- Ethiopia is building the largest hydroelectric power plant in Africa, Egypt opposes the dam which it believes will reduce the amount of water that it gets, Ethiopia asserts that the dam will in fact increase water flow to Egypt by reducing evaporation on Egypt's Lake Nasser, How so?
- AskScience AMA Series: I am a biologist studying invertebrate vision, AMA!
- What exactly do they do with your body when you die, if you're an organ donor?
- Simplified explanations of Sub-refraction and Super-refraction?
- Has Alzheimer's ever been observed in animals?
- Do plants require constant nutrition or do they eat in cycles?
- If the Universe contains everything in exist but is constantly expanding, what exactly is it expanding into and can we exit the Universe?
- Why is the weak force considered to be a force?
- Why do scientists believe that type S seismic waves reappear in the inner nucleus?
- How do zookeepers avoid accidentally domesticating animals in zoos?
- How come water does not flow deep into our ear canal?
- Topologically, how many holes does a t-shirt have?
- If 1+2+3+... can be "regularised" to -1/12, does it follow that 1+4+9+... can be 0 or that 1+8+27+... can be 1/120?
- How does quantum mechanics explain covalent bonds?
- What is the difference between thermal conductivity and thermal conductance?
- What percentage of the light that hits your retina is actually absorbed by it?
- Can we detect absolute zero black bodies with our current telescopes?
- If planets orbit the stars, satellites (moons) orbit planets, can there be something natural also orbiting the moons? How many iterations are possible? Do we know of any?
- How does letting a dish soak with soap and water work?
- Why are long things flexible while short pieces of the same object are rigid?
- Is there any sort of concept of a genomic efficiency, i.e., is there any benefit to having a higher ratio of coding DNA to junk DNA?
| Posted: 22 Jan 2018 03:42 AM PST |
| AskScience AMA Series: I am a biologist studying invertebrate vision, AMA! Posted: 22 Jan 2018 04:14 AM PST My name is Daniel Zurek, I'm a biologist studying invertebrate vision. I investigate how vision-guided behavior and visual system design evolve to match ecological demands, and am particularly interested in the dynamic natural context in which sensory information is gathered. I'm currently based at the University of Cincinnati, after studying in Germany, Australia, and postdocs at Cornell and U Pitt. My current research revolves around the mechanics and evolution of color vision and colorful displays in jumping spiders. I've also studied locomotory attachment devices in insects, and worked with tiger beetles, extremely fast predators that run so fast their eyes can't keep up! My research has been covered by Science, Nature, National Geographic, and a host of major newspapers. Important research questions aside, I just love animals that do cool stuff! I'm an avid macro shooter/filmer and enjoy science communication. I've also spent a lot of time thinking about science crowdfunding, and have worked as a consultant and grant officer for Experiment.com. More about my research at danielzurek.com A NatGeo writeup about one of my research topics: https://news.nationalgeographic.com/2015/05/150518-jumping-spider-color-vision-mating-animals-science/. I'll be on at 6 PM ET (23 UT), ask me anything! [link] [comments]  |
| What exactly do they do with your body when you die, if you're an organ donor? Posted: 21 Jan 2018 03:23 PM PST |
| Simplified explanations of Sub-refraction and Super-refraction? Posted: 22 Jan 2018 03:45 AM PST So I understand how they both effect radar and radio waves but I don't understand exactly why. I know a trapping layer happens because of temperature inversion, but what makes a Super-refractive and Sub-refractive layer? Could someone explain it as simply as possible? [link] [comments]  |
| Has Alzheimer's ever been observed in animals? Posted: 21 Jan 2018 12:00 PM PST |
| Do plants require constant nutrition or do they eat in cycles? Posted: 21 Jan 2018 03:15 PM PST |
| Posted: 21 Jan 2018 07:07 PM PST |
| Why is the weak force considered to be a force? Posted: 21 Jan 2018 11:33 PM PST The electromagnetic and strong forces (and gravity I guess) pushes and pulls and so it it is intuitive that they are called forces. But the weak force does not push or pull as far as I understand it. Is it just a term arising from convention since the fundamental forces arises from symmetries in guage theory? [link] [comments]  |
| Why do scientists believe that type S seismic waves reappear in the inner nucleus? Posted: 22 Jan 2018 04:13 AM PST |
| How do zookeepers avoid accidentally domesticating animals in zoos? Posted: 21 Jan 2018 02:36 PM PST |
| How come water does not flow deep into our ear canal? Posted: 21 Jan 2018 12:07 PM PST |
| Topologically, how many holes does a t-shirt have? Posted: 22 Jan 2018 02:17 AM PST |
| Posted: 21 Jan 2018 03:41 PM PST 0 and 1/120 being the zeta function at -2 and -3? What about 1+1+1+... being replaced by ζ(0)=-1/2? Have these ones ever come up in some useful application? [link] [comments]  |
| How does quantum mechanics explain covalent bonds? Posted: 21 Jan 2018 08:42 AM PST I am studying physics in university right now and my professor mentioned this in class but did not elaborate much. I was wondering how QM explains why atoms covalently bond (need the answer in very layman terms haha) and what was previously thought before quantum mechanics came around? Thanks! :) [link] [comments]  |
| What is the difference between thermal conductivity and thermal conductance? Posted: 22 Jan 2018 12:50 AM PST I've read a few definitions but the two appears to be the same, although the unit for thermal conductivity is written as W/mK while thermal conductance is W/m2 K [link] [comments]  |
| What percentage of the light that hits your retina is actually absorbed by it? Posted: 21 Jan 2018 12:54 PM PST |
| Can we detect absolute zero black bodies with our current telescopes? Posted: 21 Jan 2018 11:10 PM PST A black body is, "an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. ... The radiation is emitted according to Planck's law, meaning that it has a spectrum that is determined by the temperature alone, not by the body's shape or composition."[1] If I'm understanding correctly, a black body at absolute zero would emit no radiation at all. Is this related to antimatter? Could this be where unknown elements have been hiding? https://en.wikipedia.org/wiki/Black_body[1] http://astronomy.swin.edu.au/cosmos/B/Blackbody+Radiation https://www.youtube.com/watch?v=AaFdCvnV8PM [link] [comments]  |
| Posted: 21 Jan 2018 11:02 PM PST |
| How does letting a dish soak with soap and water work? Posted: 21 Jan 2018 02:28 PM PST |
| Why are long things flexible while short pieces of the same object are rigid? Posted: 21 Jan 2018 10:32 AM PST |
| Posted: 21 Jan 2018 11:43 AM PST Is there no sort of penalty for carrying around all that non-coding DNA? [link] [comments]  |
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