Why do we have kneecaps, but we don't have elbow caps? |
- Why do we have kneecaps, but we don't have elbow caps?
- Do the past or future currently "exist" in some dimension or form?
- Possible to decompose function into non-sine waves?
- Given two identical people, Person A living on the equator, and Person B living at a pole, how much longer does Person A live due to relative time difference?
- Do preservatives have an effect on obesity?
- Can we use Gravitational waves to find and discover new interstellar objects?
- Can anything besides time affect the half life of a radioactive material?
- The surface of the earth is smoother than a snooker ball if it were to be scaled down to the same size. What would the relative heights and depths of the earth have to be for it to be as dimpled as a golf ball?
- Are any radioactive elements or isotopes no longer radioactive when part of a molecule?
- Why is the civil/tropical year shorter than the sidereal year?
- Why do air conditioners make the waste water acidic?
- How far could Earth move either towards or away from the Sun before it left the Goldilocks zone of comfort and all temperate weather were eliminated?
- Why does river sediment create fertile soil?
- How many replication bubbles are there on one chromosome?
- Why can't mobile design offer swappable RAM modules like PC counterparts?
- What about deep breathing makes us lightheaded?
- What about hydrocarbons makes them so great for combustion reactions?
- Does the energy required to heat water increase as the water temperature increases?
- In this video Brian Greene seems to say that in an infinite universe the big bang does not go back to a point, but take up infinite space. Am I interpenetrating this right?
- Do oxygen levels drop in areas during night time?
- How do biological receptors recognise a photon if photons have no mass?
- What is thought?
- Can photons decay over time?
- Why do humans have so much white in their eyes?
| Why do we have kneecaps, but we don't have elbow caps? Posted: 22 Feb 2016 05:56 PM PST |
| Do the past or future currently "exist" in some dimension or form? Posted: 22 Feb 2016 05:04 PM PST |
| Possible to decompose function into non-sine waves? Posted: 22 Feb 2016 03:16 PM PST Fourier decomposition transforms a function into a superposition of sine functions with different amplitudes and phases. But is it also possible to decompose a function into other types of waves, for example triangular or square waves? [link] [comments]  |
| Posted: 22 Feb 2016 07:17 PM PST This is a concept I've thought about for some time. Given two identical people, born at the same time with the same life span, how much time does person A gain traveling faster at the equator relative to person B living at a pole. [link] [comments]  |
| Do preservatives have an effect on obesity? Posted: 22 Feb 2016 05:21 PM PST Do preservatives carry enough antimicrobial properties to effect gut flora and cause obesity? This is coming from a place of speculation and curiosity, not FPH. Thank you for your time. [link] [comments]  |
| Can we use Gravitational waves to find and discover new interstellar objects? Posted: 22 Feb 2016 01:55 PM PST I know that in the LIGO Project that they used a fairly big Gravitational Wave detector to detect it but, can we use this to find interstellar objects that we can't find otherwise? [link] [comments]  |
| Can anything besides time affect the half life of a radioactive material? Posted: 22 Feb 2016 06:05 PM PST Say you melted the substance? Would absolute zero affect it? What about an insane temperature? [link] [comments]  |
| Posted: 22 Feb 2016 11:20 AM PST |
| Are any radioactive elements or isotopes no longer radioactive when part of a molecule? Posted: 23 Feb 2016 05:29 AM PST |
| Why is the civil/tropical year shorter than the sidereal year? Posted: 23 Feb 2016 06:26 AM PST On wikipedia ( the german one though ) it says it is due to the precession of the earth, but why ? [link] [comments]  |
| Why do air conditioners make the waste water acidic? Posted: 23 Feb 2016 04:49 AM PST I work as a handyman. Someone told me years ago that air conditioners make the water that drains out of them really acidic. At the time I observed where the drain water from one was rusting out a roof. Now I have two clients both with rusted out gutters because of air conditioner water that is run into the gutters. I can just tell my clients that this is what happens and they believe me, but I would like to understand the phenomenon. [link] [comments]  |
| Posted: 23 Feb 2016 05:49 AM PST |
| Why does river sediment create fertile soil? Posted: 23 Feb 2016 05:42 AM PST As a river rushes past rocks, it erodes them, and some salts dissolve. When it slows down, the bits of rock sediment, and I have always read that this creates very fertile soil. However, isn't the sediment mostly sand, as anything that could be useful to plants must be water soluble and therefore wouldn't sediment? [link] [comments]  |
| How many replication bubbles are there on one chromosome? Posted: 22 Feb 2016 06:32 PM PST How many replication bubbles are there on one chromosome on average [link] [comments]  |
| Why can't mobile design offer swappable RAM modules like PC counterparts? Posted: 23 Feb 2016 04:02 AM PST |
| What about deep breathing makes us lightheaded? Posted: 22 Feb 2016 04:56 PM PST As in, how does deep breathing cause lightheadedness? If it's simply "Too much oxygen" what about all that oxygen results in feeling lightheaded? What mechanisms are at play/ what's going on? [link] [comments]  |
| What about hydrocarbons makes them so great for combustion reactions? Posted: 22 Feb 2016 04:51 PM PST Why are they so widely used in combustion reactions for energy? [link] [comments]  |
| Does the energy required to heat water increase as the water temperature increases? Posted: 22 Feb 2016 04:59 PM PST First time poster. Sorry if this should have been a physics question. If I had water that was 10 degrees Celsius, and I wanted to raise it to 20 degrees Celsius it would require the same amount of energy in joules to do so every time correct? So if I wanted to take that same water and raise it from 20C to 30C, would it require the same amount of energy in joules as the example above? Practical use: I'm about to build a solar heating setup for my pool. I built a controller for the water pump that will pump pool water through the heating coils on my roof. The controller has a temperature probe that will sit inside the coils. The controller senses the temperature inside the coils. Once the water reaches a 'high' temp set point the pump starts running. Once the water drops below the 'low' set point in the coil the pump turns off and waits for the water in the coils to warm up again. I'm trying to figure out if there's an optimal 'high' temp set point I should be aiming for. I can set it up to 99 Celsius. But perhaps it's more optimal to have it cycle at (for example) 60C if the temperature will climb more slowly after that. The idea being that if that's true, theoretically I'd have better results if the pump cycles more often. [link] [comments]  |
| Posted: 22 Feb 2016 07:14 AM PST https://youtu.be/GbFg1ocDOMk?t=956 I always thought of the big bang as a point that expanded and everything we know of is inside of that point, and the un-observable part expanded from that point as well, and just expanded out past where we can see. And the universe always has a definite size that is always growing. What he seems to be suggesting is that in some theories the big bang is infinite so there is no "outside the big bang" am I understanding that correctly? [link] [comments]  |
| Do oxygen levels drop in areas during night time? Posted: 22 Feb 2016 02:31 PM PST Plants stop producing oxygen at night because photosynthesis isn't taking place right? Does this cause a reduction in local oxygen level? [link] [comments]  |
| How do biological receptors recognise a photon if photons have no mass? Posted: 22 Feb 2016 02:33 PM PST |
| Posted: 23 Feb 2016 12:22 AM PST I've already tried to figure this out, but every answer I see is related to output from or input to the brain. I want to know what thoughts are, on a measurable scale with units. I'm more interested on thoughts without immediate physical stimuli (like reactions) and more on random thoughts. Like why do I think thoughts when I'm trying to go to sleep? Where do new thoughts come from? [link] [comments]  |
| Posted: 22 Feb 2016 10:36 PM PST |
| Why do humans have so much white in their eyes? Posted: 22 Feb 2016 08:54 PM PST It seems like most animals irises take up the entire space between their eye lids why are we different? [link] [comments]  |
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