when astronauts use the space station's stationary bicycle, does the rotation of the mass wheel start to rotate the I.S.S. and how do they compensate for that? |
- when astronauts use the space station's stationary bicycle, does the rotation of the mass wheel start to rotate the I.S.S. and how do they compensate for that?
- What structural brain changes occur from long term therapeutic use of stimulants?
- Why does the perception of taste seem to be affected by what's eaten just prior?
- I'm hearing that "all bird species are susceptible" to the bird flu that's circulating. Are there any pathogens to which all mammal species are susceptible?
- Does your mouth have a biome of flora? And can it be thrown out of balance?
- Can lahars happen in extremely cold climates?
- How do shipworms bore into wood?
- Are there any studies about how a group reading a text aloud together (e.g. in a church setting) "agree" on a pace and make the words come out at the same time?
- How to differentiate between L. paracase, L.buchneri and L. Zeae using agar?
- do northern lights move as the pole moves?
- How did the early solar system sort itself out?
- Could you determine the height of a tree that had fallen, with no evidence except the root structure and the stump?
- Is driving with overdrive (fifth gear) better than neutral in downhill for fuel consumption?
- Do heavy metals accumulate in seafood over time?
- Catalysts in the microscale synthesis of indigo dye? (Baeyer-Drewson synthesis)
- Can astronauts build muscle in space?
- What does the R_0 value really mean?
- Is a heavy ion with kinetic energy E impacting a proton the same as a proton with kinetic energy E impacting the heavy nucleus in terms of the reaction cross sections?
- Are all ions in an ionic equation aqueous?
- During did the Messinian Salinity Crisis, how would air pressure and climate have been affected?
- Why isn’t the Sun more uniform?
- Do birds sing in certain "keys" consisting of standardized "notes"?
- What was the climate like on ancient Mars?
- What's the lowest atmospheric pressure a human could comfortably survive at, if they were wearing a breathing apparatus?
- How much does our skull change how we actually hear our voice?
| Posted: 19 Apr 2022 07:03 AM PDT |
| What structural brain changes occur from long term therapeutic use of stimulants? Posted: 19 Apr 2022 06:35 AM PDT |
| Why does the perception of taste seem to be affected by what's eaten just prior? Posted: 18 Apr 2022 08:03 PM PDT Note: I am not asking about why orange juice tastes bad after eating something minty for example. These causes can be easily pinned down to what we already know about taste buds. What I am curious about is: if you were to give me bread with mustard and mayo, my reaction would be somewhere between ambivalent and negative. But if you gave me the same thing as the last bite of an italian sub, which I've already eaten the meat, toppings, etc, from, I'll happy eat it and perceive it as nearly as tasty as a bite of the full sub. What is happening to enable this? [link] [comments] |
| Posted: 19 Apr 2022 06:48 AM PDT |
| Does your mouth have a biome of flora? And can it be thrown out of balance? Posted: 18 Apr 2022 07:38 AM PDT I recently had a lower endoscopy done where I needed to consume a ton of Miralax and Gatorade, and ever since then my mouth has seemed off. I've had a bad taste in my mouth, and feel like I get bad breath quicker. It's made me wonder if, just like the gut, does my mouth have a system that can be thrown off balance? [link] [comments] |
| Can lahars happen in extremely cold climates? Posted: 19 Apr 2022 12:54 PM PDT |
| How do shipworms bore into wood? Posted: 19 Apr 2022 12:30 PM PDT I'm having a hard time wrapping my head around shipworms using their shells to eat wood. https://manitobamuseum.ca/archives/3122 On this page I can see a picture of their shells. Do they use them like a little beak to munch away? Like a chisel that scrapes at the rock? Or is it kind of like a file that grinds it down? And then after that, do they just swallow the bits with their mouth? I wish there was a video of them in action, but I'm not sure if there's any footage of this. Thanks a bunch everyone. :) [link] [comments] |
| Posted: 19 Apr 2022 10:27 AM PDT When a group sings or chants together, there is a beat to keep everyone on the same time/pace. In some churches, the congregation reads a text aloud together and somehow finds an acceptable pace together. Are there any studies that have looked at how a group comes to this sort of informal consensus in real time? [link] [comments] |
| How to differentiate between L. paracase, L.buchneri and L. Zeae using agar? Posted: 19 Apr 2022 07:52 AM PDT I have to differentiate between L. paracase, L.buchneri and L. Zeae and I need to enumerate the potency of the three strains. Is there any specific media or anything I can add to the MRS agar used to help differentiate between the three isolates? is there any chromogenic stains I can add to the agar to help? is there any specific media that could inhibit any of the isolates? Thanks [link] [comments] |
| do northern lights move as the pole moves? Posted: 19 Apr 2022 11:29 AM PDT I heard the northern pole is moving slowly towards Russia, does that mean the northern lights move with it? Will people in Canada who can see the northern lights once wont be able to anymore? [link] [comments] |
| How did the early solar system sort itself out? Posted: 18 Apr 2022 06:15 PM PDT Why did the lightest gas, hydrogen, migrate to the center of the "dust cloud?" Why are the rocky planets and the asteroids next, then more gases to form the gas giant planets? It seems the original disc/cloud was complex, so how did it sort? Was it homogeneous initially? [link] [comments] |
| Posted: 19 Apr 2022 10:09 AM PDT This is for a book. A fictional tree that had grown so massive it created it's own archipelago of islands. The islands/roots reach out 3,000 KM, so I'm trying to make the tree a "realistic" height. [link] [comments] |
| Is driving with overdrive (fifth gear) better than neutral in downhill for fuel consumption? Posted: 19 Apr 2022 11:01 AM PDT Is driving with overdrive (fifth gear) better than neutral in downhill for fuel consumption? [link] [comments] |
| Do heavy metals accumulate in seafood over time? Posted: 19 Apr 2022 04:53 AM PDT I am wondering if an adult shrimp will have more accumulated cadmium and arsenic than say a juvenile one? I am trying to find publications about accumulation/increase over time but without success. [link] [comments] |
| Catalysts in the microscale synthesis of indigo dye? (Baeyer-Drewson synthesis) Posted: 19 Apr 2022 06:37 AM PDT I was looking at some microscale dye synthesis methods for a textile project and was wondering if the NaOH involved in the Baeyer-Drewson indigo synthesis experiment is a catalyst (it seems to be on diagrams, but I've yet to see it written as such explicitly), and if it's possible to substitute it for other alkaline solutions and still get a reasonable amount of product in the same timeframe. Thank you in advance! [link] [comments] |
| Can astronauts build muscle in space? Posted: 19 Apr 2022 12:12 PM PDT An earlier question about astronauts exercising to prevent loss of bone density made me wonder how much exercise an astronaut would have to do in space to get stronger? If they need 2.5 hours a day as it is just to prevent getting weaker would like 5 hours lead to muscle growth or would the exhaustion be counter intuitive??? [link] [comments] |
| What does the R_0 value really mean? Posted: 18 Apr 2022 12:07 PM PDT Hey guys, I'm currently reading up on viral outbreaks and I'm asking myself how I need to interpret the R_0 values for different viruses that you can find online. It is the number of people that get infected by one person when no one is immunized and no measures are being taken to contain the virus. So far, so good. But at which timeframe do I need to look at? Let's say that the R_0 value for measles is 15. Does this mean that one person infects 15 people in one day and on the second day 225 people have been infected? Or do I need to take the incubation period into account when looking at the various R_0 values? Assuming that it takes four days for a person that has just been infected with measles to become infectious. Would that mean that it would take 8 days for 225 people to become infected? Thanks! [link] [comments] |
| Posted: 19 Apr 2022 07:11 AM PDT I have been thinking about this because I want to know if the electrical breakdown limitations of DC accelerators can be overcome by accelerating a multiply charged nucleus to get a few times more MeV. [link] [comments] |
| Are all ions in an ionic equation aqueous? Posted: 19 Apr 2022 06:40 AM PDT When writing an ionic equation from simplifying the full equation, are all ions written as being aqueous? Also are solids not separated into ions in the ionic equation and are they just written as their full form? Example full equation : Pb(NO3)2 (aq) + Na2SO4 (aq) = PbSO4 (s) + 2NaNO3 (aq) In the ionic equation for this all the ions are written as aqueous, why? PbSO4 as a product is solid in the full equation, so in the ionic equation it's shown to be a solid and not separated into ions, is this the case for all solids when writing an ionic equation? [link] [comments] |
| During did the Messinian Salinity Crisis, how would air pressure and climate have been affected? Posted: 19 Apr 2022 05:35 AM PDT During the Messinian Salinity Crisis, the Mediterranean Sea was mostly or completely dried out with a giant 10,000 ft deep basin. How would that have affected air pressure for the rest of the world, if I was standing at modern sea level, what would the atmospheric pressure be like? Followup question, how would the air pressure change affect climate on the continents and the snow line of mountains due to adibiadic cooling? [link] [comments] |
| Why isn’t the Sun more uniform? Posted: 18 Apr 2022 01:03 PM PDT I've been seeing a lot of Sun photos lately- flares, spots, canyons, etc. After millions of years, why hasn't gravity or diffusion or a similar process made the Sun homogeneous and uniform in appearance? Or is it, but it's just at such a large scale that even small variations stand out? [link] [comments] |
| Do birds sing in certain "keys" consisting of standardized "notes"? Posted: 17 Apr 2022 06:45 AM PDT For instance, do they use certain standards between frequencies like we have whole steps, fifths, octaves, etc? Do they use different tunings? If so is there a standard for certain species, with all the birds using the same? Are there dialects, with different regions of the same species using different tunings and intervals? If so is this genetic variation or a result of the birds imitating other birds or sounds they hear? Have there been instances of birds being influenced by the standard tunings of human music in that region? Sorry for all the questions in a row and sorry if I got any terminology wrong. I've played the guitar for many years but honestly have only a very basic understanding of music theory and obviously zero understanding of birds. [link] [comments] |
| What was the climate like on ancient Mars? Posted: 18 Apr 2022 05:46 PM PDT Could there be places on Mars that had different temperatures like we have here on Earth. Like some places are cold and some are hot and then it changes seasonally day to day? Also, did ancient Mars have different continents like we do on Earth? Or was the land mass more attached like Pangea? Thanks! [link] [comments] |
| Posted: 18 Apr 2022 06:52 PM PDT So, as I understand it, fully terraforming Mars is essentially impossible for a multitude of reasons, one of which is the extremely low barometric pressure (1% of Earth's). Even if we released all of Mars' trapped gases and did everything else we could to thicken its atmosphere, we could only increase that to 7%. Assuming, just for fun, that the other threats to human survivability on the planet- including the temperature and solar radiation- were somehow fixed, what % of pressure would it take for someone to be able to walk on Mars' surface wearing only a facial breathing apparatus, similar to the face masks worn in the movie Avatar? Is there any partial terraforming worth doing that would make Martian colonization easier? I also wanted to ask the same question regarding Saturn's moon Titan, which has a 1.5 bar atmosphere- the most hospitable anywhere in the Solar System besides Earth. Again, if the temperature wasn't a problem, could someone walk outside on Titan with just a breathing mask? [link] [comments] |
| How much does our skull change how we actually hear our voice? Posted: 17 Apr 2022 12:24 PM PDT According to Brightside:
But I wasn't able to find any numbers anywhere. How much lower does our voice actually sound? If I change the frequency or pitch of my recording, could I change the recorded voice to what I hear in my head? [link] [comments] |
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