Could an iPod ever successfully shuffle an album in the correct order? What are the odds of this? |
- Could an iPod ever successfully shuffle an album in the correct order? What are the odds of this?
- Why so many organic substances containing NO2 groups are explosive?
- Is there a way for us to know what the population of any given species of dinosaur was during their time on earth? And if so, how?
- Have there been any conjectures proven false, despite being widely believed to be true prior to the disproval?
- What would the creation of a black hole look like?
- Can we pull a reflected image off a "nonreflective" surface?
- What does "m" in atomic mass number mean?
- Is there a theoretical maximum magnetic field strength?
- Since the honeybee is an foreign species in North America, would it really be that bad for NA if all honeybees died out?
- Quantized Momentum Uncertainty in the Particle-in-a-Box experiment?
- How does 2,4-dinitrophenol span membranes?
- In four (or three) fundamenal interactions, why only Electromagnetic force can be observed in the form of attract and repel force, while others are only attracting?
- Do logarithmic functions have to be base ten?
- [Neurochemistry] How exactly does dopamine receptor downregulation cause the impulse to go get more drugs?
- Considering the fact, that bananas contain unstable radioactive isotopes of potassium, how many bananas would it take to give an average human radiation sickness ?
- What is the Hellmann-Feynman Theorem?
- Does computer audio have something like a framerate?
- Is there a critical age for someone's learning/development? [psychology]
| Could an iPod ever successfully shuffle an album in the correct order? What are the odds of this? Posted: 17 Mar 2017 05:20 AM PDT |
| Why so many organic substances containing NO2 groups are explosive? Posted: 16 Mar 2017 06:01 PM PDT |
| Posted: 16 Mar 2017 04:32 PM PDT |
| Posted: 16 Mar 2017 11:42 AM PDT Many famous conjectures (e.g. Goldbach's Conjecture) may not be formally proven, but are widely believed to be true due to strong heuristic and statistical evidence, and a disproval seems exceedingly unlikely. Has there been a case where a conjecture, widely believed to be true for a long time, has actually been proven false later? [link] [comments]  |
| What would the creation of a black hole look like? Posted: 17 Mar 2017 02:07 AM PDT |
| Can we pull a reflected image off a "nonreflective" surface? Posted: 16 Mar 2017 12:42 PM PDT Can we pull a reflected image off a "nonreflective" surface? Reflectiveness is relative. A dirty mirror could be called reflective. A cracked or distorted mirror too. But how about white sheet of paper? Or a rock? It may not be an image that our eye or mind can appreciate, but maybe we could run the reflected light through a noise filtering algorithm. So I guess the real question is, how good are our reflected light image extraction algorithms? What's the limit on extractability? [link] [comments]  |
| What does "m" in atomic mass number mean? Posted: 16 Mar 2017 12:59 PM PDT I sat down here reading and I don't seem to understand what "m" means in the ending of an atomic mass number. For an example the isotope 234m Protactinium. First of all what does it mean? And how would it affect decay? [link] [comments]  |
| Is there a theoretical maximum magnetic field strength? Posted: 16 Mar 2017 06:12 PM PDT I understand this may be expressed in terms of... what, volume of spacetime? [link] [comments]  |
| Posted: 16 Mar 2017 08:43 AM PDT Since honeybees are technically an invasive species, would it have much impact? How did pollination work before bees in the Americas? [link] [comments]  |
| Quantized Momentum Uncertainty in the Particle-in-a-Box experiment? Posted: 16 Mar 2017 08:56 PM PDT Hello everyone. In regards to the particle-in-a-box experiment, we know that said particle can only exist at discrete wavelengths, and from the de Broglie theorem, discrete momenta as well. From this, you can also derive the discrete energy levels said particle can exist in, but my question is regarding the application of the uncertainty principle to this situation. Although our momenta can only be discrete, doesn't there exist uncertainty in the direction (i.e. left or right), and thus the uncertainty in the momenta is twice the discrete momentum? If this is true, then, my question is how exactly the momentum uncertainty can be discrete, since it seems it should be continuous. If this is false, then could someone please explain why it is? I feel like I'm making an incorrect assumption here, but I don't know where. Thanks! [link] [comments]  |
| How does 2,4-dinitrophenol span membranes? Posted: 16 Mar 2017 04:35 PM PDT In biochemistry, a question was raised that said 2,4-dinitrophenol distrupts the proton gradient created in mitochondria by acting as a proton transporting molecule. But how does it span a hydrophobic mitochondrial membrane if the molecule itself seems so polar? [link] [comments]  |
| Posted: 16 Mar 2017 09:31 PM PDT If we're trying to unite them in a unified field, why's there that difference? [link] [comments]  |
| Do logarithmic functions have to be base ten? Posted: 16 Mar 2017 09:28 PM PDT It seems like a lot of functions can be expressed logarithmically, such as that for sound. Is this just a coincidence that it goes along with our base 10 system or can it be expressed in any base? [link] [comments]  |
| Posted: 16 Mar 2017 05:03 PM PDT So I just finished listening to "The Addictive Brain" on the Great Courses and there was something I wanted to make sure I'm understanding right: I get that with frequent use of something like cocaine, postsynaptic dopamine receptor availability decreases. However, how would this aid in the impulse to go out and seek the drug? I understood from the course that for an addict, pleasure gained from the drug decreases with use and craving for the drug increases. And, environmental cues or triggers will convey to the addict that this is the familiar situation in which the behavior of buying drugs leads to a big reward, so dopamine rises in response to the trigger and the drug addict performs the drug purchasing behavior. However, if their dopamine receptors become more and more downregulated with drug use, wouldn't their impulse to purchase the drug be lessened because of this? That is, the presynaptic dopamine release may get bigger due to stronger establishment of triggers (thanks to VTA), but because the postsynaptic dopamine receptor availability is decreasing, shouldn't the capacity to produce an effect (impulse) be lessened? I'd really appreciate any clarification on this. Or, if what I've written above shows that I'm misunderstanding some mechanism please let me know [link] [comments]  |
| Posted: 16 Mar 2017 08:49 AM PDT |
| What is the Hellmann-Feynman Theorem? Posted: 16 Mar 2017 07:34 PM PDT Hi! I was recently suggested to read researches regarding the Hellmann-Feynman Theorem. As a result, I started with Wikipedia, as I assumed it would have the simplest version of it with clear explanations. Nevertheless, despite reading the entry in Wikipedia, alongside a few research papers and lectures. I'm still a bit clueless regarding it. Could anyone provide me a simple explanation of what the theorem states and how it is used in the applications mentioned in Wikipedia? Additionally, why must the eigenfunction be normalized and why must is be continuous with respect to the parameter of the Hamiltonian? Thanks! [link] [comments]  |
| Does computer audio have something like a framerate? Posted: 16 Mar 2017 10:41 AM PDT I was using a Midi keyboard the other day and I noticed that there was a delay between pressing the keys and when the software played the notes (FL studio). When I went into the settings it said there was an intentional delay, and if I changed audio drivers it allowed me to lower it by a few milliseconds, but anything below around 30 ms delay would make the sound inaudible. My immediate thought was how did they need delay when video games would make a noise instantly when you press a button. Is there some sort of "framerate" in computing that the audio needs to sync to? [link] [comments]  |
| Is there a critical age for someone's learning/development? [psychology] Posted: 16 Mar 2017 09:27 AM PDT Is there an age range where we learn the best? worst? Can't you learn at all ages? [link] [comments]  |
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