Is it possible for a star to be cold? |
- Is it possible for a star to be cold?
- Why is a full circle 360 degrees? Why not just a round number like 100 or any other number?
- On a molecular level why is inhaling Cyanide (HCN), even in small amounts, so dangerous to humans?
- When did we first hypothesize that most galaxies have a supermassive black hole at the center?
- Why is my salt leaving my salt shaker?
- Is there a name for all animals that lay eggs?
- If tectonic plates didn't move, would Hawaii be taller than Olympus Mons?
- Does meteoric water infiltration significantly affect fault characteristics?
- Pythagorean triples: what is the geometric meaning of Euclid's formula?
- How accurate is the concept behind Discovery's "Sonic Sea"?
- Sterilisation and hysterectomy?
- If current is the flow of electrons why does it flow in the opposite direction as electrons?
- Does the temperature of water affect it's viscosity?
| Is it possible for a star to be cold? Posted: 15 May 2016 09:15 AM PDT If it is, is the limit absolute zero? And a follow-up, is there any limits on how HOT things can be? [link] [comments]  |
| Why is a full circle 360 degrees? Why not just a round number like 100 or any other number? Posted: 15 May 2016 10:05 AM PDT |
| On a molecular level why is inhaling Cyanide (HCN), even in small amounts, so dangerous to humans? Posted: 15 May 2016 05:59 PM PDT At least with Carbon Monoxide it takes a lot to really do damage but Cyanide seems like one whiff is enough. [link] [comments]  |
| When did we first hypothesize that most galaxies have a supermassive black hole at the center? Posted: 15 May 2016 07:06 PM PDT I know that Maarten Schmidt discovered the first quasar in 1963, and astronomers wondered how it could be so bright being so far away (2.5 billion light years), which led them to hypothesize that it could be powered by an accretion disk spinning around a supermassive black hole. How did we make the jump from there to the general acceptance that all or most galaxies have a supermassive black hole at the center? [link] [comments]  |
| Why is my salt leaving my salt shaker? Posted: 15 May 2016 04:02 PM PDT The salt is slowly climbing up the wall of the shaker and out the lid. What chemical process is causing this to happen? http://imgur.com/On9qSsk [link] [comments]  |
| Is there a name for all animals that lay eggs? Posted: 15 May 2016 04:49 PM PDT What's the word for all the fish, birds, reptiles, and amphibians that lay eggs, or anything that isn't a mammal. [link] [comments]  |
| If tectonic plates didn't move, would Hawaii be taller than Olympus Mons? Posted: 15 May 2016 06:07 AM PDT Assuming that Hawaii was still continuously fed by mantle material. Or would gravitational instability prevent such heights? [link] [comments]  |
| Does meteoric water infiltration significantly affect fault characteristics? Posted: 16 May 2016 01:37 AM PDT A 2016 paper looking at meteoric water input into the Alpine fault of New Zealand has a weakish byline in its summary stating: "Focused fluid flow through the Alpine Fault zone may promote fault weakening by facilitating the formation of weak secondary minerals and promoting the generation of high pore fluid pressures or pressure compartmentalisation" Does the paper/any evidence available strongly promote the theory? Do you think that the effect significantly affects fault characteristics? For example, might it reduce the critical stress required to rupture, and therefore the magnitude of ruptures? http://www.sciencedirect.com/science/article/pii/S0012821X16301418 [link] [comments]  |
| Pythagorean triples: what is the geometric meaning of Euclid's formula? Posted: 15 May 2016 03:03 PM PDT Euclid's algorithm for generating Pythagorean triples is well known --
The algebraic validity of this is pretty obvious, but do m and n in this formula have any geometric meaning? If I'm looking at a right-angled triangle ABC, can m and n be made to correspond to anything in the diagram? [link] [comments]  |
| How accurate is the concept behind Discovery's "Sonic Sea"? Posted: 15 May 2016 01:40 PM PDT I just saw this video on Facebook which details the ways in which humans add noise pollution to the ocean. The trailer definitely does its best to make the problem sound really bad, but it seems to me as though the vastness of the ocean would make human noise pollution a pretty insignificant problem for whales and other species that rely on sonic communication. Have there been any studies that have definitively demonstrated that ships and/or oil prospecting provide a significant disruption to whales' (or other marine species') ability to communicate? [link] [comments]  |
| Sterilisation and hysterectomy? Posted: 15 May 2016 03:22 PM PDT Context: Roughly in the '60s and '70 disabled female residents living in institutions in Japan were sterilised without consent. I have a source which speaks about sterilisation and a source which uses the term "hysterectomy". Can hysterectomy be a way of sterilisation or are they two different things? I'm confused if they used both (unmentioned) ways of sterilisation and hysterectomy, or only the later. The reason stated in both sources is that it was done to ease (the menstrual pain and) the workload of the workers. Also gave the institutions free guinea-pigs since the parents' had usually signed a waiver that gave permission to perform any surgeries on residents. It's terrible I know. (English isn't my first language and I'm not that familiar with this sort of terminology. Sorry and thanks!) [link] [comments]  |
| If current is the flow of electrons why does it flow in the opposite direction as electrons? Posted: 15 May 2016 10:21 AM PDT I know that electrons go from negative to positive because of electrostatic repulsion and electrons carry a -ve charge. But my textbook says that current is the "flow of electrons", wouldn't that mean it also flows from negative to positive? [link] [comments]  |
| Does the temperature of water affect it's viscosity? Posted: 15 May 2016 06:32 AM PDT |
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