On a biomolecular level, what does it actually mean when someone has a "good" immune system instead of a "bad" one? |
- On a biomolecular level, what does it actually mean when someone has a "good" immune system instead of a "bad" one?
- How can thunderstorms trigger asthma attacks, such as the recent phenomenon in Melbourne, AUS?
- Why don't we use heavier elements to attempt fusion reactions instead of H2/H3 isotopes? Have people tried to use heavier elements before?
- Why wasn't Northeastern Siberia covered by a continental-scale ice sheet during the last glacial period?
- Does a lightning strike create a magnetic field around it for a short amount of time?
- If energy were no object, what are some scaleable ways to pull CO2 out of the air and bind it to some solid?
- Can light reflect light (can photons bounce off of each other)?
- Why is the electric flux through a closed surface zero?
- Would a planet with a sun that was always stationary in the sky be possible?
- Why does a high voltage transformer vibrate?
- How much faster does broadband need to get before offloading some real-time CPU tasks to a powerful cloud computing center becomes efficient? How about GPU tasks?
- how do lakes and landlocked seas get populated with aquatic life?
- "Quantumly entangled particles don't violate special relativity as you can't transmit information." Can someone explain how knowing the spin on an electron a million light years away is not information?
- How is it possible for two bottles in the same place to be 100% water and 100% ice respectively?
- So if you can't take the logarithm of a negative number, then why does e^pi * i equal to -1?
- Has Australia ever been green and lush? When was the last time?
- Do cats see holographic materials the same way humans do?
- If a neutrino has mass, what determines their handedness if we're in the neutrino's reference frame?
- Is it feasible to send nuclear waste into space?
- What is the relationship of COD to VFA and Alkalinity in terms of primary sludge concentrations?
- How widely is true randomness used?
- When an s-orbital electron gets excited to an sp3 hybridised orbital, why does its spin orientation change?
| Posted: 02 Dec 2016 07:23 AM PST Does it mean that your body can detect lower concentration levels of pathogens in the body, in more places, and mount a response faster? Does it mean your body can produce more white blood cells? That your body is more energy efficient in doing so? Causes less severe symptoms in doing so?... [link] [comments]  |
| How can thunderstorms trigger asthma attacks, such as the recent phenomenon in Melbourne, AUS? Posted: 02 Dec 2016 07:15 AM PST In Melbourne, 8 people so far have died from what is being dubbed 'thunderstorm asthma', and a friend of mine had a severe attack, despite having never displayed any symptoms previously. I'm wondering what the actual mechanism is that causes a weather storm to trigger violent asthma attacks? [link] [comments]  |
| Posted: 02 Dec 2016 07:51 AM PST |
| Posted: 02 Dec 2016 06:22 PM PST North America was certainly covered, as was northern Europe. Why was Siberia not the same? [link] [comments]  |
| Does a lightning strike create a magnetic field around it for a short amount of time? Posted: 02 Dec 2016 11:04 AM PST Just an interesting thing that popped in my head today, who better to ask than this sub! [link] [comments]  |
| Posted: 02 Dec 2016 11:31 AM PST Many people are approaching the carbon sequestration problem as something that has to be low-energy. I suspect we will enter an era where the CO2 will have to be extracted from the air regardless of the energy costs. In essence, terraforming. So let's suppose we had a nuclear power plant with its energy output devoted entirely to removing CO2 from the air and then chemically binding it with calcium or some other element to permanently bind the carbon in a solid form. Ideally the solid would have commercial value. Or perhaps it could just be dumped in blocks to the bottom of the sea. What are some ways that carbon could be bound up with, say, 500 megawatts of power? [link] [comments]  |
| Can light reflect light (can photons bounce off of each other)? Posted: 02 Dec 2016 03:03 PM PST Can photos collide with other photons, and if so, what happens? Will they merge, or will one or both be reflected in some direction? [link] [comments]  |
| Why is the electric flux through a closed surface zero? Posted: 02 Dec 2016 09:32 PM PST This makes sense to me if the field lines were constant over the entire object, but we know that the field strength drops as 1/r2 (at least for a point charge) . I'm aware of Gauss's law and how it would be easy to say "No charge enclosed, no flux." However, I'm lost intuitionally. For example, let's say I have a point charge directly outside of a cube and for simplicity, I'll only consider field lines who are perpendicular to two surfaces of the cube. Electric field lines would first pierce the entry wall of the cube at a distance we'll call R1. Then, after some distance, say R2, the field lines pierce the exit wall and continues on. Since the net flux is the difference of the flux over these surfaces, and the field strength is stronger at R1 than it is at R2, how can the net flux be zero? Or do I have this wrong? [link] [comments]  |
| Would a planet with a sun that was always stationary in the sky be possible? Posted: 02 Dec 2016 10:46 AM PST I had a dream a few nights ago about a planet where the sun didn't move across the sky as time went by. When I woke up, I did a few sketches to try and work out if it was possible and I ended up figuring out that if a planet completed a 360 turn, exactly as it reached the start point of a circular orbit (i.e 1 year), that at a given point on that planet, the sun would appear at the same point in the sky, no matter the hour, day or month. Could this be at all accurate? Also, if yes, I realise that most planets orbits are elliptical, would the same situation, of a point on the planet's surface, constantly facing the sun at the same angle, be possible? Thanks for taking the time to read this badly worded post, I appreciate any responses! [link] [comments]  |
| Why does a high voltage transformer vibrate? Posted: 02 Dec 2016 08:53 PM PST Is it the electrons cumulative movement or is there something else going on? [link] [comments]  |
| Posted: 02 Dec 2016 07:41 PM PST So as most everyone in technology forecasting had predicted it seems that we are now well into a technological era in which internet connections are fast enough (and supporting hardware cheap enough) to allow for widespread, efficient usage of cloud storage services. Even the slowest of our connected devices are quick enough to make offloading some of the burden of storing ever increasingly large files to dedicated systems where the only concern is maximizing storage, allowing our devices to focus on being ever better at their designed purpose - free of some of the storage burden. The logical next step would be utilizing the network to again trade bandwidth for performance by offloading processing tasks. But how fast will our networks have to be to do this? And how long will it take us? How much bandwidth would be needed in order for "cloud CPU cores" to become a reality, offering on demand performance multiplications over the internet? What about for 'cloud GPU' tasks whereby game rendering could be largely delegated to a cloud data center? Resubmitted, I forgot to flair last time! [link] [comments]  |
| how do lakes and landlocked seas get populated with aquatic life? Posted: 02 Dec 2016 10:49 AM PST |
| Posted: 02 Dec 2016 10:41 AM PST |
| How is it possible for two bottles in the same place to be 100% water and 100% ice respectively? Posted: 02 Dec 2016 11:33 AM PST Last night I opened up my fridge and noticed something odd on the top shelf. I had two unopened bottles of water there, and they had been there for several months while I was out of the country. One of those bottles was filled with 100% liquid water, the other 100% solid ice. http://i.imgur.com/lKgrHRBh.jpg I speculated that perhaps this was due to their location in the fridge--IE the frozen bottle was slightly cooler--so I switched their positions. Today (14 hours later) the same bottle is frozen as it was last night with no sign of thawing. Both bottles are approximately the same size and should contain approximately the same contents. Any ideas? [link] [comments]  |
| So if you can't take the logarithm of a negative number, then why does e^pi * i equal to -1? Posted: 02 Dec 2016 05:13 PM PST Was messing around on my calculator today and found that epi*i = -1. So that means that the natural log of -1 is ~3.14i. I thought that the logarithm of a negative number is undefined, so how does this work? [link] [comments]  |
| Has Australia ever been green and lush? When was the last time? Posted: 02 Dec 2016 04:30 AM PST I read about "Green Sahara" and the last time there was no big desert in Africa and the middle east (during the neolithic subpluvial), and that got me thinking, has Australia ever been green and lush? If so, when was the last time? [link] [comments]  |
| Do cats see holographic materials the same way humans do? Posted: 02 Dec 2016 08:04 AM PST For example, would they be able to see any difference in iridescent/holographic paper compared to plain paper? [link] [comments]  |
| If a neutrino has mass, what determines their handedness if we're in the neutrino's reference frame? Posted: 02 Dec 2016 11:58 AM PST Since they're Majorana particles their spin only determines if we have a neutrino or anti-neutrino. The super position of chiral states can be manipulated depending on the helicity of the neutrino. If we're in the neutrino's reference frame is the handedness just a superposition of chiral states with equal contributions?i.e. 50% change it is right-handed, 50% chance it is left-handed [link] [comments]  |
| Is it feasible to send nuclear waste into space? Posted: 02 Dec 2016 12:21 PM PST One of the biggest problems with nuclear power is the the radioactive waste it produces. Instead of sealing it away underground and waiting for it to decay, is it possible to instead use rockets to send it away from earth and out into the solar system? [link] [comments]  |
| What is the relationship of COD to VFA and Alkalinity in terms of primary sludge concentrations? Posted: 02 Dec 2016 06:16 AM PST Hi, I did a three-point titration on a centrifuged sample of primary sludge as part of a weekly data collection system and I usually only calculate VFA and alkalinity in Excel, but my supervisor recently asked me to start recording the COD of the sludge as well. I was just wanting to ask what the relationship of this is to the other, and how does this impact VFA/Alk? Thank you! [link] [comments]  |
| How widely is true randomness used? Posted: 02 Dec 2016 11:43 AM PST I read somewhere that most random numbers are generated with a formula or a "seed." Is it possible to obtain true randomness? And if so, how proliferated is it? [link] [comments]  |
| Posted: 02 Dec 2016 05:21 AM PST During orbital hybridisation, when the electrons from the 2s2 orbital get excited to the higher energy orbital sp3 why does one of the electron's spin orientation change? Does an electron's spin always change when it moves to a higher energy state? If so, why didn't the other electron in the 2s2 orbital change? [link] [comments]  |
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