We’ve now discovered that spending a year in space can change your DNA - What does this change about what we thought we knew about DNA? |
- We’ve now discovered that spending a year in space can change your DNA - What does this change about what we thought we knew about DNA?
- At what point in human evolution did we develop a dominant hand? Is this a trait found in other primates as well?
- If someone is paralyzed from the neck down, how can they still breathe or have a heartbeat?
- What is the hiccup actually doing? Is the function trying to accomplish something, or is it just an alert to drink water? Or is it something entirely different?
- In quantum physics if an particle and an anti-particle pair is created, what does energy of each particle equal to? Is it same for both or is energy of normal particle equal to n and the energy of anti-particle equal to -n?
- We recently discovered 'all galaxies rotate once every billion years'. Is this expected, and if not what are the implications?
- How do we know if a particle is elementary?
- If a plant was unable to build a proton gradient in the chloroplast, I know it wouldn't be able to produce ATP. Would it still be able to produce NADPH?
- Why don't the protons in the nucleus repel each other like positive magnets?
- Since particles increase in mass as they approach c, does that mean that mass is relative? Is mass therefore dependent on your frame of reference?
- If an electron is a "elementary" particle, how can it combine with a proton in electron capture during radioactive decay and turn into something else?
- How fast does electricity travel? If I had an extremely long circuit, and turned it on at one end, how long would it take until the person at the other end would see the current flow?
- Will the universe ever stop expanding?
- Have we ever observed an object (such as an asteroid or comet) from another solar system come into our solar system?
- Does static testing of large rocket motors increase Earth's angular velocity, or affect its rotation in any way?
- Is it possible to change the shape of a subatomic particle?
- Why do dispersion affects differents colours in different ways?
- How can smoking cause cancer years after the smoker has quit?
- What's the difference between laser and light?
| Posted: 14 Mar 2018 09:43 PM PDT |
| Posted: 14 Mar 2018 03:06 PM PDT |
| If someone is paralyzed from the neck down, how can they still breathe or have a heartbeat? Posted: 15 Mar 2018 07:14 AM PDT If the spinal cord is damaged to the point where a person cannot use their arms or legs, why can their heart an lungs still function? Are they connected to the brain in a different way? [link] [comments]  |
| Posted: 14 Mar 2018 07:53 PM PDT |
| Posted: 15 Mar 2018 01:57 AM PDT |
| Posted: 14 Mar 2018 08:48 AM PDT So it seems that there is a direct correlation between angular velocity and size. I assume this is expected, but I can't wrap my head around how this always yields a near billion year rotation. Is this due to 'dark matter' distribution? Or something else? And was this expected of dark matter? [link] [comments]  |
| How do we know if a particle is elementary? Posted: 15 Mar 2018 06:38 AM PDT How are scientists able to determine if a particle cannot be broken down any further? [link] [comments]  |
| Posted: 15 Mar 2018 06:34 AM PDT |
| Why don't the protons in the nucleus repel each other like positive magnets? Posted: 15 Mar 2018 05:40 AM PDT |
| Posted: 15 Mar 2018 05:12 AM PDT I recently started reading A Brief History of Time and the chapter on space and time. It's (somewhat) common knowledge that time is relative - time moves slower for someone in orbit than for someone on the surface of the earth. It's hard for me to articulate exactly, but it seems that mass, energy and velocity are all interlinked because of space-time and e=mc2 - does this mean that the mass of an object is dependent on your frame of reference as well? If a particle is accelerated to a velocity where it's mass is increased tenfold, would the rest of planet earth, from the particle's frame of reference, also be increased tenfold? If this is true, it seems strange that if you pick a specific frame of reference, you can accelerate the entire planet earth to near-c velocities, and also increase it's mass tenfold, without spending much energy at all. [link] [comments]  |
| Posted: 14 Mar 2018 01:09 PM PDT If electrons and quarks are elementary particles, how can they combine to form a different type of quark, e.g. in electron capture of a electron by a proton to form an neutron and an electron neutrino? Is 'elementary' a misnomer as far as irreducibility or unchangeability of so called elementary particles? How does this work in a QFT sense? [link] [comments]  |
| Posted: 15 Mar 2018 07:05 AM PDT |
| Will the universe ever stop expanding? Posted: 14 Mar 2018 09:12 PM PDT I don't mean will it ever be so massive that its own gravity will stop it from growing, but rather will it ever run out of energy to create matter? Is there a finite amount of energy the expansion can create or will the universe continue growing forever (discounting apocalypse theories)? [link] [comments]  |
| Posted: 14 Mar 2018 12:28 PM PDT |
| Posted: 14 Mar 2018 06:22 PM PDT |
| Is it possible to change the shape of a subatomic particle? Posted: 14 Mar 2018 07:38 PM PDT If you put enough of a certain type of force, could you deform an electron from a sphere into, say, a cube? [link] [comments]  |
| Why do dispersion affects differents colours in different ways? Posted: 14 Mar 2018 06:14 PM PDT I'm aware that the speed of light on media (and it's refractive index) depends on wavelength, but I can't find any source on why that happens. Shouldn't change in wavelength be compensated by the frequency changing, in a way to keep the speed of light constant (in a same medium)? [link] [comments]  |
| How can smoking cause cancer years after the smoker has quit? Posted: 14 Mar 2018 03:36 PM PDT I understand the risk of cancer caused by smoking decreases after cessation but never completely, how is this? [link] [comments]  |
| What's the difference between laser and light? Posted: 14 Mar 2018 04:48 PM PDT |
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