- Since batteries are essentially reduction-oxidation reactions, why do most batteries say not to charge them since this is just reversing the reaction? What is preventing you from charging them anyway?
- What would happen if you smoked a cigarette on the ISS?
- If you receive an organ transplant from a child, does the organ continue to grow until the organ would reach the child’s adult age?
- If you were to spectate a person falling into a black hole, what would you see once they’ve passed the event horizon?
- Why do we itch?
- How much of the deadliest toxin known to man, botulinum toxin, is present in Botox and how is it distributed uniformly in Botox in such small quantities?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- How does the number of passengers of a bus/train affect its speed?
- If the neutron cannot be deflected by magnetic fields, how did scientists theorize its existence and how was it discovered?
- Do we all have the same amount of blood?
- How does spicy food works in our mouth?
- When a plant triggers a distress signal, what does it accomplish?
- Is it possible to know a molecule's properties based on nothing but its chemical makeup?
- Why does angular velocity and angular momentum follow the 'right hand rule' for direction?
- Why are there no non-composite images of the Earth?
- Have there been any large scale physics experiments (e.g. LIGO, LHC) that ended up a failure due to an inaccurate predictive model?
- How does helium actually increase the pitch of your voice?
- If the planets (including the sun) orbited around the earth, what differences would it make?
- Why does baryonic matter curve SpaceTime?
- What are spider webs made of? How much can a spider web, and how does it regenerate it?
- Why is Saturn full of Helium 3 but very rare on Earth? And what makes it such a great source of energy?
| Posted: 19 Mar 2019 10:25 PM PDT |
| What would happen if you smoked a cigarette on the ISS? Posted: 19 Mar 2019 10:26 PM PDT I just accidentally watched Event Horizon (1999) instead of the reputable science fiction movie Interstellar (2014) that I meant to. Half of the space crew in this movie are smoking. What would really happen if someone was to smoke a cigarette on the ISS? What if people chain smoked on the ISS as they do in Event Horizon (1999)? Would these chemicals ever dissipate enough to avoid detection? or would they forever be detectable within the air supply and monitoring systems? [link] [comments]  |
| Posted: 19 Mar 2019 09:07 PM PDT |
| Posted: 19 Mar 2019 09:55 PM PDT |
| Posted: 19 Mar 2019 04:48 PM PDT What's happening in our bodies when we get that really deep itch that we can't get? Is it a misfiring nerve? (I'm not asking about the itch you can get rid of by scratching - I mean when you scratch and scratch and there's no relief) [link] [comments]  |
| Posted: 19 Mar 2019 10:37 PM PDT Botulinum toxin has an LD50 of 1.3–2.1 ng/kg. Billionths of a gram are deadly. A fraction of the lethal dose is used in Botox; how can such a small amount of proteins be measured and distributed uniformly? Their exact process is proprietary so i'm not expecting a definitive answer, but I would like to know more about how such a small quantity can be reliably measured and handled, and how much of the potent toxin is likely present in Botox. [link] [comments]  |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 20 Mar 2019 08:13 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments]  |
| How does the number of passengers of a bus/train affect its speed? Posted: 20 Mar 2019 04:21 AM PDT Let's say the maximum speed of a empty bus is 100 km/h. Can it reach this speed when full of people? This sounds like a silly question but I need to know the answer [link] [comments]  |
| Posted: 19 Mar 2019 09:14 PM PDT |
| Do we all have the same amount of blood? Posted: 19 Mar 2019 09:38 PM PDT Do people generally have the same amount of blood, or does it vary from person to person? For example, does a 400 lb man have more bold than a 130 lb man? Can certain people lose more blood than others before passing out? Are there people who can produce new blood faster than others? At what age does our heart/circulatory system stop growing and produces a consistent amount of blood? [link] [comments]  |
| How does spicy food works in our mouth? Posted: 19 Mar 2019 11:02 PM PDT We all have experienced the hotness of chilli peppers and the ramen things. It is really hot and sometimes i realized that when we eat something really spicy, our mouth secrete a lot of saliva. Is it the saliva trying to cool down the temperature inside our mouth??and if that so, that means spicy food really "hot" right? In term of temperature? . Isn't it? [link] [comments]  |
| When a plant triggers a distress signal, what does it accomplish? Posted: 19 Mar 2019 09:24 PM PDT This comes up because I found out that the fresh cut grass smell is a distress signal. [link] [comments]  |
| Is it possible to know a molecule's properties based on nothing but its chemical makeup? Posted: 19 Mar 2019 08:51 PM PDT Can a chemist look at the chemical makeup of a molecule and know, for instance, what state of matter it will be at room temperature, what other elements it will react with, what its half life will be, what color it is, or anything like that? Or does a molecule have to be synthesized to figure that stuff out? [link] [comments]  |
| Why does angular velocity and angular momentum follow the 'right hand rule' for direction? Posted: 19 Mar 2019 08:51 PM PDT I've scoured youtube and did a cursory search here and on EI5 but i can't find a good explanation. Every youtube video i look up just says "yeah use the right hand rule to find direction!" (of L and w) without ever explaining WHY we use it. WHY does the direction of angular momentum, for example of a "spinning ice skater" (classic example) who is spinning clockwise when viewed from above, point DOWN? Nothing is actually going down! (is it?!) I watched one video and some guy said it's just a convention we decided on. But then i watched professor Lewin's demonstrations and it can't just be a convention because the objects actually follow these rules in the real world. Did we just decide to use this convention so it matches observation? Can anyone explain why ang. momentum and ang. velocity vectors have these odd directions? [link] [comments]  |
| Why are there no non-composite images of the Earth? Posted: 19 Mar 2019 07:45 PM PDT My flat earther father would like to know this. Thanks. [link] [comments]  |
| Posted: 19 Mar 2019 07:57 PM PDT A lot of time, development, and money go into devices aimed at bettering our understanding of the universe. I frequently hear of the findings enabled by various particle accelerators or other particle detectors. But has there ever been a large-scale investment made in a system whose very underlying theory proved faulty? I suppose this could apply to space probes and science satellites as well. [link] [comments]  |
| How does helium actually increase the pitch of your voice? Posted: 19 Mar 2019 11:51 AM PDT |
| If the planets (including the sun) orbited around the earth, what differences would it make? Posted: 19 Mar 2019 02:03 PM PDT I remember learning in history that at some point people believed that the planets orbited the earth rather then the sun, later on in my science class we were talking about something similar when I asked my science teacher a question, "What differences would be seen in a hypothetical system where the planets orbited around the earth rather then the sun?" I didn't get an answer. I have had this question bounce around my head for a while now and recently discovered this subreddit. So here I am, doing the thing, in hopes of getting an answer. [link] [comments]  |
| Why does baryonic matter curve SpaceTime? Posted: 19 Mar 2019 12:48 PM PDT Why does common matter/energy curve SpaceTime? I've seen in countless shows the heavy ball in the middle of a rubber sheet. But that doesn't explain why matter and energy actually curve SpaceTime. Can someone explain this in layman's terms? [link] [comments]  |
| What are spider webs made of? How much can a spider web, and how does it regenerate it? Posted: 19 Mar 2019 12:35 PM PDT |
| Posted: 19 Mar 2019 05:30 AM PDT |
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