What exactly happens in our brain when we daydream/space out? Is it similar when we are sleeping? |
- What exactly happens in our brain when we daydream/space out? Is it similar when we are sleeping?
- Do all known species exhibit an approximately 50/50 distribution between male and female offspring or are some weighted toward one sex over the other?
- Why are we the only animal with the need to wipe after we go to the bathroom?
- I find myself in my spacesuit floating in space next to a space station. Is it possible for me to somehow "swim" to the space station from a standstill situation?
- If you construct a spaceship in orbit, does it even need to be aerodynamic at all? No atmosphere in space...
- What Really Heat Is ?
- What will the internet look like if humans inhabit multiple plantes?
- Why do fillings or braces not present a danger in MRI scans?
- Why does Magnesium have a lower melting point than Calcium?
- [Medicine] How does rat poison, an anticoagulant, kill the rat if the rat is not bleeding?
- Why no Electromagnetic induction with a constant field?
- Light waves change their frequency due to relativity effects, right? (redshift, blueshift). So I'm wandering, will radio waves become visible light at certain speeds? And can visible light turn X-ray?
- How is energy harnessed in a nuclear reactor?
- What exactly is libration?
- What limits the magnification in microscope objectives?
- In hyperbolic geometry, how big is a dodecahedron composed entirely of right angles?
- How do certain chemicals, like doxycycline, cause phototoxicity?
- Can capillary action be used to draw water 'uphill'?
- To what extent does the taking of antibiotics interfere with the body's symbiotic relationship with bacteria?
- Is it possible to raise a number to the power of any real 2x2 matrix?
- How is it possible to get the right phase when using intermetallic phases for 3d printing?
| What exactly happens in our brain when we daydream/space out? Is it similar when we are sleeping? Posted: 03 Jul 2016 10:13 PM PDT |
| Posted: 03 Jul 2016 06:02 PM PDT |
| Why are we the only animal with the need to wipe after we go to the bathroom? Posted: 03 Jul 2016 02:31 PM PDT If I don't wipe once I feel the burning sensation throughout the day, but pretty much every other animal has a "no wipe" policy. do all animals feel this and ignore it or is there an actual scientific explanation for why we need (or desire) to do something that other animals do not? [link] [comments]  |
| Posted: 04 Jul 2016 12:43 AM PDT *Zero gravity. *Zero speed (relavite to the space station). *100% vacuum. *No strings attached. *All I have is my body and it's normal ways to move. Or am I doomed forever? [link] [comments]  |
| Posted: 04 Jul 2016 05:21 AM PDT Couldn't an interstellar spacecraft by a huge blocky design, a la the Borg cube? With nothing to fly through there'd be no reason for spaceships to be sleek in design, right? [link] [comments]  |
| Posted: 04 Jul 2016 02:58 AM PDT So I know the basis of heat but i have couple of questions about it. Since heat means kinetic energy of atoms, why would current in a wire cause it to heat when it is electrons that are moving, not atoms itself ? similar with it, why light heats things when it is still about electrons and not atom itself ? [link] [comments]  |
| What will the internet look like if humans inhabit multiple plantes? Posted: 04 Jul 2016 04:05 AM PDT Will there be one for each planet seperate? Or can we connect different planets fast and with good quality, like we can connect continents? [link] [comments]  |
| Why do fillings or braces not present a danger in MRI scans? Posted: 03 Jul 2016 05:00 PM PDT As braces are usually steel and fillings are often a mercury, why does the strong magnetic field of an MRI machine not induce a magnetic field in these objects, either exerting a force on them or causing them to heat up through eddy currents? I realise they interfere with MRIs focused around their vicinity, but I don't understand why they don't present a health risk considering the strength of the magnetic field. Thanks! [link] [comments]  |
| Why does Magnesium have a lower melting point than Calcium? Posted: 04 Jul 2016 01:41 AM PDT I did some digging into this, and i cant find an answer. The difference in coordination, the melting points, atomisation energies. I just cant work it out. [link] [comments]  |
| [Medicine] How does rat poison, an anticoagulant, kill the rat if the rat is not bleeding? Posted: 03 Jul 2016 03:09 PM PDT As far as I'm aware, anticoagulants make it so the platelets cannot clot wounds, and therefore lead to excessive blood loss. But if the rat isn't bleeding and therefore unable to lose blood, how does the poison still kill the rat? [link] [comments]  |
| Why no Electromagnetic induction with a constant field? Posted: 04 Jul 2016 06:05 AM PDT Why a constant magnetic field does not induct a electric field? I know the formulas and we all accept it, but i am having a hard time understanding this at the electron level. Ex: We have 2 wires and if the field changes in one it will induct a field in the another wire. What happens when you push electrons back and forth with acceleration? At constant motion there is no induction. Why? [link] [comments]  |
| Posted: 04 Jul 2016 05:39 AM PDT |
| How is energy harnessed in a nuclear reactor? Posted: 04 Jul 2016 04:56 AM PDT There seems to be a lot of information on the internet on how nuclear reactors -- and nuclear reactions -- work, but not on how they actually harness the energy that is released. Furthermore, most of the graphics online show this mysterious 'energy' releasing in a nuclear reaction. [link] [comments]  |
| Posted: 04 Jul 2016 12:40 AM PDT I understand the effects of libration, but I'm having trouble visualizing it from a reference point outside the earth. Would it be accurate to explain libration as a body's axis 'swinging' away and toward a body it is orbiting, similar to a pendulum? Would that mean a point on its axis is fixed; a pivot point? In turn, would this pivot point never deviate from the body's orbit, drawing a perfect ellipse in space without the motions of libration? Also, why is the Moon the only moon in our solar system that librates? Is libration rare? And does it require tidally locked bodies? [link] [comments]  |
| What limits the magnification in microscope objectives? Posted: 03 Jul 2016 03:10 PM PDT I would like to understand why are optic microscope objective lenses limited in magnification and how is magnification connected to resolution. [link] [comments]  |
| In hyperbolic geometry, how big is a dodecahedron composed entirely of right angles? Posted: 03 Jul 2016 02:01 PM PDT Specifically, how far away are the vertices from the center, and how far away are the centers of the faces from the center? I tried to calculate it myself, but I'm getting a negative where I should get a positive. I need to know the distance to the vertices on the Poincaré disk model, and the distance to the faces in terms of actual distance, but I can convert. [link] [comments]  |
| How do certain chemicals, like doxycycline, cause phototoxicity? Posted: 03 Jul 2016 10:57 AM PDT I recently read the instructions of doxycycline tablets and they mentioned that when you take those, you have to avoid direct sunlight as doxycycline increases sensitivity to UV light. I wondered why and the only explanation I could find is that it causes a phototoxic reaction. However, I could not find how exactly the chemical interacts with the normal UV reaction. Could anyone explain how this process works? [link] [comments]  |
| Can capillary action be used to draw water 'uphill'? Posted: 03 Jul 2016 05:03 PM PDT I was reading about capillary action and was curious to understand this effect more. Could it be used to draw water from a lower pool of water, to a higher elevation pool where you could then create a waterfall that deposits the water back into the lower pool? The reason I was picturing this is if you could put a turbine by the waterfall to capture the water falling via gravity, thereby creating an endless cycle of water flowing up, water flowing down, and generating electricity from the whole system
Here is a graphic to help convey what my brain was picturing - http://i.imgur.com/HhchN9v.jpg [link] [comments]  |
| Posted: 03 Jul 2016 10:33 PM PDT When someone takes antibiotics to fight bacterial infections, doesn't doing so also kill off friendly bacteria like those that help in digestion? If so, how, & how long, does it take to recover? [link] [comments]  |
| Is it possible to raise a number to the power of any real 2x2 matrix? Posted: 03 Jul 2016 05:53 PM PDT I know that complex numbers and split-complex numbers can be represented as both scalars and 2x2 matricies, and between them you can make just about every real-numbered 2x2 matrix. Since you can use a complex number as an exponent, and presumably a split-complex number as well, does that mean that every real 2x2 matrix is fair game? If so, is there an easy formula for doing so? [link] [comments]  |
| How is it possible to get the right phase when using intermetallic phases for 3d printing? Posted: 03 Jul 2016 09:57 AM PDT So today I heard a talk about new methods for the productions of prototypes which are used at BMW and it was told that also 3d printing of metals is used. So now me as a chemist thought that most the time actually inter metallic phases are used for airplanes and cars(I think so?) And so I thought that they would also use those intermetallic phases for 3d printing but I think a big challenge would be to get the right phase How is it achieved to get the desired phase? Or maybe it is pretty simple but I imagine it to be quite difficult because for the 3d printing process the used material has to be a fluid for a short time,right? [link] [comments]  |
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