When a person gets into an accident of some sort and gets an open wound, that dirt, gravel, sand, etc. then goes into, how do hospitals clean the wound and stop infection? |
- When a person gets into an accident of some sort and gets an open wound, that dirt, gravel, sand, etc. then goes into, how do hospitals clean the wound and stop infection?
- Is there evidence that psychotherapy by a professional is effective compared to a control group in which the professional is replaced with a random person? Or with a book or similar text-based method?
- Betelgeuse. I have read were it has finished burning hydrogen and passed to exclusively burning helium but we are not sure if it has started carbon burn (because neutrino signal too week to tell). But how do we know it moved to exclusively burning helium?
- Why weren't these fossils cover by lava and ash?
- How do computers/calculators find the square roots of numbers?
- If you drop a ball at different strengths of gravity, how would their bounces compare?
- What happens when you test the intermediate axis theorem in 4 dimensions? Can it even happen, since there are two, or do they both rotate?
- How does depth factor into magnitude of water particle motion in ocean waves?
- Can non-aquatic birds hold their breath, and if so for how long?
- Why exactly does electroconvulsive therapy result in memory loss?
- Are there arcs of a rainbow that are 'warmer' because they are refracting infrared light?
- what is snot exactly? what's happening to my nose and respiratory apparatus during a cold?
- What does the Partition Function actually mean in a physical sense? Why does it contain all the information for the thermodynamical properties of the system?
- Why are high divers okay jumping into water from high up, but jumping off a bridge will kill you?
- What ultimately causes a balloon to pop when a match is put up to it?
- How do we know how far away something is?
- What is the frequency of light given off by an atomic bomb and what factors determine the frequency of light?
- How are commercial scale cooked products made safe to store?
- Did Ancient Scribes Suffer From Carpal Tunnel Issues?
- Why aren't stents removed after some period of time?
| Posted: 29 Dec 2019 07:27 PM PST |
| Posted: 29 Dec 2019 07:52 PM PST |
| Posted: 30 Dec 2019 01:03 AM PST We know shell activity gives no conclusive information about core activity so most astronomers think the current change in luminosity is simply part of the regular dimming cycle. Does that statement of no conclusive information also extend to spectral analysis of the shell? edit *yes, burn may not be the right term, but you know what I mean. [link] [comments]  |
| Why weren't these fossils cover by lava and ash? Posted: 29 Dec 2019 06:37 PM PST We are told that the last eruption of Yellowstone's Super-volcano was 640,000 years ago. The Teton Range, which borders Yellowstone, started rising up from the plain some 9 million years ago. The Tetons are full of sea fossils and petrified wood. One boulder field in particular (which sits at at about 10,000 feet elevation) has thousands of visible fossils that are from the Cambrian period, which would have been deposited on the ocean floor some 2.5 billion years ago. My question is this: if the Tetons began their appearance 9 million years ago, and those fossils started at the bottom and were then forever on the top of the Teton Range, why were all of these fossils not covered by lava and ash during Yellowstone's last eruption? Could the Tetons be younger than suspected? Or did Yellowstone blow a lot longer ago than science tells us? Give me your thoughts/theories! I have asked this to geologists, volcanologists, and paleontologists, and none of them have had an answer. [link] [comments]  |
| How do computers/calculators find the square roots of numbers? Posted: 29 Dec 2019 08:10 PM PST |
| If you drop a ball at different strengths of gravity, how would their bounces compare? Posted: 29 Dec 2019 09:38 PM PST Let's say you drop a ball on the moon and the earth with the same starting height, would they bounce back up to different heights? [link] [comments]  |
| Posted: 29 Dec 2019 01:41 PM PST |
| How does depth factor into magnitude of water particle motion in ocean waves? Posted: 30 Dec 2019 01:34 AM PST I have recently being trying to understand ocean waves, and the forces involved, here for starters. If we imagine a shallow divider fixed in the ocean, as crudely shown below. Will the section of water confined in A, while being open to air above and water below, still rise and fall as normal? As I understand it yes. What will happen if we extend the divider deeper towards the ocean floor, but not reaching it, will the motion of the water confined in A now change, and how? ~ ~ | — | ~~~~~~ ➡️wave direction ——————— [link] [comments]  |
| Can non-aquatic birds hold their breath, and if so for how long? Posted: 29 Dec 2019 04:49 PM PST To narrow things down I'm specifically wondering if a starling could hold its breath for any period of time. I haven't managed to find any useful answers online which aren't specifically for aquatic birds. Sources would be appreciated as well if possible. [link] [comments]  |
| Why exactly does electroconvulsive therapy result in memory loss? Posted: 29 Dec 2019 11:47 PM PST |
| Are there arcs of a rainbow that are 'warmer' because they are refracting infrared light? Posted: 29 Dec 2019 01:58 PM PST Rainbows obviously refract visible light at different wavelengths. I assume this refraction continues on the rest of the electromagnetic spectrum, including infrared light. My understanding is that infrared light is synonymous with heat. Therefore, would the area of a rainbow beyond the red arc, which would logically refract infrared light, be measurably warmer? [link] [comments]  |
| what is snot exactly? what's happening to my nose and respiratory apparatus during a cold? Posted: 29 Dec 2019 12:30 PM PST what is snot exactly? where is it made? what's it purpose? why do I get it during a cold? The way I "feel" it it's being secreted in my nasal cavities, but is it? My best guess would be it helps keeping the viral infection in my respiratory tract in check, is that correct? how exactly does it achieve that? After I wake up I'm clogged with it, and it seems like it gets a bit harder and less fluid, it also changes color, from whiteish to yellowish, is it sitting in my nasal cavity and throat and "hardens" there? when I blow it feels like it's reaching my ears, and then slowly trickels down again, is this what's happening?is it actually getting all the way to my ears? If I suck it in instead of blowing it it then feels like a small portion of it actually gets in my throat, is that what's happening? that doesn't sound like it's a good idea to do, is it? and what about the mucus that I cough up during a cold, is that the same as the snot I blow from my nose? that feels like it's coming straight from my lungs, is it? [link] [comments]  |
| Posted: 29 Dec 2019 12:14 PM PST I mean this from the perspective of statistical mechanics: I get that the partition function is the "Normalization factor" of the probability calculation for the different states. But I don't get why does that mean that we can derive a system's energy, etc. so easily from it. Is this just a result of some algebraic miracle (that somehow the calculation for the average energy by traditional methods coincides with the one using the partition function)? Or is there some deeper meaning to the partition function that makes it as useful as it is? [link] [comments]  |
| Why are high divers okay jumping into water from high up, but jumping off a bridge will kill you? Posted: 29 Dec 2019 12:39 PM PST |
| What ultimately causes a balloon to pop when a match is put up to it? Posted: 29 Dec 2019 07:04 PM PST |
| How do we know how far away something is? Posted: 29 Dec 2019 12:57 PM PST I recently saw a post of a needle galaxy that's 50 million light years away. So how do we know that it's that far away? Another question that comes to mind: Does light always travel in a linear path? [link] [comments]  |
| Posted: 29 Dec 2019 08:46 AM PST |
| How are commercial scale cooked products made safe to store? Posted: 29 Dec 2019 05:53 PM PST So it's pretty common knowledge that if you cook something like chicken, and leave it out on the bench at room temperature for a day or two, it may be dangerous to eat. If you refridgerate it, it's good for a few days, and if you freeze it, it can be good for a while. I understand this is because dangerous bacteria live and breed in certain temperatures (I was always told 5-60c), and if you ingest a large enough mass of those bacteria, they'll mess you up? I've read online that if you cook something yourself and freeze it, it'll stay good for up to 6 months. But if you go out and buy a frozen dinner from the supermarket, it usually has a use by date a year or two into the future. The last few years the supermarkets around me have started to stock 'fresh' refridgerated meals, that don't come frozen. If I cook a curry or something and put it in the fridge, it can start to go bad after 4-5 days, but most of these supermarket meals have use by dates into the weeks, sometimes as high as 3 weeks. Even more recently (like last month or so), I've started to see completely unrefridgerated versions of these meals. Things like chicken curries that have a use by date of 6 months (!!!). So my question is, what technology do companies use to achieve these gains in the food storage space? I'm particularly interested about the unrefridgerated stuff, since it's appeared in my area recently. Has there been new advances in food science that the general public might not be aware of? [link] [comments]  |
| Did Ancient Scribes Suffer From Carpal Tunnel Issues? Posted: 29 Dec 2019 10:52 AM PST Working on a keyboard/mouse can give us life-long injuries... I'd imagine working with pen/paper or stone/chisel as a job- they'd have some problems as well. Is there anything we know about that is mentioned in ancient texts about scribe's hand/wrist/arm being in pain from the job? [link] [comments]  |
| Why aren't stents removed after some period of time? Posted: 29 Dec 2019 08:58 AM PST When a patient gets implanted with stents, why arent the stents removed and why are they permanent. shouldn't the plaque buildup in the arteries have been broken down by then? [link] [comments]  |
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