Do painkillers affect more than just perception of pain? |
- Do painkillers affect more than just perception of pain?
- How was it discovered that metals in space would stick together?
- What part of a peanut's composition induces a reaction in those who have nut allergies, and how can so little of it be deadly in certain cases?
- Is there a super massive black hole at the centre of every Galaxy? If there is does the galaxy form around the black hole or does the black hole form from smaller black holes within the Galaxy merging?
- How does an encryption system share keys with the intended recipient without letting a third party obtain the key as well?
- Why does water expand when it freezes?
- What is the difference between a lunar eclipse and the phases of the Moon?
- Is an acorn considered living?
- If a sphere is rotating, is it moving relative to itself?
- This lightning storm over Reading UK has been going on for about 12 hours now - how is it still going? Shouldn't all the air be de-ionized by now?
- Is there an upper limit on how large a solid object that is one cohesive unit can be?
- Do some people have a chemical need for SSRIs?
- Why are decibels a measure of watts per square meter?
- How are mesa/plateaus etc formed? In particular ones with curved hexagonal columns like Devil's Tower.
- Are people with extra chromosomes denser than the average human?
- Could two waves of light cancel each other out?
- Has science ever thought that neutrinos might be dark matter? They make up 99% of the energy expelled from a nova and can pass through most other matter making them almost undetectable. Sounds like a prime suspect to me.
- Why doesn't N-linked glycosylation occur more commonly with glutamine or arginine amino acid side chains?
- What genetic diseases only affect a small percentage of cells in the body?
- If a pulsar were close enough to observe in the night sky, would we be in danger? [Astronomy]
- What would happen if you made a cube mirrored on the outside?
| Do painkillers affect more than just perception of pain? Posted: 15 Sep 2016 10:42 PM PDT Do painkillers have other effects on the body, other than just blocking the perception of pain? And does blocking pain cause other changes in the nervous system and body? Today at work I experienced a bad headache. For several hours, I felt tired and slow, and unable to think clearly. My mood was terrible. I took paracetamol at midday, and within an hour my headache had lessened, but the thing I noticed most was that I felt alert and refreshed, like I had just woken up. I could think clearly again, and my mood was much better. My understanding of painkillers was that they simply blocked the pain, without really changing anything else. I suppose I am asking: is perception of pain linked to decreased cognition? Or does something else happen that improves cognition while also reducing perception of pain when painkillers are used? [link] [comments]  |
| How was it discovered that metals in space would stick together? Posted: 16 Sep 2016 04:25 AM PDT Did it happen BEFORE we went to space? or was it realized actually IN space? [link] [comments]  |
| Posted: 15 Sep 2016 09:02 PM PDT I just read this article that mentioned a girl who died of acute respiratory failure caused by an allergic reaction because she kissed her boyfriend who ate a peanut butter sandwich several hours earlier. Is it a specific protein in the nuts that cause a reaction or is it multiple things? And what is the mechanism of action that causes severe, deadly reactions in certain cases even though the concentration of the allergen is so low. (Such as in chocolate bars made in the same factory that works with nuts, or someone in the same room eating nuts) [link] [comments]  |
| Posted: 15 Sep 2016 06:39 PM PDT |
| Posted: 15 Sep 2016 08:45 PM PDT I understand that encryption works by providing two parties a key that decodes messages or data they exchange. What I don't understand is how this protects information from a third party that has tapped into one of the parties at the beginning of the communication. For instance, let's say someone has hacked my wifi and watches me log onto Gmail. When I log onto Gmail, don't I get the encryption key at that moment? Wouldn't the third party also have the key and have the ability to read my messages? Can't your ISP do the same? [link] [comments]  |
| Why does water expand when it freezes? Posted: 15 Sep 2016 10:24 PM PDT |
| What is the difference between a lunar eclipse and the phases of the Moon? Posted: 15 Sep 2016 08:36 PM PDT Aren't they both just caused by the Earth's shadow cast upon the Moon? What makes a lunar eclipse a rare and unique phenomenon? [link] [comments]  |
| Is an acorn considered living? Posted: 15 Sep 2016 10:06 PM PDT |
| If a sphere is rotating, is it moving relative to itself? Posted: 15 Sep 2016 04:56 PM PDT I had a debate with a co-worker in which he said that an object can move relative to itself. That an object can be its own frame of reference. We were talking about the Sun as it moves through the galaxy. We of course went through the obligatory acknowledgement that the galaxy itself is moving through the universe and so on. However when I said that even the sun's rotation could only be described as it related to other objects, he disagreed and said that an object could be moving relative to itself. I proposed a thought experiment in which a basketball was the only object in the universe. I said that, in this scenario, you couldn't say that the basketball was rotating relative to itself. You couldn't say that the basketball was rotating at all, because it would have to rotate relative to something else. He disagreed and said that in this scenario the basketball could be said to be rotating because it could rotate relative to itself. So we're not talking about position or velocity here, but simply rotation. Can something be said to be rotating relative to itself? [link] [comments]  |
| Posted: 15 Sep 2016 09:24 PM PDT I love watching storms when they happen, but this one has been going on since just past 5 p.m. this afternoon, and it's now 5 a.m. I've never seen a storm last this long, and when I did a search, other sites seemed to back up the idea that a storm only lasts about 30-60 minutes. I don't think it's a single storm - one moved across almost overhead at about 6pm, but it's otherwise been quite distant until 3 a.m., and just now - I've seen flashes of lightning almost constantly, but a lot of them have been a few miles away with a 10-30 second flash/rumble difference. Even so, I thought that unless the wind was powerful enough to create its own lightning (e.g. with a tornado or hurricane), it took days of muggy/humid weather to build up enough ionized air for a thunderstorm. It has been very muggy in the past week, with record high September temperatures, but surely the air was de-ionized the first time around - how is there still enough energy in the air for so much lightning? [link] [comments]  |
| Is there an upper limit on how large a solid object that is one cohesive unit can be? Posted: 16 Sep 2016 05:08 AM PDT I was reading about the Pillars of Creation earlier, those are gas/dust clouds, but it made me wonder if there was an upper limit for a solid object. By solid I mean one cohesive unit that can transmit a vibration or wave all the way through it in the vacuum of space, though I'm also curious if there is an upper limit on an object where all the molecules are bound together into one cohesive solid unit. Tagged astronomy but I'm not sure if it should be physics or astronomy. [link] [comments]  |
| Do some people have a chemical need for SSRIs? Posted: 15 Sep 2016 01:23 PM PDT Hi Ask Science, I have a of couple questions on the chemical/ biological need for SSRIs. 1) Do some people naturally produce less serotonin in their brains, meaning they have a chemical need for SSRIs to have the same amount of serotonin in their brain as the average person? 2) Does prolonged use of SSRIs change the chemical/ biological make up of the brain? For example, originally person x produces serotonin at a rate of 10, they take SSRIs for 10+ years and their brain gets use to that absorption rate of serotonin, so takes production rate down to 5. Meaning that person x now has a chemical dependency on SSRIs to have an average level of serotonin in their brain. Researching the topic I found an article 'The mechanisms of tolerance in antidepressant action' (2011) - Giovanni A. Fava, which delves into the topic of long term use of SSRIs, concluding 'appraisal and testing of the oppositional model of tolerance may yield important insights as to long-term treatment'. If any of these questions need more clarification please just say. If anyone has any related questions just post them in the comments and we can try and find out the answers! :) [link] [comments]  |
| Why are decibels a measure of watts per square meter? Posted: 15 Sep 2016 09:22 PM PDT Sound waves propagate in three dimensions, so why are decibels measured in watts per square meter rather than per cubic meter? [link] [comments]  |
| Posted: 16 Sep 2016 04:52 AM PDT In particular, Devil's Tower. If this mesa is supposed to have ejected from beneath the surface upwards (or other theories), what gives the hexagonal lattice the warp/curve seen around the base? I've seen some explanations and theories, but am stumped as to why this mesa has such a curvature. Also, what gives a mesa/plateau/butte etc it's flat top? I've seen this type of hexagonal rock formation elsewhere with curves like Devil's Postpile so it's no uncommon, just curious as to it's process. [link] [comments]  |
| Are people with extra chromosomes denser than the average human? Posted: 15 Sep 2016 08:19 PM PDT In a physical sense. Since they have more things inside their cells. [link] [comments]  |
| Could two waves of light cancel each other out? Posted: 15 Sep 2016 10:40 PM PDT Is it possible for two waves of light to cancel each other out if they're equal but 180 degrees out of phase? If this can happen, what happens to the energy from a thermodynamic point of view? What happens to the photons in them from a quantum point of view? [link] [comments]  |
| Posted: 15 Sep 2016 08:04 PM PDT Neutrinos make up 99% of the energy given off in a super nova. Super novas and regular(?) novas make up all matter in the universe. They are super hard to detect but do give off mass and energy. Doesn't that seem like a likely candidate for dark matter? [link] [comments]  |
| Posted: 15 Sep 2016 11:19 PM PDT |
| What genetic diseases only affect a small percentage of cells in the body? Posted: 15 Sep 2016 08:45 PM PDT Hi Reddit, I realize that this may sound like a silly question as all cells in the body contain the same genetic make up. But are there any known diseases that only affect a small percentage of the total cells in the body? I'm only wondering because of potential applications for sparse gene delivery in the context of gene therapy. Thank you. [link] [comments]  |
| If a pulsar were close enough to observe in the night sky, would we be in danger? [Astronomy] Posted: 16 Sep 2016 02:32 AM PDT |
| What would happen if you made a cube mirrored on the outside? Posted: 15 Sep 2016 10:26 PM PDT Say you had a cube that was made of 100% reflective material on the outside. If you were inside this (large enough) how cold/hot would it be? Would it still heat up even if no light passed through it? [link] [comments]  |
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