Stephen Hawking megathread |
- Stephen Hawking megathread
- What experiments are currently being conducted to discover what dark matter/dark energy is?
- Einstein birthday megathread
- How does gravity effect time?
- Is the water used to cool spent nuclear fuel rods radioactively contaminated? If yes, what is happening with it after it gets exchanged with fresh water?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- Why do sperm cells turn white/clear when they die?
- On this the anniversary of its discovery, why is the axis of Uranus rotation tilted sideways, and have there been any exoplanets discovered with the same feature?
- Do shark teeth contain DNA and could Megalodon DNA be recovered?
- It's Said That Fusion Power is Always 30 Years Away, But How Close Have We Actually Come to Fusion Power, and Have There Been any Recent Advances?
- Would passing the speed of light have an “event” like the sonic boom passing the speed of sound?
- Congratulations, /r/AskScience! You are subreddit of the day!
- How do remote car starters and keyless entry work, in terms of sending their signals?
- Why can't we extinguish the Centralia mine fire in Pennsylvania?
- Are phonons a type of electromagnetic wave?
- Is it possible to create a light emitting zener diode (LEZD)? [Engineering]
- Is it possible to create an LC oscillator circuit that emits gamma waves?
| Posted: 13 Mar 2018 10:03 PM PDT We were sad to learn that noted physicist, cosmologist, and author Stephen Hawking has passed away. In the spirit of AskScience, we will try to answer questions about Stephen Hawking's work and life, so feel free to ask your questions below. Links:
[link] [comments]  |
| What experiments are currently being conducted to discover what dark matter/dark energy is? Posted: 13 Mar 2018 08:38 AM PDT |
| Posted: 13 Mar 2018 10:03 PM PDT Hi everyone! Today is Albert Einstein's birthday and we're here to answer all of your Einstein-related questions. His most famous achievement is arguably the development of the general relativity in 1915. General relativity is an extremely well-tested theory of gravity, with implications for mechanics, astrophyiscs, cosmology, and more. It has been a hot topic lately with the direct detection of gravitational waves. Besides his work in gravity, Einstein was known for a great many other things. In 1921 he received the Nobel Prize in Physics for the discovery of the photoelectric effect. He also worked on thermodynamic/statistical physics (such as Brownian motion and Bose-Einstein statistics), the famous mass-energy equivalence, atomic physics, quantum mechaincs, and more. Feel free to ask all of your Einstein-related questions! [link] [comments]  |
| Posted: 14 Mar 2018 07:11 AM PDT I once heard that if aliens were looking at the Earth due to how gravity bends time they would be seeing the Earth ruled by dinosaurs, is this true? If it is isnt any planet we view possibly at a totally different place in its own history? [link] [comments]  |
| Posted: 13 Mar 2018 10:36 AM PDT I was not able to find any useful resource on this topic, thought someone here could help me :) [link] [comments]  |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 14 Mar 2018 08:07 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer 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]  |
| Why do sperm cells turn white/clear when they die? Posted: 14 Mar 2018 01:54 AM PDT I was looking at my semen under a microscope and for a couple minutes it was really cool watching all the sperm cells move around like black squiggles. It wasn't long after that when they started dying and when they did, they would gradually slow down and also gradually fade from black to either white or transparent (or translucent really not sure). Why did they change/lose color as they died? [link] [comments]  |
| Posted: 13 Mar 2018 07:55 PM PDT |
| Do shark teeth contain DNA and could Megalodon DNA be recovered? Posted: 13 Mar 2018 10:03 PM PDT |
| Posted: 13 Mar 2018 07:23 AM PDT As a followup, what are the biggest hurdles currently in the way of fusion power, and what's being done about them? [link] [comments]  |
| Would passing the speed of light have an “event” like the sonic boom passing the speed of sound? Posted: 13 Mar 2018 05:25 PM PDT |
| Congratulations, /r/AskScience! You are subreddit of the day! Posted: 14 Mar 2018 05:01 AM PDT |
| How do remote car starters and keyless entry work, in terms of sending their signals? Posted: 13 Mar 2018 05:27 PM PDT |
| Why can't we extinguish the Centralia mine fire in Pennsylvania? Posted: 13 Mar 2018 02:29 PM PDT It's been burning for 55 years. It has to be a large contributor to current climate change, or is that not true? [link] [comments]  |
| Are phonons a type of electromagnetic wave? Posted: 13 Mar 2018 09:26 AM PDT My chem prof keeps referring to sound waves/phonons as electromagnetic waves but I always thought they were purely kinetic/due to pressure differential and not electromagnetic. If they are electromagnetic how come they don't travel at the speed of light? If they aren't electromagnetic what are they? [link] [comments]  |
| Is it possible to create a light emitting zener diode (LEZD)? [Engineering] Posted: 13 Mar 2018 08:49 AM PDT If so, would it be able to create visible light and then during an avalanche breakdown emit another non-visible wavelength (or maybe vice versa)? [link] [comments]  |
| Is it possible to create an LC oscillator circuit that emits gamma waves? Posted: 13 Mar 2018 09:21 AM PDT E.g. If a straight wire has am inductance, albeit a low one, and a capacitance, also low, and you cut a current to it very suddenly, wouldn't it form a LC oscillating circuit for a split second, with a frequency near the range of gamma rays? [link] [comments]  |
| You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
No comments:
Post a Comment