Why is human beard hair so much coarser than either body hair or head hair? |
- Why is human beard hair so much coarser than either body hair or head hair?
- Why does an electron beam not accelerate towards the earth?
- If water has mass and surface tension, what is the minimum mass for a drop of water?
- What really kills you when you die of thirst or hunger?
- In simple language, what's the distribution of mass of a galaxy (i.e. % of total mass as a function of radius)? I actually googled an article on the topic (see text) but it's too technical for me and I'd appreciate a simple explanation.
- Is a snake a head on a long tail, or a head on a long neck?
- how much energy would it take to vaporize the earth?
- Why is it that when cats have different breeds, they all kind of have the same body type, but when it comes to dog breeds they have much more drastic differences?
- What decides whether something burns up (like paper) or melts (like steel) when exposed to high temperatures?
- I tried to make double slit experiment but it didnt work. Where did I make a mistake?
- How do certain scents bring back memories?
- Are you exposed to less cosmic radiation when flying at night?
- What kinds of plastics give off noxious fumes when you bake them and what exactly is going on when this happens?
- How do birds avoid concussions considering the massive g forces they can experience while in flight?
- Would the engines of a Supersonic Jet sound different if you were sitting behind the wings compared to in front of them?
- Why is mars's core solid?
- Why is Riemanns hypothesis so important and what would it mean if someone proved it?
- Why do babies frequently wake up in the middle of the night?
- How is sea level measured?
- If we were on a spaceship traveling at a hypothetical 99.9% the speed of light and I spoke something to you, would you be able to hear me?
- Could liquid water exist in the asteroid belt?
| Why is human beard hair so much coarser than either body hair or head hair? Posted: 09 May 2017 06:29 PM PDT Is it simply a matter of evolution? As beard hair shields a hunter's face against the elements while hunting, it would obviously be an advantage to have facial hair that is stiff and loose to mitigate wind chill or precipitation. What proteins are in beard hair which aren't found in other types of hair? I would love to have any information you can provide on this topic. [link] [comments]  |
| Why does an electron beam not accelerate towards the earth? Posted: 10 May 2017 12:53 AM PDT Electrons have mass, so why are they not affected by gravity in the same way that other mass is? [link] [comments]  |
| If water has mass and surface tension, what is the minimum mass for a drop of water? Posted: 09 May 2017 07:48 PM PDT |
| What really kills you when you die of thirst or hunger? Posted: 09 May 2017 09:12 PM PDT |
| Posted: 10 May 2017 12:05 AM PDT |
| Is a snake a head on a long tail, or a head on a long neck? Posted: 09 May 2017 05:00 PM PDT |
| how much energy would it take to vaporize the earth? Posted: 09 May 2017 10:19 PM PDT I am building a giant death ray and need to get the specs right! [link] [comments]  |
| Posted: 09 May 2017 04:39 PM PDT |
| Posted: 09 May 2017 06:14 PM PDT |
| I tried to make double slit experiment but it didnt work. Where did I make a mistake? Posted: 09 May 2017 01:26 PM PDT So I wanted to make my own double slit experiment and see light as a wave but I ended up seeing it as a particle I guess :( I carved two slits on a thick non translucent paper and used my phone LED light behind that paper ij order to make interference pattern occur on the wall in the dark room but that did not happen. All I got was the two bars illuminated on my wall. Basically tue light just went through rectangular slits and made two rectangular light bars on the wall and there was no interference pattern. I really want to see that pattern for myself. Please help me. Where did I go wrong? Is LED bad light source? Thank you everyone who shares their opinion on this [link] [comments]  |
| How do certain scents bring back memories? Posted: 09 May 2017 07:10 PM PDT |
| Are you exposed to less cosmic radiation when flying at night? Posted: 10 May 2017 01:50 AM PDT |
| Posted: 09 May 2017 05:39 PM PDT |
| How do birds avoid concussions considering the massive g forces they can experience while in flight? Posted: 09 May 2017 06:28 PM PDT How do birds avoid concussions considering the massive g forces they must withstand while in flight? [link] [comments]  |
| Posted: 09 May 2017 08:37 PM PDT Because the jet is moving faster than the speed of sound, would it sound different depending on where in the cabin you were, and if so, by how much? I know some sound will travel through the metal of the plane itself, but would it be quieter in the front of the jet? What got me considering this question specifically was the Concord Jet and how it could fly at twice the speed of sound and was the only "big" passenger airline that I know of. [link] [comments]  |
| Posted: 09 May 2017 08:20 PM PDT |
| Why is Riemanns hypothesis so important and what would it mean if someone proved it? Posted: 09 May 2017 12:43 PM PDT |
| Why do babies frequently wake up in the middle of the night? Posted: 09 May 2017 04:07 PM PDT |
| Posted: 09 May 2017 07:41 PM PDT How is sea level measures accurately? Every ocean and sea has tides, therefore the water height is constantly moving, even without wind driving wave formation. So how is sea level measured, and is it actually different in different areas of the world? Is sea level considered high tide, low tide, average near shore, or something like x miles out to sea? Just struck me that in areas where the tides can change upwards of 20-30 feet (Inchon, South Korea; Mont St Michel, France), sea level is really quite relative. [link] [comments]  |
| Posted: 09 May 2017 10:42 PM PDT Since 99.9% the speed of light is faster than the speed of sound. [link] [comments]  |
| Could liquid water exist in the asteroid belt? Posted: 09 May 2017 06:51 PM PDT Is it possible that an undiscovered body with liquid water, roughly the size of Ceres or smaller, could exist undiscovered in the habitable zone? Also could a dwarf planet composed of nothing but liquid water exist? Basically a giant ball of liquid water suspended in the cold of space...possibly translucent...Just curious... [link] [comments]  |
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