Is everyone's blood brain barrier equally permeable? |
- Is everyone's blood brain barrier equally permeable?
- Do anti-photons and anti-gluons exist?
- Why are DNA bases and RNA bases so different? How can removing a single hydroxyl group have such a large impact?
- Lasers and white light?
- If you take any colour and made it dark enough, would it eventually just turn black?
- What about different soaps allows them to form stronger/weaker bubbles?
- Why do spinning hub caps appear to spin in the opposite direction?
- Why can't we cut off the cirrhotic part of the liver and have it regenerate that way instead of having people die by keeping it in?
- What is the Banach-Tarski paradox?
- What is the difference between chirality and spin?
- With the Banach-Tarski paradox, isn't right up left the same as just up?
- Are all the space debris are likely to reenter the atmosphere due to orbital decay ?
- Relative to what point is the speed of light the "velocity limit"?
- Why do mutations in BRCA1 and BRCA2 predispose to ovarian and breast cancer only?
- Does light exerts a force?
- Which gases are we using for Joule-Thomson Effect?
- How can H-1 or H-2 go through radioactive decay if they only have 2 neutrons?
- Can we use the speed of light to establish a universal rest frame?
- Does acetic acid expand when frozen?
| Is everyone's blood brain barrier equally permeable? Posted: 09 Mar 2016 11:13 AM PST |
| Do anti-photons and anti-gluons exist? Posted: 09 Mar 2016 12:14 PM PST |
| Posted: 09 Mar 2016 02:10 PM PST Considering the other groups in DNA bases I would expect that the hydroxyl group would be rather insignificant, yet DNA bases exhibit different chemical properties as opposed to RNA bases (ex: they're more stable) So why does removing this one hydroxyl have such a big impact on the molecule as a whole? [link] [comments]  |
| Posted: 10 Mar 2016 03:46 AM PST If you have 3 lasers - red, green and blue - and combine them into a single beam with mirrors, additive colour theory says you should then have a beam of white light. If you then split this with a prism, will you have the full spectrum or will it just be red green and blue? I know I'm probably wrong about the white light beam, but it makes sense in my head! Alas, I don't have the kit to try this myself or I would give it a go... [link] [comments]  |
| If you take any colour and made it dark enough, would it eventually just turn black? Posted: 10 Mar 2016 04:26 AM PST |
| What about different soaps allows them to form stronger/weaker bubbles? Posted: 10 Mar 2016 05:20 AM PST I understand the basic chemistry and physics of bubble formation. The polar/nonpolar ends of the soap molecules form a bilayer with water or gas. The bubble breaks when the top of the bubble layer stretches too thin. My question is, what in the soap itself might affect its cohesive properties? Is there a difference between the actual soap molecules in different dish soaps? Please let me know if you need clarification as to what I am asking. EDIT: To clarify further, I'm asking about the intermolecular properties of different soap types/brands, as opposed to their interaction with other compounds. [link] [comments]  |
| Why do spinning hub caps appear to spin in the opposite direction? Posted: 09 Mar 2016 01:31 PM PST |
| Posted: 09 Mar 2016 10:44 AM PST |
| What is the Banach-Tarski paradox? Posted: 09 Mar 2016 08:14 PM PST Re: https://youtu.be/s86-Z-CbaHA I don't understand the paradox here. Uncountable infinity divided by two equals uncountable infinity, that seems pretty obvious on the face of it. What makes this special? [link] [comments]  |
| What is the difference between chirality and spin? Posted: 09 Mar 2016 08:28 PM PST can a particle be in a superposition of left-hand and right-hand just like they're in a position of up and down? [link] [comments]  |
| With the Banach-Tarski paradox, isn't right up left the same as just up? Posted: 10 Mar 2016 12:05 AM PST In this video around 13:40 https://www.youtube.com/watch?v=s86-Z-CbaHA Vsauce is talking about points on a circle. He puts a dot at right up left and up but shouldn't those be the same position? He says nothing about the distance of each direction and I'm so confused. If the distance is not fixed, then there should be up, up, up, etc forever since up up would be redundant. Just one up could stand for all of them. [link] [comments]  |
| Are all the space debris are likely to reenter the atmosphere due to orbital decay ? Posted: 09 Mar 2016 10:23 PM PST |
| Relative to what point is the speed of light the "velocity limit"? Posted: 10 Mar 2016 01:59 AM PST I have always been told you cannot exceed c. To what"stationary" point is the relative velocity c the maximum? I am not sure I have clarified the question sufficiently so I will explain what I was trying to think about in the first place. Consider launching a ship from earth. If it reaches a speed of c (or as close as we can achieve) away from earth in the direction away from the sun. We then launch another ship parallel to the first but after a quarter of a year (so the earth has completed quarter rotation and now has max relative speed in the opposite direction to the original ship route) is the maximum speed of the ship going to be the same as the first? When it gains max velocity would it keep a constant displacement from the first? Or would we have to say that it needs to "brake" first and then gain positive velocity due to the original negative caused by the earths rotation? If so then where is the zero point of movement as we are moving round the sun, the sun around the galaxy etc. I really do appolagise for the convolution of this question and am very keen to hear your answers! Many thanks to anyone who gives their time to deal with me!!! [link] [comments]  |
| Why do mutations in BRCA1 and BRCA2 predispose to ovarian and breast cancer only? Posted: 09 Mar 2016 11:33 AM PST I cant find any information on this and was wondering why mutations in the BRCA genes are (seemingly) only strongly linked to ovarian and breast cancer, given that these mutations are in a DNA repair pathway. Shouldnt they also be found in other cancers too? [link] [comments]  |
| Posted: 10 Mar 2016 12:12 AM PST We know that any object that has a mass, can exert a force, but does light has a mass and it exerts a force too? [link] [comments]  |
| Which gases are we using for Joule-Thomson Effect? Posted: 09 Mar 2016 12:25 PM PST What are the gases used in Joule-Thomson Effect and why are we using them? What is the difference between the gases we can use and we cannot? [link] [comments]  |
| How can H-1 or H-2 go through radioactive decay if they only have 2 neutrons? Posted: 10 Mar 2016 02:37 AM PST So I get that it's unstable because it has too many neutrons, but this here (Uni material) says the atom has 1 proton and either 1 or 2 neutrons, so how can it remove neutrons and the nucleus rearrange itself to try and find a more stable form (radioactive decay), if it is only comprised of 3 things? [link] [comments]  |
| Can we use the speed of light to establish a universal rest frame? Posted: 09 Mar 2016 05:32 PM PST Since the energy required to accelerate is based on the current velocity could that be used to establish a universal rest frame? My thought process in case I am missing something: I am rotating around the earth, which is orbiting the sun, etc... Since I already have a velocity would it not be easier to accelerate in one direction and harder in another? I understand that assuming the cosmic microwave background is close to this, the earth's velocity is only about 371km/s which is paltry compared to the speed of light but would this be theoretically possible? [link] [comments]  |
| Does acetic acid expand when frozen? Posted: 09 Mar 2016 06:43 PM PST Wikipedia's article on properties of water includes acetic acid in its list of "other substances that expand on freezing", but when I looked at wikipedia's acetic acid page it quotes the density of acetic acid as a liquid is 1.049 g/cm3 and as a solid is 1.266 g/cm3 which suggests it is denser as a solid so must contract. Clarification? [link] [comments]  |
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