why does a wick work in burning kerosene, but not methanol? |
- why does a wick work in burning kerosene, but not methanol?
- How do (in theory) Cosmic Super Strings form?
- Why does taking the sum and difference between two numbers and dividing by 2 find the minimum of the two numbers?
- What is the reason behind EMF, and how do resistors work at the electron level?
- What is a mixed state, as opposed to a superposition state and how is it possible to engineer experimentally?
- Is it possible to get a marble into "orbit" around the center of a funnel?
- Why are things not stuck in constant phase changes at their respective melting/freezing/boiling points?
- How did scientists determine the nature of the events of the early universe and the times at which those events occurred?
- How does the polarization and handedness of Circularly polarized light change upon transmission from one medium to another?
- CMB experiences doppler shifting?
- A cancerous tumor can metastasize and spread throughout the body. Does that mean that cancer could be contagious if a cancerous cell were to somehow be transmitted?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- What gives carbon nanotubes their strength?
- Where does the energy to make electrons spin around a nucleus come from? Does it ever run out?
- Do speech impediments affect laughter?
- How is a basic metabolic panel performed in the lab?
- Could a ship float on mercury?
| why does a wick work in burning kerosene, but not methanol? Posted: 14 Jun 2016 09:54 PM PDT |
| How do (in theory) Cosmic Super Strings form? Posted: 15 Jun 2016 05:05 AM PDT |
| Posted: 14 Jun 2016 10:27 PM PDT Kinda stumbled on this and seems ridiculously simple. I know it works but I can't really "understand" it. [link] [comments]  |
| What is the reason behind EMF, and how do resistors work at the electron level? Posted: 15 Jun 2016 02:36 AM PDT Edit: Thanks for the responses everyone! I've learned a lot, it's all very interesting and ties together a lot of things I've learned, as well as filling in the conceptual holes that standard school education doesn't provide. Hello! I'm a second year Electrical Engineering student and just had a few general questions that aren't being covered in class.
Edit: New question,
Cheers! [link] [comments]  |
| Posted: 15 Jun 2016 12:43 AM PDT |
| Is it possible to get a marble into "orbit" around the center of a funnel? Posted: 15 Jun 2016 04:30 AM PDT To clarify: Given a funnel and a marble, is there a way to throw the marble in with such a trajectory that it would effectively travel in an ellipse around the hole in the center? I'm sure it would eventually fall in, but that happens with regular orbits anyway, to my understanding. [link] [comments]  |
| Posted: 14 Jun 2016 04:28 PM PDT Because water freezes and ice melts at 0° C, why does, lets say, an ice cube, kept at that specific temperature, not change to a liquid, then back to a solid, then back to a liquid again? Applicable to everything, water is just a simple example [link] [comments]  |
| Posted: 14 Jun 2016 08:54 PM PDT For example, the planck epoch is cited to have happened at 10-43 s and the quark epoch is cited to have been 1012 K in temperature. How on Earth were we able to discover this information? [link] [comments]  |
| Posted: 14 Jun 2016 07:38 PM PDT I have a pretty good understanding that when polarized light is incident on a surface it will change handedness (Right handed polarization, to left handed polarization for example) and remains will remain circular if it is incident at an angle less than the Brewster angle, otherwise it will retain its handedness but become elliptically polarized. But what happens to the transmitted wave? How does it's handedness change? Can it ever remain circular? What happens at normal incidence? [link] [comments]  |
| CMB experiences doppler shifting? Posted: 14 Jun 2016 06:16 PM PDT In the most recent VSauce video, Michael claims that the cosmic microwave background radiation is doppler shifted by the movement of the earth through space. I've been thinking about that alot, and I can only think that this implies a universal reference frame against which to measure the movement of the earth. (You can keep arguing up sizes- you could center the reference frame on the solar axis, galactic center, local group, and even toward the "great attractor" as mentioned in the video- any argument against one can be applied up the chain invalidating every option besides a truly universal reference frame). While I do believe the CMB is doppler shifted, I cant come up with the justification according to relativity. Bonus question- does the radius of the observable universe travel with the earth through space? (assuming the before mentioned universal reference frame) [link] [comments]  |
| Posted: 14 Jun 2016 05:03 PM PDT |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 15 Jun 2016 08:05 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]  |
| What gives carbon nanotubes their strength? Posted: 14 Jun 2016 09:26 AM PDT I know diamonds are strong because each carbon atom in the giant lattice is bonded covalently to four other carbon atoms, but each atom in CNTs is only bonded to three others. Meanwhile, graphite is not very strong on the macro level because the sheets of carbon atoms can slide over each other, but graphene is strong. Is this related to the strength of carbon nanotubes in that just having three bonds per atom still provides a lot of strength? Also, I'm not familiar with how CNTs bond between themselves, but from a search for an image of a CNT, it seems they are just individual tubes. How are they bonded between each other and why don't they just slip over each other as the sheets of carbon atoms do in graphite, causing the material to not be very strong? I have not been educated/educated myself on this subject so my apologies if my questions seem simple. [link] [comments]  |
| Where does the energy to make electrons spin around a nucleus come from? Does it ever run out? Posted: 14 Jun 2016 04:32 PM PDT |
| Do speech impediments affect laughter? Posted: 14 Jun 2016 03:31 PM PDT Context: I recently learned of Drew Lynch, an America's Got Talent contestant who has a stutter. While watching I noticed he didn't pause or seem to have trouble laughing. If brain or neurological damage prevents fluid speech would it also impede fluid laughter? [link] [comments]  |
| How is a basic metabolic panel performed in the lab? Posted: 14 Jun 2016 04:33 PM PDT |
| Could a ship float on mercury? Posted: 15 Jun 2016 03:32 AM PDT Quick question, if there was an ocean that consisted of liquid mercury (or a mercury based liquid) could a regular ship float on it? For that matter (some compounds of gallium are liquid are room temperature) could a ship float on a sea of gallium? I understand that water has special bonding properties due to it's molecular structure (how it ends up with strong bonds on the surface). I also understand that some heavy objects can float on mercury due to it's high density. Last point, would any form of propeller operate in a mercury or gallium based sea? Thanks for your time [link] [comments]  |
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