In 2024 if NASA do get to and land on the moon, will novice photographers or people with telescopes be able to see any of the mission? |
- In 2024 if NASA do get to and land on the moon, will novice photographers or people with telescopes be able to see any of the mission?
- How long would the communication delay be from Mars to Earth?
- Why is current the same everywhere in a circuit with series combination of resistances?
- I would have thought that by now the optimum spout-shape (as on jug or kettle) is longsince known - that is, 'optimum' in terms of water falling cleanly from the spout & not dribbling back along the underside of it: so does anyone know whether such an optimum spout exists?
- Do other animals experience the same kind of mental faculty decline as we do when they age?
- In terms of efficiency of cooling a liquid, is it better to blow cold air over it or suck hot air away from it?
- Could a planet exist indefinitely?
- How is the Monte Carlo method different from p hacking?
- What do hospitals do with amputated limbs?
- Do intelligent species' brains share distinctive traits? For example, do all intelligent animals have big prefrontal cortex's?
- How are calories calculated?
- What causes the darker and lighter portions of the moon that you can see when you look up at it?
- How does pencil lead stick to the paper?
- Does the size of a frog have any correlation to the loudness/deepness of its croak? (Either within one species or for frogs in general.)
- When did the last Ice Age end?
- When a star starts producing iron in its core, does it go supernova shortly afterwards, or is it a long process that takes months or years?
- How did people avoid getting sunburned before modern sunscreen?
- Data type values same as quartz crystal frequency?
- What causes dielectric screening to occur?
- How does everyday radiation exposure affect your average life span?
- Do birds being killed by wind turbines count as a form of compensatory predation?
- Earth has seasons because our planet's axis of rotation is tilted at an angle of 23.5 degrees relative to our orbital plane. How common is this axial tilt on other planets and can we assume a planet needs to have seasons in order to support life?
| Posted: 16 May 2019 10:49 PM PDT Will average people be sharing images of the spacecraft orbiting the moon or it landing? Or do regular enthusiasts not have strong enough equipment too see in that detail? [link] [comments]  |
| How long would the communication delay be from Mars to Earth? Posted: 17 May 2019 12:07 AM PDT How long would the delay in communications be through audio and video from a person on Mars to a person on Earth? [link] [comments]  |
| Why is current the same everywhere in a circuit with series combination of resistances? Posted: 17 May 2019 04:05 AM PDT Why is current the same everywhere in a circuit with series combination of resistances? Shouldn't the current slow down due to the resistors? I need help in this topic. (I am new to Electricity) [link] [comments]  |
| Posted: 17 May 2019 06:46 AM PDT And if so, then why it's not so that absolutely all spouts are made that shape. I don't think such a spout-shape could be calculated ... so I'm not asking for a mathematical equation for the curve of it (unless it be a parametrised empirical one). Also such a shape, if it does exist, has possibly been known for two or three millenia ... or yet longer, maybe! Actually - it's just occured to me now that each individual material might have its optimum shape, according as the affinity of water for substance varies from one substance to the next. [link] [comments]  |
| Do other animals experience the same kind of mental faculty decline as we do when they age? Posted: 16 May 2019 06:11 PM PDT We experience some decline when we age, do other animals do?? If they do, how does that manifest? [link] [comments]  |
| Posted: 17 May 2019 06:31 AM PDT |
| Could a planet exist indefinitely? Posted: 16 May 2019 10:28 PM PDT To my understanding, in a few billion years or so, the dying sun of our solar system will expand and destroy Earth. But hypothetically, if the sun were somehow kept in its current stable state forever, would the Earth still naturally decay or otherwise cease to exist as a planet over time? Or would it theoretically be able to keep existing until actively destroyed by an outside force? [link] [comments]  |
| How is the Monte Carlo method different from p hacking? Posted: 17 May 2019 12:19 AM PDT Looking up their definitions on Wikipedia: Monte Carlo methods, or Monte Carlo experiments, are a broad class of computational algorithms that rely on repeated random sampling to obtain numerical results. The underlying concept is to use randomness to solve problems that might be deterministic in principle. as opposed to: Data dredging (also data fishing, data snooping, data butchery, and p-hacking) is the misuse of data analysis to find patterns in data that can be presented as statistically significantwhen in fact there is no real underlying effect. This is done by performing many statistical testson the data and only paying attention to those that come back with significant results, instead of stating a single hypothesis about an underlying effect before the analysis and then conducting a single test for it. Intuitively, these seem very similar to me, and looking through their definitions in detail, I can't convince myself that they are different. Could someone please help me see how they are different? [link] [comments]  |
| What do hospitals do with amputated limbs? Posted: 16 May 2019 09:35 PM PDT |
| Posted: 16 May 2019 01:18 PM PDT |
| Posted: 16 May 2019 10:20 PM PDT I know that a calorie is how much energy is needed to raise the temperature of water by one degree, but how does a company or scientist calculate the calories in food? How are those calories converted into heat? [link] [comments]  |
| What causes the darker and lighter portions of the moon that you can see when you look up at it? Posted: 16 May 2019 01:30 PM PDT |
| How does pencil lead stick to the paper? Posted: 16 May 2019 09:25 AM PDT Might seem like a dumb question, but I know that the lead is just graphite that's rub off in a thin layer onto the paper. How come it doesn't just fall of the paper when you pick it up? [link] [comments]  |
| Posted: 16 May 2019 12:55 PM PDT |
| When did the last Ice Age end? Posted: 16 May 2019 02:27 PM PDT |
| Posted: 16 May 2019 12:50 PM PDT |
| How did people avoid getting sunburned before modern sunscreen? Posted: 16 May 2019 02:10 PM PDT |
| Data type values same as quartz crystal frequency? Posted: 16 May 2019 01:03 PM PDT So I was studying for a microcontrollers test (that's a subject in our school) and one thing we had to memorize are some data type values. I noticed that the range for an integer is from -32768 to 32767. The quartz crystal frequency is 32768 Hz, and that is 1 second. That has to have an explanation. I asked my teacher but he has no idea. Is it possible that the int value range is dependent on the crystal frequency because of the crystal oscillator inside of electronics? Or something similar? [link] [comments]  |
| What causes dielectric screening to occur? Posted: 16 May 2019 09:24 AM PDT I've seen explanations that [make some sense]((http://hyperphysics.phy-astr.gsu.edu/hbase/electric/dielec.html), but I am still somewhat confused about why this happens in general. I'm considering a single positive charge in a dielectric medium. Here's sketch of the effect I'm confused about (P is positive charge, - is small negative from the dipole, + is small positive, r is point of reference where the potential is measured): P r P - + r In this sketch it looks as if the dielectric effect is magnifying the potential since we've now made a positive charge closer to the point of reference by aligning the dipole with the original positive charge. As a follow up: would dielectric screening happen in two/one dimension(s)? [link] [comments]  |
| How does everyday radiation exposure affect your average life span? Posted: 16 May 2019 11:51 AM PDT Does exposure to radiation for example increase mutation chance and thus chance of cancer? If I do that one more Panoramic radiograph, do I die on average 1 month earlier because my cancer chance just got increased? [link] [comments]  |
| Do birds being killed by wind turbines count as a form of compensatory predation? Posted: 16 May 2019 02:38 PM PDT I'm not qualified on whether wind power kills birds, or if it's a problem, I'm just wondering about this. I once attended a talk about compensatory predation and the speaker gave the example of road kill. Was he right? Do wind turbine kills amount to the same thing? [link] [comments]  |
| Posted: 16 May 2019 10:09 AM PDT What if the Earth's axial tilt was 40 degrees? 60? etc [link] [comments]  |
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