Assuming ducks can't count, can they keep track of all their ducklings being present? If so, how? |
- Assuming ducks can't count, can they keep track of all their ducklings being present? If so, how?
- How is blood tested for dopamine, serotonin, and/or norepinephrine? How are 'levels' determined; e.g. what is the actual mechanism of the test?
- What is the difference between a real and virtual particle, and why does that difference matter?
- What would happen a very massive asteroid hit the sun?
- Do stars exist that only emit infrared light?
- Fires burn at different temperatures, what's the 'coolest' fire that we know of? How is it made?
- Are there rogue stars in the Universe, similar to how there are rogue planets?
- Might be a stupid question, but why can't animals of different species mate? What's stopping us from having a dogcat?
- Which insect bite itches the longest?
- How would you safely demolish a skyscraper in a dense skyline?
- How can Aleph Null be the smallest infinite?
- Can we utilize gamma radiation and other types of deadly radiation for energy?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- If electrons repel each other due to their negative charge, how do any bonds form to make molecules?
- Is the contact potential (Vo) for a p-n junction of a particular material a constant value?
- When you swim, what is the relation between weight, force and amount of displaced water?
- Does self-harm (cutting etc.) differ amongst ethnicities / races?
- Does the Expanding Universe Affect the Radio Signals We Send Off into Space?
- Why does a gaseous system change to maintain the equilibrium constant when there is a pressure change?
- Is it possible to drain lava from volcanoes that is predicted to erupt soon and then cooling the magma elsewhere to harvest the minerals?
- Is it possible to make bubbles a different shape, like make a bubble cube?
- BRCA1 and BRCA2 gene deficiencies, why do these result in cancer of breasts or ovaries and not other types of tissue?
- Would a speaker work inside of a vacuum?
| Assuming ducks can't count, can they keep track of all their ducklings being present? If so, how? Posted: 03 Aug 2016 02:21 AM PDT Prompted by a video of a mama duck waiting patiently while people rescued her ducklings from a storm drain. Does mama duck have an awareness of "4 are present, 2 more in storm drain"? What about a cat or bear that wanders off to hunt and comes back to -1 kitten/cub - would they know and go searching for it? How do they identify that a kitten/cub is missing? Edit: Thank you everyone for all the helpful answers so far. I should clarify that I'm talking about multiple broods, say of 5+ where it's less obvious from a cursory glance when a duckling/cub is missing (which can work for, say, 2-4). For those of you just entering the thread now, there are some very good scientific answers, but also a lot of really funny and touching anecdotes, so enjoy. [link] [comments]  |
| Posted: 02 Aug 2016 08:38 AM PDT I've been learning about different theories of human emotion and many of them focus on the three molecules listed in my title question. This lead me to wonder how these molecules are tested for. Since biology is one of my weaker areas of knowledge, I tried looking around on the web for how these substances are extracted and/or tested for; however, I found little information. Most of what I found focused on lay peoples' personal medical experiences–off topic for me. And, since I don't know what these tests are called in their professional context, I can't get my search on. What I'm curious about is how, in general, these substances are detected in the blood and how, from a technical perspective, the concentrations are determined. I was hoping that a basic description would lead me to a basic understanding the correct terminology so that I could study further on my own. Thanks. edit: Everyone, thanks for so many responses. It will take me a while to read through all of them but you all have given me a great start to my journey. Cheers! [link] [comments]  |
| What is the difference between a real and virtual particle, and why does that difference matter? Posted: 02 Aug 2016 08:35 AM PDT |
| What would happen a very massive asteroid hit the sun? Posted: 02 Aug 2016 07:24 AM PDT A asteroid the size that it can easily do a massive amount of damage to earth. [link] [comments]  |
| Do stars exist that only emit infrared light? Posted: 03 Aug 2016 12:44 AM PDT |
| Fires burn at different temperatures, what's the 'coolest' fire that we know of? How is it made? Posted: 03 Aug 2016 05:33 AM PDT |
| Are there rogue stars in the Universe, similar to how there are rogue planets? Posted: 02 Aug 2016 06:27 AM PDT I've heard of rogue planets that have been flung out of their star system, and I was wondering if there were perhaps rogue stars that have been flung out of their galaxy and roam empty space. Is that even possible? [link] [comments]  |
| Posted: 03 Aug 2016 07:26 AM PDT |
| Which insect bite itches the longest? Posted: 03 Aug 2016 05:50 AM PDT Was devoured by chiggers after a 2 hour trek in the woods. In the realm of the insect world (would have put quotation marks around 'insect world' but figured that might be the wrong use of such)...which insect bite/s take the longest to heal/quit itching? [link] [comments]  |
| How would you safely demolish a skyscraper in a dense skyline? Posted: 02 Aug 2016 06:09 PM PDT Whenever I see pictures of places with lots of closely packed skyscrapers I can't help but wonder how would you safely demolish one of them without damaging anything around it? You obviously can't just knock it down if there's no space around it, so how would it be done? [link] [comments]  |
| How can Aleph Null be the smallest infinite? Posted: 03 Aug 2016 05:18 AM PDT How can Aleph Null be the smallest infinite? Don't for example the infinite numbers between "1" and "2", make a smaller infinite than all the number contained in Aleph Null? [link] [comments]  |
| Can we utilize gamma radiation and other types of deadly radiation for energy? Posted: 03 Aug 2016 12:39 AM PDT As far as I know, radiation is a kind of energy (and vice-versa) that is very deadly to everything. But if atomic energy is available, then why can't we use radiation for power? [link] [comments]  |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 03 Aug 2016 08:05 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]  |
| If electrons repel each other due to their negative charge, how do any bonds form to make molecules? Posted: 03 Aug 2016 03:56 AM PDT I thought I understood this but I hit me recently. How does anything exist? Electrons are negative so they should repel each other, yet it is somehow a lower energy state to share electrons and become one molecule. I probably don't understand it all or have all the information. Does it have something to do with quantum mechanics? [link] [comments]  |
| Is the contact potential (Vo) for a p-n junction of a particular material a constant value? Posted: 03 Aug 2016 07:01 AM PDT I'm learning about p-n junctions in my electronic course and I was taught that when a p-n junction is formed a potential barrier (Vo) is formed. I was taught that for Silicon the value is 0.6V and for Ge its around 0.2 V. I'm unable to get a grip around how there could possibly be a constant value for this potential. Wouldn't it depend on several other factors of the p-n junction? [link] [comments]  |
| When you swim, what is the relation between weight, force and amount of displaced water? Posted: 03 Aug 2016 06:32 AM PDT I want to know if the weight I'm lifting to train my biceps and triceps is ok, or if I should eventually add more. I want to be strong enough so my muscles can handle swimming faster and more time. [link] [comments]  |
| Does self-harm (cutting etc.) differ amongst ethnicities / races? Posted: 03 Aug 2016 06:26 AM PDT I know that self-harm such as cutting differs greatly between genders, does it differ between ethnicities or races? Or is it mostly a white people / white young women phenomenon? Do chinese or black teenagers cut themselves at the same rates as white teenagers do, ceteris paribus? [link] [comments]  |
| Does the Expanding Universe Affect the Radio Signals We Send Off into Space? Posted: 03 Aug 2016 05:45 AM PDT I was watching an episode of PBS Spacetime on the Youtubes, and they were explaining how the expanding universe "stretches" the wavelengths of photons emitted by stars making them experience Red-Shift. My question is, does this phenomenon only affect photon wavelengths or does it affect radio waves as well, and if so, would aliens be able to decode the radio waves we send out due to this effect? [link] [comments]  |
| Posted: 02 Aug 2016 11:57 PM PDT If a system is at equilibrium, that is there is the same amount of forward reaction as there is back reaction. Why does the (relative) concentration of gas change when a pressure change is imposed? Le Chatelier's Principle states it will "oppose the change" but why would it do so? The gas particles are still in the same ratio relative to each other (albeit higher concentrations - at t=0 after decreased volume) and they all have the same energy as before. They collide more frequently (if volume decreased - therefore pressure increased) but that would mean the rate of forward and back reaction would be faster but no net change in the amounts of each gas at equilibrium compared to the equilibrium before the pressure change was imposed? [link] [comments]  |
| Posted: 02 Aug 2016 02:33 PM PDT What if we drilled a hole near an active volcano deep into it's magma chamber, drain out some magma so we prevent it from exploding, is that possible? [link] [comments]  |
| Is it possible to make bubbles a different shape, like make a bubble cube? Posted: 03 Aug 2016 05:53 AM PDT |
| Posted: 02 Aug 2016 06:17 PM PDT I know that these genes are involved in double-stranded DNA break repair, which is a big problem for a cell, so it seems that BRCA deficiency should leave other tissue types vulnerable to cell mutation and cancer. If we don't really know, that's a good answer too. [link] [comments]  |
| Would a speaker work inside of a vacuum? Posted: 02 Aug 2016 07:35 PM PDT |
| 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 Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
