From the point of view of evolution, is there a particular advantage or disadvantage to having one eye color over the other? |
- From the point of view of evolution, is there a particular advantage or disadvantage to having one eye color over the other?
- Does an insect, like a fly or a mosquito, have itches?
- Do all salts taste like table salt?
- How can our brain distinguish the sound of a single note vs. a chord?
- Is there any combination of distance, mass, and volume of two planetary bodies where one of them can look like this from the surface of the other?
- If Earth were the same mass but half as dense, would we weigh the same?
- Graph Theory: In a directed graph, how can I find all components of all loops? (head, body, tail)
- Is there much inbreeding in the wider animal kingdom? If so, are there major genetic problems that arise? If not, how is inbreeding avoided?
- How do we quantify wind speeds on gas giant planets?
- Is it possible to create black holes in a ring instead of a spherical object?
- What is the formula for conversion between Celsius and Fahrenheit, how did scientists manage to find this formula initially, and why were only these two units of temperature embraced by science and not any other units that existed in that time?
- Why do radioactive atoms have a half-life where only 1/2 of them decay at a time? Why don't they all decay at about the exact same time?
- Why is the order of attaching electrical leads when jump starting a car significant? As well, why put the disabled cars negative lead to a ground and not to the negative terminal?
- Why does ice in my glass crack after pouring water into it?
- What standard are diseases compared to to determine their rarity?
- You're in orbit around the Earth in a spaceship. You point the pointy end of your spaceship exactly at the center of the earth and fire your engines for 10 sec. What happens to your orbit?
- Why do cows have four stomachs and what does each stomach do?
- Where is all the nuclear contamination from the atmospheric nuclear tests decades ago?
- Why did scientists like Slotin and Daghlian do their criticality experiments manually?
- Why is the dihedral angle 180° and 0° instead of 90° in molecules with sp2-Carbons?
- Can two stars in a binary system orbit each other so closely that they will heat each others' surfaces and change their spectral type?
- When a battery loses its energy as it sits in the drawer, where does that energy go?
| Posted: 10 Aug 2017 11:46 PM PDT We have evolved to have skin colors based on the environment that our ancestors lived in, for example, greater sun exposure in the tropical latitudes meant it was advantageous to have a darker skin. Is there a similar story with eye colors? [link] [comments]  |
| Does an insect, like a fly or a mosquito, have itches? Posted: 10 Aug 2017 11:03 PM PDT |
| Do all salts taste like table salt? Posted: 11 Aug 2017 06:27 AM PDT |
| How can our brain distinguish the sound of a single note vs. a chord? Posted: 10 Aug 2017 09:37 PM PDT I wondered this when I was listening to piano chords on my computer. My headphones produced a singular sound, yet I knew it was a chord compared to when only a single note is played. How can we tell the difference if they are both just single sounds? [link] [comments]  |
| Posted: 10 Aug 2017 10:11 PM PDT Image in question, all credit to the original artist [link] [comments]  |
| If Earth were the same mass but half as dense, would we weigh the same? Posted: 10 Aug 2017 10:31 PM PDT Curious if the increased volume would put us further from the center of mass making gravity less strong at the surface, or if that wouldn't be a factor. [link] [comments]  |
| Graph Theory: In a directed graph, how can I find all components of all loops? (head, body, tail) Posted: 11 Aug 2017 03:55 AM PDT I hope I dont break any rules here, because /r/reverseengineering doesnt like questions, so I try here again. Essentially I have graphs like this and want to indentify all loops (jackson's algorithm) and then find their parts, header = loop start, body = all nodes inside loop, tail = loop conditional node, which does the iteration check. has anyone some good resources or approach on how to solve this? thanks in advance for your time [link] [comments]  |
| Posted: 10 Aug 2017 04:55 PM PDT |
| How do we quantify wind speeds on gas giant planets? Posted: 10 Aug 2017 05:29 PM PDT I recently read that Saturn has wind speeds up to 500m/s. On Earth we measure wind speeds relative to the solid ground, but since gas giants have no solid ground how do we distinguish the speed of their winds from the rotation of the planet itself? [link] [comments]  |
| Is it possible to create black holes in a ring instead of a spherical object? Posted: 10 Aug 2017 07:30 PM PDT |
| Posted: 11 Aug 2017 05:31 AM PDT |
| Posted: 10 Aug 2017 05:18 PM PDT |
| Posted: 11 Aug 2017 05:00 AM PDT |
| Why does ice in my glass crack after pouring water into it? Posted: 10 Aug 2017 11:40 PM PDT |
| What standard are diseases compared to to determine their rarity? Posted: 10 Aug 2017 10:07 PM PDT |
| Posted: 10 Aug 2017 07:26 PM PDT I understand the basics of orbits (falling around the earth and all), but I've been pondering this for a while now. Assume a circular orbit, never mind the atmosphere. Your control system is nimble and keeps your rocket always pointed at the center of (mass of) the earth. My (wrong?) thinking is that since your thrust is perpendicular to your direction of motion, your orbital velocity does not change. Physics says your orbital altitude depends on your orbital velocity. So, when you have your burn, do you dip towards the earth and then...pop back up to the same orbital altitude? [link] [comments]  |
| Why do cows have four stomachs and what does each stomach do? Posted: 10 Aug 2017 04:34 PM PDT |
| Where is all the nuclear contamination from the atmospheric nuclear tests decades ago? Posted: 10 Aug 2017 04:08 PM PDT According to the CTBT, the United States has conducted 219 atmospheric nuclear tests. Did this not cause worry once we knew radiation travels? Are these regions still contaminated? Do we avoid them altogether in flight/sea travel? [link] [comments]  |
| Why did scientists like Slotin and Daghlian do their criticality experiments manually? Posted: 10 Aug 2017 05:51 PM PDT I was reading about the demon core, and I was wondering why the two scientists involved ever attempted to do their experiments manually? Maybe I'm just being a wimp, but I would think of anyone on the planet, Slotin and Daghlian would know best how dangerous that was. I understand that a remote system for doing these experiments was built after the second incident. Is there a reason this wasn't developed and used earlier? [link] [comments]  |
| Why is the dihedral angle 180° and 0° instead of 90° in molecules with sp2-Carbons? Posted: 11 Aug 2017 04:40 AM PDT Shouldn't molecules like ethylene also be in a staggered conformation? [link] [comments]  |
| Posted: 10 Aug 2017 11:41 AM PDT |
| When a battery loses its energy as it sits in the drawer, where does that energy go? Posted: 11 Aug 2017 04:20 AM PDT |
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