Have flying insects evolved ways to combat spider webs? |
- Have flying insects evolved ways to combat spider webs?
- If someone lost a limb, does the body naturally adjust how much blood it produces?
- Are Wormholes real?
- How do bees, wasps, and hornets decide what to sting?
- How do we design new surgeries and decide who attempts it first?
- Collision of two Neutron stars. How is it that Gold and Platinum are detected?
- Is there a good reason the grizzly bear didn't spread east to Quebec? Or Siberian tiger west into Europe?
- How is it possible that the planet Mercury gets so cold and so hot on opposite sides? Shouldn't heat conduction make the entire planet roughly the same temperature?
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- Does air temperature have any effect on sun strength?
- Is it possible to have water-fueled cars?
- What is the most abundant element in the world?
- What muscle holds our urine in?
- Why don't plants use ATP from photosynthesis for cellular function?
- Would a bullet fired from a gun really fall at the same rate as one dropped from a the same height?
- Does Vicks / Olbas oil actually help you to breathe better during a cold? Or does it just feel nice for a few seconds?
- Can invertebrates be allergic to certain foods like people/dog/cats can be?
- What actually causes wind?
- How do electrons know when to scatter?
- How do coconut trees produce coconut water?
- How do neutron stars generate a magnetic field?
- Why not use thermoelectric generators (TEG's) on nuclear cooling towers?
| Have flying insects evolved ways to combat spider webs? Posted: 15 Nov 2017 03:09 AM PST I noticed a duel of sorts between a moth and a spider just now where I was certain the moth was doomed as it flew into the section where a spider had firmly set up its web, but as it flapped its wings so quickly it tore apart the web, and even sent the spider fleeing. I don't know if this in itself was an adaption to webs, in fact I'd say from an uneducated standpoint that I doubt it... but it did make wonder if there were other insects which had developed natural tools against spider webs. [link] [comments]  |
| If someone lost a limb, does the body naturally adjust how much blood it produces? Posted: 14 Nov 2017 08:21 PM PST I mean, say someone loses a leg or something. After it's been taken care of does their blood pressure change does the heart have an easier time? [link] [comments]  |
| Posted: 15 Nov 2017 02:43 AM PST I always thought that Wormholes were still limited to science fiction without proof as yet but today I read an article from Cornell University intimating that they exist. https://arxiv.org/abs/1711.04560v1 So which is it? Are they real? [link] [comments]  |
| How do bees, wasps, and hornets decide what to sting? Posted: 15 Nov 2017 04:58 AM PST What's their thought process when it's not completely obvious what exactly disturbed the nest? For example, if:
[link] [comments]  |
| How do we design new surgeries and decide who attempts it first? Posted: 14 Nov 2017 07:32 PM PST |
| Collision of two Neutron stars. How is it that Gold and Platinum are detected? Posted: 15 Nov 2017 03:14 AM PST I read recently here about the collision of two Neutron stars being observed for the first time. They mention that the forging of heavy metals such as Gold and Platinum were detected. What are the signs that indicate the presence of Gold and Platinum? How are they not destroyed in the 'collision'? [link] [comments]  |
| Posted: 14 Nov 2017 09:07 PM PST Both tigers and brown bears cover huge swats of land with very varied climate. Yet they don't (and didn't, according to this) ever cover the continents east to west. It seems to me that the habitat should fit just fine, and the area between as well seems easy enough to cross for these species? Is it because of humans? Competition? [link] [comments]  |
| Posted: 15 Nov 2017 04:57 AM PST |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 15 Nov 2017 07:06 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science 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]  |
| Does air temperature have any effect on sun strength? Posted: 15 Nov 2017 06:04 AM PST I'm aware that the angle of the sun is what matters and that the sun is higher in the sky in the summer, but even a summer evening sun feels so much hotter than a midday winter sun. Is this just perception due to air/body temperature, or is there something about the atmospheric conditions that changes the strength of the sun? [link] [comments]  |
| Is it possible to have water-fueled cars? Posted: 15 Nov 2017 07:43 AM PST Is it possible to have water-fueled cars? I know about hydrogen-fueled cars, but water (H2O)? I'd also like to gain some understanding why, particularly on the molecular level. I assume there are numbers on how much energy is necessary to start the chemical reaction that releases the energy to -- say -- fuel a car. I also assume that the energy needed to start a reaction with H2O is much higher than what is released. Or maybe the energy needed is just so high that the engines would become massively huge. I don't know. Please don't stop at technical terms. I would research anything I don't understand. But please don't exxagerate :) [link] [comments]  |
| What is the most abundant element in the world? Posted: 15 Nov 2017 02:40 AM PST I can find the most common element in the atmosphere and the earth's crust, yet I can't seem to find anything about the world as a whole (including the mantle and so on) as well as the atmosphere. [link] [comments]  |
| What muscle holds our urine in? Posted: 15 Nov 2017 01:15 AM PST |
| Why don't plants use ATP from photosynthesis for cellular function? Posted: 15 Nov 2017 12:03 AM PST It seems like it would be more efficient for the plant to use ATP generated by photosynthesis for cellular function rather than taking the extra step to respire. Does all the ATP from photosynthesis power the Citric Acid Cycle? [link] [comments]  |
| Would a bullet fired from a gun really fall at the same rate as one dropped from a the same height? Posted: 15 Nov 2017 02:32 AM PST There is the common adage that bullets fired from a gun and those that are simply dropped will hit the ground at the same time. Though it makes sense that Earth's gravity would affect objects of similar weight in the same way, couldn't the bullets spin and or speed put it in a sort of short and doomed orbit? Allowing it more air time than the other one that's dropped from the same height? [link] [comments]  |
| Posted: 14 Nov 2017 03:10 PM PST |
| Can invertebrates be allergic to certain foods like people/dog/cats can be? Posted: 15 Nov 2017 03:44 AM PST |
| Posted: 15 Nov 2017 03:28 AM PST |
| How do electrons know when to scatter? Posted: 15 Nov 2017 03:04 AM PST How can electrons tell when to scatter and exchange virtual photons? [link] [comments]  |
| How do coconut trees produce coconut water? Posted: 14 Nov 2017 04:12 PM PST In my limited exposure to fruits I have yet encountered other kind of fruit that has actual free flowing liquid stored inside. I'm curious as to how it is produced. And what is the purpose of keeping liquid inside the fruit. [link] [comments]  |
| How do neutron stars generate a magnetic field? Posted: 14 Nov 2017 05:19 PM PST If they are composed entirely of neutrons, there is no separation of electric charge. If there are no moving electric charges, how are the strong magnetic fields generated? [link] [comments]  |
| Why not use thermoelectric generators (TEG's) on nuclear cooling towers? Posted: 15 Nov 2017 05:42 AM PST A cooling tower is a heat rejection device that rejects waste heat to the atmosphere through the cooling of a water stream to a lower temperature. (Wiki). It seems to me that we are just wasting the heat and the power that could be produced from said heat, could we not just attach the TEG to the outside of the tower with heat sink compound and then on the cool side have a metal heat sink? Would this not both reduce waste and decrease the impact nuclear power generation has on the environment? Technically it should be able to pay for itself wouldn't it? [link] [comments]  |
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