 01:26 PM PST What new questions does this raise? What questions has this answered? What does this mean for possible colonization of the planet? Elon Musk has suggested nuking the planet to 'warm it up,' does this conflict with such a plan? [link] [16 comments]  |
| Why are tornado watches and warnings almost always in the evening? Posted: 05 Nov 2015 04:24 PM PST Like, seriously. Most tornado warnings and watches I've lived through are around dinnertime. Does it have to do with how everything's cooling down from the heat of the day or something? [link] [5 comments]  |
| why are GPS satellites put in LEO and not geostationary? Posted: 06 Nov 2015 03:20 AM PST |
| Posted: 06 Nov 2015 03:20 AM PST I saw on Amazon that SanDisk has a 200GB Micro SD. It seems really odd as usually storage is usually sold in sizes that are power of 2's (8, 16, 32 etc.) I'm curious to know if there is any technological reason behind this. Product Link: http://www.amazon.com/exec/obidos/ASIN/B00V62XBQQ/ozba0e-20) [link] [3 comments]  |
| Why do some people get sick more often and experience more severe symptoms? Posted: 05 Nov 2015 10:58 AM PST |
| What is the speed of conductive heat? Posted: 05 Nov 2015 10:46 PM PST In another thread here, I posed the question of the speed of conductive heat (not radiative heat, which is the speed of light). But I got no definitive answer, some said the speed of sound, others said "much faster" due to electrons somehow, whilst others said other things. So what is the speed of conductive heat relative to materials, is it different for different materials (I expect it is), and how do different factors affect it? [link] [2 comments]  |
| Posted: 06 Nov 2015 02:18 AM PST |
| Double rainbow, triple rainbow... just how many can happen at once? Posted: 06 Nov 2015 02:02 AM PST |
| Creating drinking Alcohol from hydration reactions instead of Fermentation? Posted: 05 Nov 2015 01:57 PM PST I was wondering why we always use fermentation to form ethanol instead of a hydration reaction with ethene. To me it seems a lot more simpler to just do this instead of moonshining like a lot of people do, playing around with different ratios of sugar and yeast and sometimes ending up with poison. It seems like a safer 1 step process to me, am i wrong? [link] [16 comments]  |
| Why is developing an Artificial Intelligence so difficult? Posted: 05 Nov 2015 05:24 PM PST |
| Can the industrial scale air capture of CO2 from Carbon Engineering really work? Posted: 05 Nov 2015 07:36 AM PST I saw some Reddit posts about the YouTube video and their website but there wasn't much activity on the threads. The video is old and their site doesn't seem to be updated. Can this really happen? Has anybody heard of them recently? I want to believe. [link] [4 comments]  |
| Why does the aortic valve open and close at different pressures? Posted: 05 Nov 2015 08:56 AM PST Looking at all sorts of different pressures volume loops, the opening and closing pressures of the aortic semi lunar valve are always at different pressures. Wouldn't the pressure needed by the ventricle to force it open be the same as the pressure needed by the aorta to force it closed? [link] [2 comments]  |
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