What is the white stuff inside pimples? What it's made out of, why we have it, and why does it exit in this way? |
- What is the white stuff inside pimples? What it's made out of, why we have it, and why does it exit in this way?
- What is the significance of eigenvalues in physics?
- Does fire have a ‘standard’ temperature? If not, what materials or substances have give the highest and lowest temperatures?
- Do animal mothers show signs of depression if they lose offspring?
- Does anything eat thermophiles?
- If black holes slowly lose mass from Hawking radiation, why don't they become neutron stars?
- Is there a concise way of describing the degree to which a material can be "packed down?"
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- What's the purpose of a neodymium magnet in a water filter?
- Is there more salt in the rain in Florida than rain in say Idaho?
- Has the amount of people diagnosed with cancer increased since 60s or 70s?
- Why is Neptunium not as useful as Uranium/Plutonium in reactors/weaponry?
- How do they test walls and stuff for asbestos?
- Sorry for the dumb question! How does feeling a breeze when moving not violate Special Relativity?
- Does distance from the center of a galaxy affect the average make up of stars?
- Don't excited electrons give off the same wavelength they absorbed earlier, effectively cancelling out the effect on colour?
- If between the earth and sun it's a vacuum then why does the change in distance of the earth from the sun result in a change in temperature?
- I read that part of the reason Australia has red, oxidized soil is that it was relatively unaffected by the last ice age. Why?
| Posted: 27 Jun 2018 05:30 AM PDT |
| What is the significance of eigenvalues in physics? Posted: 26 Jun 2018 09:38 AM PDT |
| Posted: 27 Jun 2018 03:54 AM PDT |
| Do animal mothers show signs of depression if they lose offspring? Posted: 27 Jun 2018 03:51 AM PDT |
| Does anything eat thermophiles? Posted: 26 Jun 2018 04:49 PM PDT I am curious if thermophiles are eaten by anything or give off a waste that is eaten. [link] [comments]  |
| If black holes slowly lose mass from Hawking radiation, why don't they become neutron stars? Posted: 26 Jun 2018 04:59 PM PDT If my understanding is right, you could take mass out of a neutron star until its gravity can no longer overcome the strong nuclear force at which point it would go back to being a white dwarf. But when black holes lose mass they just become smaller black holes. [link] [comments]  |
| Is there a concise way of describing the degree to which a material can be "packed down?" Posted: 26 Jun 2018 05:36 PM PDT This question came into my head while making a cup of coffee (or 5) this morning. I am used to measuring out whole bean coffee but only had ground available, and wasn't sure how to convert. The obvious non-answer is "it depends on how well the ground coffee is packed," which got me to thinking "why does it seem to not also depend on how well the whole bean coffee is packed?" Now I find myself wondering if this property has been well studied (it seems like it must be, I'm sure it comes up in things like civil engineering) and if there is a neat way to describe it. It seems like there is a geometric question about the shape of the "particles" for wont of a better word, but maybe also a physical one regarding the size and malleability of the particles. For example it seems at a cursory glance like fine particles may be easier to pack down than coarse ones. If anyone has come across this idea or has some insight into what properties of a material would affect it, I'd be grateful to hear! [link] [comments]  |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 27 Jun 2018 08:12 AM PDT 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]  |
| What's the purpose of a neodymium magnet in a water filter? Posted: 27 Jun 2018 04:00 AM PDT Some days ago, I found this video https://youtu.be/r1GzOadFYpg where a Japanese guy apparently found a way to create a knife out of a combination of ice and polyester. Before freezing the water, he puts it through a water filter and adds a neodymium magnet. Does this magnet have any real purpose? If so, what does the magnet change? [link] [comments]  |
| Is there more salt in the rain in Florida than rain in say Idaho? Posted: 26 Jun 2018 04:47 PM PDT |
| Has the amount of people diagnosed with cancer increased since 60s or 70s? Posted: 27 Jun 2018 04:45 AM PDT It feels like a lot of people are being diagnosed with cancer, has it always been so? [link] [comments]  |
| Why is Neptunium not as useful as Uranium/Plutonium in reactors/weaponry? Posted: 26 Jun 2018 04:05 PM PDT |
| How do they test walls and stuff for asbestos? Posted: 26 Jun 2018 05:05 PM PDT Do they dissolve it in an acid or use some sort of machine to tell you? And if the machine how does the machine work? [link] [comments]  |
| Sorry for the dumb question! How does feeling a breeze when moving not violate Special Relativity? Posted: 26 Jun 2018 07:31 PM PDT Sorry if the question seems dumb, but I was doing some reading on Special Relativity and the Principle of Relativity and it got me thinking: If I were moving at a constant speed in a car, for example, and I stuck my hand out the window, I would feel a breeze. The fact that I feel a breeze tells me I'm moving. Doesn't this violate the Principle of Relativity and how a reference frame at rest should be no different from a frame at constant motion? If I was at rest in the car, I wouldn't feel a breeze but if I'm moving, I would. Obviously, there's a flaw in my logic but I can't figure out where. Thanks for the help! [link] [comments]  |
| Does distance from the center of a galaxy affect the average make up of stars? Posted: 26 Jun 2018 02:07 PM PDT For example, do larger stars tend to occur closer to the center and smaller stars further out? I guess a related question would pertain to the average distribution of mass. If there is a correlation between distance from the center and average star make-up, could/do we use this information in our search for possibly habitable planets? [link] [comments]  |
| Posted: 26 Jun 2018 01:50 PM PDT When white light is shined on a pigment, some electron gets excited on a higher energy level with a certain fixed energy difference which corresponds to a colour. White light minus the absorbed colour is the complementary colour. But when the electron falls back to the lower level if gives off a photon of the same wavelength it absorbed before, so overall the light is white. What am I missing? [link] [comments]  |
| Posted: 26 Jun 2018 06:00 PM PDT |
| Posted: 26 Jun 2018 02:00 PM PDT |
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