How do seeds know which way to grow? |
- How do seeds know which way to grow?
- Does epigenetics play a role in speciation?
- Why does South Africa have so many minerals?
- With all the advantages Solar Sails have over Fuel, why aren’t they being utilized more?
- Do any scientific methods exist to detect old river courses and water paths?
- How does the checkbox captcha work?
- Why do we use lasers instead of electron beams for data storage in things like cds/dvds?
- How are unknown chemicals identified?
- What is the smallest theoretical size a transistor could be?
- What would the discovery of magnetic mono-poles mean mean for Maxwell's equations?
- What determines a sapphire color?
- Is there any way to physically discover if a person has siblings by examining their anatomy, genetics, or any other experiment?
- Do animals suffer from motion sickness?
- How do compiling errors get their messages?
- Did the potato mutate into the sweet potato or the sweet potato mutated into the potato? Or do they come from different spices?
- What are some of the Eastern Gray Squirrel behavior and mannerisms?
- Why do so many human tribes practice such painful rituals? (E.g. tattooing, piercing, scarification, bullet ants)
- How are programming languages built?
- How could I determine where the darkest area on a planet, that is tidally locked to a gas giant would be?
| How do seeds know which way to grow? Posted: 20 Mar 2018 05:00 PM PDT |
| Does epigenetics play a role in speciation? Posted: 21 Mar 2018 06:57 AM PDT I was thinking about how similar neanderthal and our DNA is, and wondered if there were more stark epigenetic differences between us that could explain some of the reduced viability of hybrid offspring. In any case, it got me wondering if, in general, epigenetic changes like DNA methylation were in part responsible for reproductive isolation and the beginnings of speciation, i.e. differential methylation that gives positive fitness for two different groups in the same species but negative fitness when hybridized could result in less successful crossing between the groups. I found a paper that I think supports this idea, but I'm not an expert in this field and also don't know how much of an outlier this paper is. Also, even if this happens, I don't know how common it is or how big a role it is thought to play in speciation. [link] [comments]  |
| Why does South Africa have so many minerals? Posted: 20 Mar 2018 10:10 AM PDT I'm taking an intro to geology course on minerals/gems and there seems to be like everything in South Africa: PGE's, diamonds etc. What is it about RSA's location(?) that makes it so mineral rich? [link] [comments]  |
| With all the advantages Solar Sails have over Fuel, why aren’t they being utilized more? Posted: 20 Mar 2018 12:25 PM PDT |
| Do any scientific methods exist to detect old river courses and water paths? Posted: 20 Mar 2018 10:45 AM PDT Please elaborate on any methods(if they exist) to detect/predict river networks of olden civilizations (5000 years old). [link] [comments]  |
| How does the checkbox captcha work? Posted: 20 Mar 2018 08:47 AM PDT |
| Why do we use lasers instead of electron beams for data storage in things like cds/dvds? Posted: 21 Mar 2018 05:57 AM PDT I know that the wavelength of electrons is considerably smaller than that of visible light, which is why it is used for electron microscopy. Wouldn't the smaller wavelength mean that it could be used for higher-density storage than visible light? Why have I not heard of a an electron beam based storage device? [link] [comments]  |
| How are unknown chemicals identified? Posted: 20 Mar 2018 08:56 PM PDT As you may have heard, Russian president Vladimir Putin is once again projecting aggression to the world by murdering another ex spy in Britain with a chemical weapon. The OPCW has stated it will take 2-3 weeks to identifythe chemical used in the attack. However, the British government was able to identify the chemical and where it came from just hours after the attack happened. How are these chemicals identified? And why does the OPCW, the international body set up to do this exact task, not use the same advanced equipment that the British government to do their job in a fraction of the time? [link] [comments]  |
| What is the smallest theoretical size a transistor could be? Posted: 21 Mar 2018 05:39 AM PDT I'm an electronics technician, so I wonder: how many atoms wide could we make computer transistors? It has to be larger than one to allow for doping of the junctions. [link] [comments]  |
| What would the discovery of magnetic mono-poles mean mean for Maxwell's equations? Posted: 20 Mar 2018 09:07 PM PDT My understanding is that Maxwell's equations don't support the existence of magnetic mono-poles as they are (magnetic flux through closed surface is always 0). Could the laws be rewritten to describe mono-poles or would the discovery of such magnets change our understanding of EM completely? [link] [comments]  |
| What determines a sapphire color? Posted: 20 Mar 2018 02:21 PM PDT |
| Posted: 20 Mar 2018 02:16 PM PDT Obviously doesn't include asking the person :P Any other experiment could include some test of electromagnetic waves or wave response from some part of their body etc.. [link] [comments]  |
| Do animals suffer from motion sickness? Posted: 20 Mar 2018 02:05 PM PDT |
| How do compiling errors get their messages? Posted: 20 Mar 2018 03:24 PM PDT When compiling a program in an IDE, how does it know where the error is and what went wrong? Does it use regex to look for common errors or something along those lines? [link] [comments]  |
| Posted: 20 Mar 2018 09:01 AM PDT |
| What are some of the Eastern Gray Squirrel behavior and mannerisms? Posted: 20 Mar 2018 03:26 PM PDT There is a male squirrel (and sometimes a female) that I often see outside my window and for some reasons I love watching their behaviour and personality. I was wondering if anyone could give me some more info on there behaviour. I have watched and researched about them a bit but I was wondering if anyone could provide me with more detailed information such as their mannerisms and suddler behaviours or even some good artical about them. [link] [comments]  |
| Posted: 20 Mar 2018 02:32 AM PDT |
| How are programming languages built? Posted: 20 Mar 2018 10:49 AM PDT |
| Posted: 20 Mar 2018 06:01 AM PDT I am Trying to write a story that takes place on a planet that is tidally locked to a gas giant. My idea requires an area on the planet that is darker for longer then the other areas. Is there a way to determine where the darkest area of this planet would be, taking into account reflected light from the gas giant, as well as the sun? [link] [comments]  |
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