Is it likely that we will or could potentially find large deposits of metal on Mars like we would on Earth? |
- Is it likely that we will or could potentially find large deposits of metal on Mars like we would on Earth?
- Why does talking on the phone become difficult if you hear the feedback of your own voice due to connection issues?
- Is there a limit on how much energy superconductors can transmit?
- Does every star have an Oort Cloud?
- How do satellites like Voyager 2 know where to aim their lense?
- Do monks who take vows of silence lose muscle tone in their tongue? If so, what are some consequences of this and what would happen if they ended their silence?
- Why does air from a fan or wind make us feel cold?
- When lens flare makes a starburst around a bright light source, what determines how many points it has?
- What's the difference between freezing and congealing?
- Why does hypotension cause efferent renal vasoconstriction?
- How much RF exposure is too much?
- How did mortality rates affect life expectancy in ancient times?
- The Oort cloud extends (theorotically) till about 3.2 ly from sun. What does this say about its proximity to Alpha Centauri's Oort cloud ?
- If dark matter is suspected to interact via nuclear recoils, how is it differentiated between a background nuclear recoil interaction?
- Why is it okay to take acetaminophen while pregnant, but taking ibuprofen can seriously harm your baby?
- Why are quantum fields quantized?
- Why is carbon dioxide used in fizzy drinks and not another gas?
- Did eyes evolve only once on Earth? Is there something about the small band of "visible" light that makes it optimal for eyes to evolve to see? Or is it just a coincidence that most animals see in the same spectrum?
- How do we know that we have only discovered 5% of all sea life? Is this even true?
- How can vacuum and earth's atmosphere exist side by side?
- Are there any facts that animals (probably monkeys?) cheated, broke the rules or disobey them during experiments in order to get an advantage?
- Can you catalyze a nuclear reaction? Do catalysts exist in nuclear physics?
| Posted: 10 Dec 2018 09:54 AM PST I'm curious because Earth only has a finite amount of metals, if we colonized Mars or say a moon of Jupiter, how likely would it be to find the same metals there that we find here on earth such as gold, silver and iron? Would we potentially find a new metal or element? [link] [comments]  |
| Posted: 11 Dec 2018 08:03 AM PST I work in IT, and I spend a lot of time on the phone. Every once in a while, people will have phone issues and as I talk to them, even though they can hear me and I can hear them, I will hear the almost immediate feedback of my voice saying everything I just said. At least for me, it makes it very confusing and difficult for me to keep the conversation going coherently because I have to really think about what I'm saying and there tends to be a lot of pauses as I speak. Is this a common phenomenon, and why does it happen? [link] [comments]  |
| Is there a limit on how much energy superconductors can transmit? Posted: 11 Dec 2018 07:29 AM PST If we were able to make a roomtemperature/pressure superconductor and use it instead of these 400kV landlines, can the superconductor just be as thick as a finger? Or as thin as a hair? [link] [comments]  |
| Does every star have an Oort Cloud? Posted: 10 Dec 2018 10:52 AM PST |
| How do satellites like Voyager 2 know where to aim their lense? Posted: 10 Dec 2018 11:33 PM PST Does NASA program it to just flail about and hope it captures something? [link] [comments]  |
| Posted: 11 Dec 2018 02:08 AM PST |
| Why does air from a fan or wind make us feel cold? Posted: 11 Dec 2018 08:05 AM PST What's the molecular-level reasoning behind it? I would think that air molecules being pushed into others at a fast speed would create some sort of momentum when colliding into other particles, both the fast air and the collisions, in turn, creating heat. [link] [comments]  |
| Posted: 11 Dec 2018 07:49 AM PST |
| What's the difference between freezing and congealing? Posted: 11 Dec 2018 05:22 AM PST When coconut oil solidifies I'm assuming it's just freezing, but when gelatin solidifies is it a non-crystallin structure? How does coagulation fit into this? [link] [comments]  |
| Why does hypotension cause efferent renal vasoconstriction? Posted: 11 Dec 2018 04:18 AM PST So basically, during hypotension the blood flow to the kidney is decreased. This causes the kidney to activate the RAAS, which causes efferent vasoconstriction and that results in increased glomerular outflow. Doesn't this lead to more fluid getting filtered and diuresis, thereby reducing the blood volume and further aggravating the hypotension? So shouldn't hypotension reduce GFR? [link] [comments]  |
| How much RF exposure is too much? Posted: 10 Dec 2018 09:28 PM PST Hi, I'm here today wondering how much RF exposure, especially while sleeping, is harmful. I haven't found any straight answers online, and was wondering if anyone here could help out. I've heard under 1.5, but wasn't sure if that was accurate. [link] [comments]  |
| How did mortality rates affect life expectancy in ancient times? Posted: 10 Dec 2018 11:39 PM PST It's easy to say early humans had a life expectancy of (say) 30 years, but this is from birth and does not acknowledge that most mortality was in infancy. So if you still managed to make it to puberty, what age could you then expect to reach? In other words, what ages were the elders of ancient tribes? [link] [comments]  |
| Posted: 11 Dec 2018 05:23 AM PST |
| Posted: 10 Dec 2018 11:21 PM PST Specifically, in the XENON1T device, they look for dark matter through weakly interacting massive particles (WIMPs) which are hypothesized to interact by nucleus collision (rather than electron collisions), so they look for nuclear recoils. How is this differentiated between any other low energy nuclear recoil from background? They say they use a calibration source to see the detector's response from known nuclear recoils, but since the recoiled nucleus energy is a spectrum, how would we know if a WIMP interaction yielded a similar nucleus recoil energy? Here is a link to the study you are also interested: https://arxiv.org/pdf/1705.06655.pdf [link] [comments]  |
| Posted: 10 Dec 2018 02:59 PM PST Hi r/askscience! I'm newly pregnant and have been going through the many lists of things you're not supposed to have while pregnant. I was surprised to find that acetaminophen was okay, but ibuprofen was not. I'm really curious as to specifically why this is. I remember learning in intro biochem a long (long!) time ago they act on slightly different COX enzymes, but when I tried to search why ibuprofen is so harmful to a developing fetus, I just got a thousand mommy websites saying just to not take it. I'm really curious as to the specific biochemical processes that makes one totally safe and the other very, very not safe. Thank you so much in advance for your insight! [link] [comments]  |
| Why are quantum fields quantized? Posted: 10 Dec 2018 08:31 PM PST I know it may sound silly, but for example, if you put an electron in a box it will have only permitted energies depending on the size of the box. If the electron was free, it could have any energy. So my question is, what makes an excitation on a quantum field (particles) quantized? [link] [comments]  |
| Why is carbon dioxide used in fizzy drinks and not another gas? Posted: 10 Dec 2018 12:07 PM PST Why not use nitrogen which is a more abundant or another gas? [link] [comments]  |
| Posted: 10 Dec 2018 11:27 AM PST I have heard of animals that see infrared & ultraviolet. But they all see (or so I think) the same frequency of light we see. Would an alien eye be more or less likely to see nothing in our "visible" band of light because it sees a higher or lower frequency? If eyes evolved once, it may be that the commonalities are just happenstance and not due to some inherent quality about the small band of frequency of light we can see. [link] [comments]  |
| How do we know that we have only discovered 5% of all sea life? Is this even true? Posted: 10 Dec 2018 03:12 PM PST Does this mean that 95% of sea life is in extreme zones that are impossible to reach? Or that oceans are just so big we can't explore it all because money/time? Are we talking microbes? or big sea creatures? [link] [comments]  |
| How can vacuum and earth's atmosphere exist side by side? Posted: 11 Dec 2018 03:39 AM PST |
| Posted: 10 Dec 2018 11:45 PM PST I wonder if some of them tried to outsmart either their inmates or the experimenters. [link] [comments]  |
| Can you catalyze a nuclear reaction? Do catalysts exist in nuclear physics? Posted: 10 Dec 2018 06:38 PM PST I've been doing research on chemistry, and I've learned about catalysts, chemicals that can cause a reaction in other chemicals that would not normally react with one another (or would do so very slowly) left to their own devices. To make plastic, for example, very large pressures and temperatures are needed. Unless you have a catalyst. Sort of like nuclear fusion. That got me thinking: if there are catalysts for chemical reactions, are there catalysts for nuclear ones? [link] [comments]  |
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