How does radiometrically dating rocks work if all radioactive isotopes came from super novae millions of years ago? Wouldn't all rocks have the same date? |
- How does radiometrically dating rocks work if all radioactive isotopes came from super novae millions of years ago? Wouldn't all rocks have the same date?
- Does a break up of a supercontinent cause volcanic eruptions sort of like a nuclear winter?
- What is the difference between absorption and adsorption?
- How does the phase between the electric and magnetic field components of an EM-wave radiating from an antenna behave?
- What are the purpose of toenails and fingernails; why do they cover such a small area if they’re important?
- Why are xenoestrogens (chemicals that mimic estrogen) so much more abundant than xenoandrogens (compounds similar to testosterone)?
- Do snakes have a set number of bones? Or would a longer snake of the same type/species just have bigger or longer bones?
- What are the deciding factors in the frequencies of seismic waves from earthquakes?
- What happens when neutron stars in binary systems gain a critical mass from their donor star?
- How does the diameter of a particle accelerator influence its function? Is bigger always better, and if so, why?
- How long did it take the last dinosaurs to die out after the Chicxulub impact event? Was it an immediate extinction event? Did it take months or even years?
- How are artifical sweeteners digested by the body?
- Why don’t we use nitrogen for fire extinguishers, mostly because it would displace oxygen and it is more prevalent in the atmosphere?
- How do our minds retrieve memories that consciously we've forgotten?
- If period 8 ever becomes a reality, would the line separating metals and non metals end with Oganesson?
- How do plants move without muscles or brains?
- Why might UTIs (urinary tract infections) have a drastic affect on mental health? What is the link?
- Is there any peculiarity about the places a supercontinent splits (e.g. the Atlantic coastlines of Africa and South America) or is it just about the subterranean magma flow?
- Why do CO2 bubbles in champagne appear in a non-random fashion?
- (Human Body) Can antibiotics be delivered directly to the bladder to treat infection?
- Différence between sound waves and light waves when it comes to obstacles?
- Are hazel eyes technically heterochromatic?
- How do you return an electron into a state of superposition?
| Posted: 12 Jan 2020 05:45 AM PST |
| Does a break up of a supercontinent cause volcanic eruptions sort of like a nuclear winter? Posted: 11 Jan 2020 12:06 PM PST I was thinking about the break up of Pangea today and was wondering when a supercontinent breaks apart would it cause a nuclear winter to occur? Is it possible that a supercontinent break could a mass extinction? [link] [comments]  |
| What is the difference between absorption and adsorption? Posted: 12 Jan 2020 05:41 AM PST |
| Posted: 12 Jan 2020 05:41 AM PST As the two components are in phase for the far-field, but have a 90° shift in the near field due to the maxwell-equations, what do these equations predict between these special cases? Is there an analytic way to solve that problem? [link] [comments]  |
| Posted: 12 Jan 2020 12:39 AM PST |
| Posted: 12 Jan 2020 01:36 AM PST |
| Posted: 11 Jan 2020 03:58 PM PST Recently saw a picture of a snake skeleton and was asking myself this question. Figured I'd ask the experts. [link] [comments]  |
| What are the deciding factors in the frequencies of seismic waves from earthquakes? Posted: 11 Jan 2020 11:01 PM PST You generally learn about tuned mass-spring damper systems in intro physics/engineering classes and how they are used in buildings etc to prevent vibrations and avoid resonance at particular frequencies. The dampers must be tuned to specific frequencies; how do we know which frequencies to tune those dampers for? Are they predictable or consistent eg. around some area or given knowledge of the ground underneath? Are they invariant to the specific earthquakes/seismic wave sources and only related to the local area around the building? [link] [comments]  |
| What happens when neutron stars in binary systems gain a critical mass from their donor star? Posted: 12 Jan 2020 12:58 AM PST When a white dwarf is in an interacting binary system with a main sequence star, it will accrete material from that star, which it eventually coughs up in a nova from time to time, and in extreme cases will eventually become a type Ia supernova. That's a pretty well established process in astronomy, but what about neutron stars? They aren't exactly incapable of accreting materials from donor stars, and they eventually have to have some hard mass limit before becoming a black hole. Is there any sort of catastrophic explosive event predicted much like a white dwarf? or will the neutron star simply quietly collapse with little to no fanfare. And furthermore, will a neutron star ever hiccup and make a sort of neutron star nova? [link] [comments]  |
| Posted: 12 Jan 2020 12:30 AM PST Looking over the history of particle accelerators, as they advanced, they seem to get bigger and bigger. What precisely does the extra size afford the accelerator? Aren't the particles being accelerated incredibly tiny sub-atomic particles? Beyond a certain sufficient size to support the needed equipment, why would it be necessary to make them ever larger? Why isn't it sufficient to just increase the power of existing accelerators? [link] [comments]  |
| Posted: 11 Jan 2020 04:42 PM PST |
| How are artifical sweeteners digested by the body? Posted: 12 Jan 2020 03:46 AM PST |
| Posted: 11 Jan 2020 08:45 PM PST |
| How do our minds retrieve memories that consciously we've forgotten? Posted: 11 Jan 2020 05:39 PM PST My dad called me today asking for a 4 digit code on a bike lock that I haven't used, let alone seen in over 5 years. It's a lock with 4 digits, each between 1-6 which gives almost 1,300 possibilities. I can't picture the lock in my head or anything but 4 numbers came to my head seemingly out of nowhere and they were correct. When I tried to actively think of numbers I couldn't think of any at all but my first thought with the 4 numbers were correct. How can this be and how can our mind retrieve memories that I consciously have completely forgotten about? [link] [comments]  |
| Posted: 11 Jan 2020 06:21 PM PST On that same topic, if another element came to be found in period 8, group 18, would it be a noble gas still? If the like ends with Oganesson on top, and noble gases are all group 18, would element 136(?) be a noble gas still? [link] [comments]  |
| How do plants move without muscles or brains? Posted: 11 Jan 2020 04:01 PM PST I assume it's kinda similar to hydraulics but in the case of sun flowers and Venus flytraps what is taking in the information that there's a bug or sunlight present and what's interpreting that info into movement without a brain [link] [comments]  |
| Why might UTIs (urinary tract infections) have a drastic affect on mental health? What is the link? Posted: 11 Jan 2020 05:15 AM PST I've seen articles online linking UTIs with behavioral changes (particularly in older adults) but am not seeing much that explains the mechanism or link between the two. [link] [comments]  |
| Posted: 11 Jan 2020 09:28 PM PST |
| Why do CO2 bubbles in champagne appear in a non-random fashion? Posted: 11 Jan 2020 04:11 PM PST I'm sitting here sipping a glass of sparkling wine and wondering why the carbon dioxide bubbles coming out of solution are not emanating randomly. Instead, as we've all seen, there are parts of the glass where more bubbles are forming. In some places, the bubbles even appear in neat vertical lines. What causes this to be a non-random situation? I'm guessing it might be due to the inside of the glass, on a microscopic level anyway, not being completely smooth. Any thoughts from an expert? [link] [comments]  |
| (Human Body) Can antibiotics be delivered directly to the bladder to treat infection? Posted: 11 Jan 2020 10:28 PM PST What are the most state of the art techniques currently being used or studied to treat bladder infections in this way? [link] [comments]  |
| Différence between sound waves and light waves when it comes to obstacles? Posted: 11 Jan 2020 02:00 PM PST Firstly, sorry for bad English, it's not my first language. Ok si, why, when standing behind something, a wall for example, does sound reach us fine but light doesn't and instead there's the wall's shadow? I get that light can't go through solid objects, but why can sound waves? Or is there another explanation I'm not thinking of? Thanks! [link] [comments]  |
| Are hazel eyes technically heterochromatic? Posted: 11 Jan 2020 02:20 PM PST Not sure if this is the right place but can't find any other. My eyes are hazel but the colors don't diffuse well, there's a clear border between brown and green. Is there a distinction between hazel eyes and heterochromia, and are all hazel eyes heterochromatic? [link] [comments]  |
| How do you return an electron into a state of superposition? Posted: 11 Jan 2020 06:28 PM PST Measuring spin would collapse it out of superposition. Is there a process to "undo" this? [link] [comments]  |
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