Is it possible to determine the location at which a photo was taken based on the moon's position in the sky? |
- Is it possible to determine the location at which a photo was taken based on the moon's position in the sky?
- If I wanted to refrigerate 1 litre of water to 5 degrees celsius, would it be faster to place 500ml into 2 bottles (in the same fridge) as opposed to 1 litre in 1 bottle?
- A particle of light is called a photon. What's a particle of radio called?
- Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
- How should I calculate who did "better" on a test?
- Is radiation given out from everyday objects harmful towards us?
- Will melted bismuth stick to glass?
- What is the amount of usable energy in Nuclear Fission?
- Can a black hole have lumpy mass distribution?
- Why do certain mental illnesses or physical conditions cause us to experience clear sensory hallucinations (people's faces, voices speaking in sentences, etc.) rather than just sensory garbage?
- When, for example, the Big Bang is described as having occurred 13.7 billion years ago, how is this quantifiable?
- On a Rubik's cube, can any sequence of moves, if repeated enough times, eventually return the cube to its initial state, such as starting and ending solved?
- How can a small child learn 3 or more languages at once when learning to speak?
- Would a sudden loss in cabin pressure on an airline flight result in all of the soda cans onboard exploding?
- When I consciously blur my vision, what is actually happening in my eyes?
- How can an acid corrode through other materials?
| Posted: 09 Dec 2015 01:46 AM PST If I went outside on a cloudless night or day and took a photo in which the moon was visible, would be possible to determine where this photo was taken? Or does the moon's location in the sky not provide enough information to be able to conclude that? What other data could be plugged into the equation so as to allow us to come to such a conclusion? Would the time of day and year help? [link] [107 comments]  |
| Posted: 09 Dec 2015 01:15 AM PST |
| A particle of light is called a photon. What's a particle of radio called? Posted: 09 Dec 2015 01:10 AM PST |
| Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 09 Dec 2015 07:02 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology 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] [1 comment]  |
| How should I calculate who did "better" on a test? Posted: 09 Dec 2015 08:57 AM PST My friend and I race on math tests to see who can finish first. He usually beats me by a few minutes but I usually get a higher grade. Is there an optimal way to determine who did "better" in terms of both time and grade, other than the obvious (grade/time)? [link] [6 comments]  |
| Is radiation given out from everyday objects harmful towards us? Posted: 09 Dec 2015 01:40 AM PST I'm aware technology gives out radiation as I've been told by people that if you sit too close to a television, you get radiation. However, the reason why I am asking this question is because of a video I just watched and it slightly bugged me and made me paranoid. Should we be concerned on the radiation given from our technology? Is this guy in that video overly paranoid for nothing? [link] [13 comments]  |
| Will melted bismuth stick to glass? Posted: 09 Dec 2015 06:23 AM PST I have an art project I have been considering, and I know that bismuth has a much lower melting point than glass. I should specify; I keep any and all jars I get from food-pickles, marinara sauce, etc, because I really hate to throw away perfectly good glass, and we don't have glass recycling around here. I was thinking, since I live in an apartment (no access to a shop for other melting other metals), that a low melting metal like bismuth could be cool to dip the jars in to create vases and such. Secondly, I suppose I'll ask- if it will stick, would it b safe to create drinking glasses from these, or purely ornamental? Would they last in the dishwasher, do you think, or does bismuth "tarnish" or..rust? I'm sorry if I sound very ignorant. Thanks for taking the time to read! [link] [2 comments]  |
| What is the amount of usable energy in Nuclear Fission? Posted: 09 Dec 2015 05:25 AM PST By this I mean: What is the percentage of the total energy output that we can effectively use to heat water in the reactors? I believe I have read somewhere that the 11% of beta decays is not promptly usable for this but I am afraid I don't fully understand the matter. [link] [1 comment]  |
| Can a black hole have lumpy mass distribution? Posted: 08 Dec 2015 12:57 PM PST Is it possible for a black hole to have non-uniform mass distribution, and thus, have a gravitational field that also isn't uniform? To pin down some hypothetical parameters, lets assume we start with a very large black hole, that has neutral charge, and is not rotating - as much of a vanilla black hole as possible. However, the black hole is massive - perhaps the event horizon is a full light-year in diameter. We then aim a lump of mass directly at the center of the black hole, so as to not induce any rotation. Every reference I can find online invokes the 'no-hair' theorem and thus states that the gravitational field would be uniform; however, as I understand, the no-hair theorem is a statement about the long term evolution of a black hole, and would be to disregard short term dynamics. If a black hole is a full light-year in diameter, then I would naively believe the in-falling matter could not reach the singularity in an instant. Is there a flaw in that reasoning? Does this not provide a mechanism to learn about the internal structure of a black hole? If we had devices that could measure the gravitational field of a black hole with enough sensitivity, could we not learn about its internal structure, theoretically? [link] [3 comments]  |
| Posted: 08 Dec 2015 12:11 PM PST Let me try to explain that question better because I couldn't condense it very well into a concise title. Certain illnesses (schizophrenia, bipolar disorder, delusional disorder, etc.) or physical conditions (brain damage, brain tumors, etc.) can cause hallucinations such as seeing people who aren't there, hearing voices speaking in complete sentences, things that are very clear, very normal. But as far as I understand, these are caused by the brain receiving sensory input that isn't from an outside source - it's essentially seeing a signal where there's only noise. So why doesn't it seem like noise? Why see clear images or hear clear voices rather than just jumbled crap (seeing colors or splotches, hearing cutting in and out or sounding garbled, etc.)? [link] [16 comments]  |
| Posted: 08 Dec 2015 10:46 PM PST There are a few issues that I do not understand here. I can see that such a figure is easily comprehensible and relevant, but:
[link] [3 comments]  |
| Posted: 09 Dec 2015 02:19 AM PST Also, are there any sequences of moves that need to be repeated hundreds, thousands, even millions of times in order to resolve the cube when starting it solved? [link] [10 comments]  |
| How can a small child learn 3 or more languages at once when learning to speak? Posted: 08 Dec 2015 12:45 PM PST My nephew is growing up learning Dutch, Croatian and English. The father is Dutch, the mother is Croatian and they both speak English to each other. How can a kid's brain make sense of this and categorize everything in the correct language? And why do these kids not mix different languages in 1 sentence? [link] [4 comments]  |
| Posted: 08 Dec 2015 08:50 AM PST |
| When I consciously blur my vision, what is actually happening in my eyes? Posted: 08 Dec 2015 10:53 AM PST |
| How can an acid corrode through other materials? Posted: 08 Dec 2015 12:56 PM PST Is it because the lone ion hydrogen is reacting with other materials or something else? Plus the grammar on the question above might not be correct so ask if there is any confusion ;) [link] [3 comments]  |
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