Why is it that when a person gets kidney stones, he/she has a risk of getting stones again? |
- Why is it that when a person gets kidney stones, he/she has a risk of getting stones again?
- What type of porcelain glaze reduces surface tension?
- Are there any animals that migrate south for the summer and north for the winter?
- Does nuclear fusion happen in the corona?
- How long does it take for fossil fuels to regenerate?
- Can monoclonal antibodies be used to target T memory cells?
- How accurate can we get when measuring the speed of light? Wouldn't time be slower in one zone than another zone as the light travels, therefore make the measurements of it inconsistent?
- I understand that astronauts inside the ISS are free falling. What about the Apollo Astronauts?
- Why does beverage carbonation create a prickly sensation on the tongue?
- How much do different subregions of the brain differ in gene expression?
- How do we measure the specific gasses in an enclosed space?
- When a spacecraft gets a hole in it why does the air get sucked out so fast?
- How does radiation affect the nucleus of an atom?
- Do migraines increase vascular risk?
- Is the data in the USDA’s PLANTS database considered current, especially for native range? If not, what is the go-to source for plant information in the same context?
- How do multivalent vaccines work? Would it be feasible to make one with mRNA vaccines?
- Is the Earth's orbit level?
- Is nose blindness a matter of the filtering of conscious perception or receptor fatigue?
- Does the Milky Way move in line with the plane of it's spin? Perpendicular? Or does it tumble?
- Can ionising radiation kill you instantly?
- What causes cities to have hard water vs. soft water?
- Is there a reverse to the placebo effect?
| Why is it that when a person gets kidney stones, he/she has a risk of getting stones again? Posted: 28 Feb 2021 08:42 PM PST From what I understand, those who got kidney stones have a high chance of getting it again. Is there a difference in the risk of getting stones before that person got the stone? [link] [comments]  |
| What type of porcelain glaze reduces surface tension? Posted: 28 Feb 2021 09:22 AM PST What type of porcelain reduces surface tension of water? The best surface to mix watercolors is a porcelain glaze. When mixing watercolor, you want a palette surface where the water will spread out and stay where it's wiped from the brush, not bead up. Essentially, if you wipe a wet brush on the mixing surface, the water should streak out as a solid ribbon of water and not bead up and break. When testing porcelain tile at home depot, I found that all of the bath tile caused the water to bead up to some degree. But, when I use a basic dinner plate, the water spreads out evenly without beading. I am wondering why a glazed surface like a dinner plate would work fine, but a bath tile would not? [link] [comments]  |
| Are there any animals that migrate south for the summer and north for the winter? Posted: 28 Feb 2021 08:17 PM PST I mean northern hemisphere animals - do any seek out extremes of temperature like this? [link] [comments]  |
| Does nuclear fusion happen in the corona? Posted: 01 Mar 2021 02:34 AM PST In college I learned that in order for nuclear fusion to start happening you need the energy of your electrons to be high enough to overcome the Coulomb potential, so that they can interact with the nucleus of atoms. The equation (3/2)nkT = e2 /r gives a temperature of ~1010 K, but taking into account quantum tunneling and using the de Broglie wavelength as the radius of the nucleus, you can get a much lower temperature of ~107 K. That's pretty close to the temperatures observed in the corona. Wikipedia even mentions that the corona is 106 K and parts of it can reach even of 107 K, though doesn't have a source attached to it. So does that mean that there are parts of the corona the can fuse hydrogen? I'm assuming the answer is no, and that you need a relatively high pressure as well for fusion to happen, but pressure doesn't seem to appear in the equations. Are the calculations above just approximations to get the order of magnitude for the temperature? [link] [comments]  |
| How long does it take for fossil fuels to regenerate? Posted: 01 Mar 2021 02:52 AM PST |
| Can monoclonal antibodies be used to target T memory cells? Posted: 28 Feb 2021 06:42 PM PST For example to wipe the immune memory of a vaccine/prior infection, or more usefully, to treat an autoimmune disorder like narcolepsy where it appears a long-term immune memory of the surface markers of some of your own cells (i.e. orexin-producing neurones) is created. [link] [comments]  |
| Posted: 01 Mar 2021 01:19 AM PST A metre is defined by the light, so the speed of light has no decimal points. So I was wondering if measurement of time is also define by the light as well. If not, would that not make it inconsistent, therefore cannot definitively measure it? [link] [comments]  |
| I understand that astronauts inside the ISS are free falling. What about the Apollo Astronauts? Posted: 28 Feb 2021 08:26 PM PST And How far do you have to go to have a bigger tug from the sun than the earth? Thanks. [link] [comments]  |
| Why does beverage carbonation create a prickly sensation on the tongue? Posted: 28 Feb 2021 07:23 PM PST |
| How much do different subregions of the brain differ in gene expression? Posted: 28 Feb 2021 07:30 PM PST In the book "What is thought?" by Eric Baum (2004), he predicts that there should be significant differences in gene expression between different regions of the brain, even between small subregions near each other. What have experiments with DNA microarrays (or other technologies) found to answer this question - how similar is gene expression across the brain regions of humans (or other mammals)? [link] [comments]  |
| How do we measure the specific gasses in an enclosed space? Posted: 28 Feb 2021 03:50 PM PST How does NASA measure what percentage of the atmosphere on the ISS is Oxygen, nitrogen, argon, CO2, etc...? I've been searching for a while and I'm unable to find how it's measured. For context, I'm going to be setting up an experiment dealing with how the atmospheric composition of a vacuum-sealed room fluctuates from both the amount of CO2 humans expel and the amount of O2 plants produce depends on how much CO2 is in the air. Thanks in advance for answering my question, and if you need me to clarify at all please let me know. [link] [comments]  |
| When a spacecraft gets a hole in it why does the air get sucked out so fast? Posted: 28 Feb 2021 09:38 PM PST Why does it happen so fast rather than just a slow leak? Can we calculate how fast oxygen gets sucked into a vacuum? Would different gases/elements (other than oxygen) react at different speeds? [link] [comments]  |
| How does radiation affect the nucleus of an atom? Posted: 28 Feb 2021 02:10 PM PST In chemistry/physics, you always hear about radiation exciting electrons to higher energy levels whenever they absorb a photon. How does this work when looking at the protons in the nucleus of an atom? I've never heard about protons absorbing photons, or having discrete energy levels. But because they are a charged particle, surely they are affected by electromagnetic radiation, right? Any insight would be appreciated :) [link] [comments]  |
| Do migraines increase vascular risk? Posted: 28 Feb 2021 05:22 PM PST Do chronic migraines & the regular use of migraine rescue medications (triptans, etc) increase the risk of cerebral vascular disease? [link] [comments]  |
| Posted: 28 Feb 2021 06:12 PM PST Example link: https://www.plants.usda.gov/core/profile?symbol=BAPI3 [link] [comments]  |
| How do multivalent vaccines work? Would it be feasible to make one with mRNA vaccines? Posted: 28 Feb 2021 12:23 PM PST I know that when you get a flu vaccine, it has multiple types of flu. But that's an inactivated virus vaccine, so as far as I know they basically just put multiple types of flu virus in a vial together. Would it be possible to do the same with different spike protein mRNA pieces for multiple different covid variants? [link] [comments]  |
| Posted: 28 Feb 2021 12:35 PM PST By which I mean - 365.25 days ago from this moment, were we in the exact same 'spot' in space as we are now? (With respect to the sun, I mean - pretending that the galaxy isn't also moving, etc etc.) Or does the plane of our revolution 'wobble'? [link] [comments]  |
| Is nose blindness a matter of the filtering of conscious perception or receptor fatigue? Posted: 28 Feb 2021 01:10 PM PST Put simply, if you put a bit of perfume on somebody several hours before they woke, would they notice the scent upon waking or would having been exposed to it for those hours of sleep have desensitized them to it? [link] [comments]  |
| Does the Milky Way move in line with the plane of it's spin? Perpendicular? Or does it tumble? Posted: 28 Feb 2021 02:54 PM PST |
| Can ionising radiation kill you instantly? Posted: 28 Feb 2021 10:00 AM PST Can ionising radiation kill you instantly? What's the example scenario of instant death due to ionising radiation? How high is the radiation dose to die instantly (or in a seconds)? [link] [comments]  |
| What causes cities to have hard water vs. soft water? Posted: 28 Feb 2021 01:23 PM PST Is hard water something that's mainly a result from the actual water source or a result from bad infrastructure by the utility? I understand that a lot of people say the only downside is the taste but I live in a city with very hard water and see it wreaking havoc on my house from the buildup of calcium. I would think its doing similar things to the pipes throughout the city and they would be incentivized to soften the water at the plant. What's the biggest determinant for a city's given water softness? [link] [comments]  |
| Is there a reverse to the placebo effect? Posted: 28 Feb 2021 08:42 AM PST I know about the placebo effect, where an inert substitute can cause some beneficial outcome, and the nocebo effect, where an inert substitute can cause negative side effects, but is there a reverse to the placebo effect? Where an active drug that the person taking it believes is inert ends up being less effective as a result? If this occurs, what is it called? Is it simply a form of nocebo? [link] [comments]  |
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