What is the difference in voltage (or potential voltage) between the earth and space? |
- What is the difference in voltage (or potential voltage) between the earth and space?
- What was the diopter of leeuwenhoek`s microscope?
- What was Earth like in the immediate aftermath of the asteroid impact that killed the non-avian dinosaurs? What was Earth like in following years? How long did it take for the dinosaurs to die out?
- Are Monte Carlo simulations really necessary, considering that in order to set up the simulation, you need to know enough about the problem such that you can solve it analytically?
- Is there a way to reverse starch gelatinization?
- [Physics] Do the nuclear weapons have any use other than being a military or diplomatic threat ?
- Where does the energy for exchange particles come from?
- Are you looking through a window when you look at the reflection of something in it?
- Does lightning only make sound when it hits ground?
- Why is the radiation level so high on the surface of Europa?
- Why *doesn’t* sediment cause ocean levels to rise?
- Why is it said that hydrogen bonds hold water molecules apart?
- How do sulfur-oxidizing and sulfur-reducing microorganisms generate ATP?
- Is there a minimum number of islands for an archipelago?
- As the earth is hit by tons of meteorits over time, is there a risk that this leads to a significant perturbation of its orbit (because of the mass increase), so much that it could be dangerous to human kind ?
- A recent post suggested a woman was 39 weeks pregnant. How long can a woman possibly be pregnant? Can a pregnancy last 350 days and deliver a living baby?
| What is the difference in voltage (or potential voltage) between the earth and space? Posted: 19 May 2018 02:32 AM PDT For example. If we built a space elevator, it's going to be a very long body extending from the surface of the earth into the farthest reaches of the atmosphere. An object that long would surely create a significant voltage potential assuming it was ungrounded for the purpose of hypothetical science. What would the possible voltage potential be from top (space) to bottom (Earth) be? Would we be able to harness any form of useful energy from such a device? [link] [comments]  |
| What was the diopter of leeuwenhoek`s microscope? Posted: 19 May 2018 05:29 AM PDT I need to know the diopter of the microscope for a project, but I can't find it on the internet. [link] [comments]  |
| Posted: 18 May 2018 11:26 AM PDT What was Earth like after the asteroid hit? I imagine the area around the impact, probably for several hundred miles, must have been like a combo earthquake + volcanic eruption and there were tsunamis as a result. But what would things look like as you go farther away? If the asteroid hit the Yucatán peninsula, and I was about the same distance away as modern day Nunavut, what am I experiencing? What would I experience living on the opposite side of the planet? Is the whole world plunged into darkness? What type of darkness? Total pitch black or like a bad smoggy day? What's the world like 1 year after impact? 2-5 years? 10 years? And what's happening to the megafauna? The day after the impact are all the sauropods dead or something? Or is it a more "gradual" dying off (in terms of human lifetimes, not the geological scale)? For instance, one human generation after the impact, what do animal populations look like? Are there just no more dinosaurs or are there fewer but still relatively plentiful or is it just super sparse now? Are dinosaurs (especially huge ones like sauropods) disappearing at a rate that would be obvious to anyone looking or is it taking a thousand, ten thousand, or even a million years? [link] [comments]  |
| Posted: 18 May 2018 04:55 PM PDT Consider the traditional MC simulation problem of simulating pi: you generate random points in a unit square and check to see if they lie inside or outside a unit circle. In order to run that simulation, you need to know the equation of the circle, which I would think imply that you already have the ability to compute pi without having to do the simulation. It makes me think that all MC simulations are like this -- you have to know enough about the problem to set up the simulation, which should be enough info to solve the problem already. Are there practical problems for which Monte Carlo simulations are the only way to find a solution? If so, is that only because we don't know yet how to solve those problems analytically? [link] [comments]  |
| Is there a way to reverse starch gelatinization? Posted: 19 May 2018 05:04 AM PDT I make bubble tea for a living and I'm wondering if there is a way for cooked tapioca bubbles to not go through starch gelatinization? I'm completely oblivious of preservatives so any suggestions would be greatly appreciated! [link] [comments]  |
| [Physics] Do the nuclear weapons have any use other than being a military or diplomatic threat ? Posted: 19 May 2018 03:10 AM PDT |
| Where does the energy for exchange particles come from? Posted: 18 May 2018 12:28 PM PDT The weak interaction uses a W boson to transfer momentum, but it's much heavier than a proton and seemingly spontaneously comes into existence for the purpose of the interaction and then vanishes. I'd like to know how this complys with the conservation of energy because it doesn't really make sense to me. [link] [comments]  |
| Are you looking through a window when you look at the reflection of something in it? Posted: 18 May 2018 07:34 PM PDT If I'm looking at the reflection of something in a window, am I staring out the window? My focal point is on the other side of the window, but what I'm looking at isn't actually there, so am I looking out the window, at the window, or something else? [link] [comments]  |
| Does lightning only make sound when it hits ground? Posted: 19 May 2018 01:28 AM PDT It makes sense that it would, but I'm just curious as to why ? [link] [comments]  |
| Why is the radiation level so high on the surface of Europa? Posted: 18 May 2018 02:08 PM PDT Where does it come from? What kind of radiation is it? How high is it really? [link] [comments]  |
| Why *doesn’t* sediment cause ocean levels to rise? Posted: 18 May 2018 11:26 AM PDT |
| Why is it said that hydrogen bonds hold water molecules apart? Posted: 18 May 2018 02:30 PM PDT For example, Chaplin on his webpage states: ''The hydrogen bonding, although cohesive in nature, is thus holding the water molecules apart.'' Why is that so? [link] [comments]  |
| How do sulfur-oxidizing and sulfur-reducing microorganisms generate ATP? Posted: 18 May 2018 10:09 AM PDT I'm trying to understand how different forms of bacterial metabolism work, but I'm getting muddled up. To obtain energy (ATP) and fixed carbon, organisms require an energy source, an electron donor, and a carbon source. For example; In eukaryotic heterotrophs;
How does this process work in an organism (bacteria or archaea) that, for example, reduces sulphate or oxidizes sulfur? [link] [comments]  |
| Is there a minimum number of islands for an archipelago? Posted: 18 May 2018 08:40 AM PDT |
| Posted: 18 May 2018 03:16 PM PDT |
| Posted: 18 May 2018 08:29 AM PDT |
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