Which stimuli reactes the fastest? Visual, auditory or tactile? |
- Which stimuli reactes the fastest? Visual, auditory or tactile?
- Why are there so many fundamental constants in the universe and what fixed their values?
- Why do our arms and fingers in a relaxed state have a bend to them?
- Mathematically, how would I prove that (ab)/(cd) = (a/c)(b/d)?
- Why do bottles have necks?
- If heat kills bacteria, why can't you simply reheat all food, no matter how old?
- Can em/radio waves be received with anything other than metal antennas?
- How long it takes to universe double its size?
- (Economics) How do we accurately measure a standard of living?
- Is the acquisition or loss of a plasmid in a bacterial population considered evolution?
- Is there a mental disorder that causes the delusion of having other mental disorders?
- What does the body do with the materials from phagocytosis?
- Why do we call our moon "Moon" instead of an actual name?
- WHY do we say that, in quantum mechanics, time does not correspond to an observable? We can obviously measure time, so surely there MUST be some time operator that exists.
- If I dug down to the Earth-Moon barycenter undergound and stood in its exact area, would anything interesting occur?
- Why do Humans have armpit-hair?
- Why is absolute zero theoretical?
- Is IBM's Watson considered a Strong or Weak AI, and can we even classify AI with out truly knowing what intelligence is?
- Why do orcas have such large eye spots?
- Does the human body use stored (old) fat or newly digested fat for energy first?
- How do we describe momentum quantitatively?
- How much meaningful data (words) can the average person memorize and be able to perfectly recall at will indefinitely?
| Which stimuli reactes the fastest? Visual, auditory or tactile? Posted: 26 Oct 2015 10:06 PM PDT |
| Why are there so many fundamental constants in the universe and what fixed their values? Posted: 27 Oct 2015 12:30 AM PDT There are so many fundamental constants in the universe - e.g. mass of proton, electron, speed of light etc. What actually fixed their values? E.g. why is the speed of light 299792458m/s and not some other value like 400000m/s? [link] [2 comments]  |
| Why do our arms and fingers in a relaxed state have a bend to them? Posted: 26 Oct 2015 08:59 PM PDT Does having this trait carry an adaptive advantage as opposed to having straight arms and fingers on an evolutionary standpoint? [link] [8 comments]  |
| Mathematically, how would I prove that (ab)/(cd) = (a/c)(b/d)? Posted: 26 Oct 2015 07:20 PM PDT I am sure this is probably trivial, but I am getting stuck on this one. I am a fifth grade teacher, including math, and I like to always know the reason behind things I teach. How would I prove that (ab)/(cd) = (a/c)(b/d) using fundamental properties of arithmetic? Assuming of course c and d aren't zero here. And by "fundamental properties of arithmetic" I mean things like the associative property, commutative property etc. (I am not sure I have my terminology right. I would also appreciate any book recommendations that would help here.) [link] [11 comments]  |
| Posted: 26 Oct 2015 08:05 PM PDT Why have bottles come to the shape that they do? Does the neck serve any purpose other than aesthetics, and what differentiates a "jar" from a "bottle"? [link] [24 comments]  |
| If heat kills bacteria, why can't you simply reheat all food, no matter how old? Posted: 26 Oct 2015 12:20 PM PDT If heat kills bacteria, then why are there so many guidelines for food safety? Couldn't you just reheat any food and kill that bacteria? (obv this might impact taste, but it seems simpler than the complex food safety laws) [link] [35 comments]  |
| Can em/radio waves be received with anything other than metal antennas? Posted: 26 Oct 2015 02:43 PM PDT |
| How long it takes to universe double its size? Posted: 26 Oct 2015 10:16 PM PDT I have done some calculation, but Im not sure if its so simple: Hubble constant: 67.8 km/s/megaparsec (67800 m/s/megaparsec) 1 Megaparsec = 308567757144092000000 km 308567757144092000000 / 67.8 (and converting to years) 14 421 697 482.514454 years (14.4 billion years) Did I missed something? Universe never "doubled" its size, most of space exists now was created during inflation period? [link] [1 comment]  |
| (Economics) How do we accurately measure a standard of living? Posted: 26 Oct 2015 10:35 PM PDT Is there a true method to measuring a certain standard of living? If so, what are some of the independent variables used in measuring it? How is standard of living defined? These questions have left me puzzled and curious. Don't know if i came to the right place. [link] [3 comments]  |
| Is the acquisition or loss of a plasmid in a bacterial population considered evolution? Posted: 26 Oct 2015 10:10 PM PDT Or would it only be considered evolution if there were changes in the chromosomal DNA? [link] [1 comment]  |
| Is there a mental disorder that causes the delusion of having other mental disorders? Posted: 26 Oct 2015 09:53 PM PDT The delusions would be of experiencing symptoms of other disorders. Someone may claim to suffer from schizophrenia, show no symptoms of it, yet claim to experience many or all of the non-observable symptoms. I am not referring to factitious disorders, where the individual is intentionally spreading lies. [link] [2 comments]  |
| What does the body do with the materials from phagocytosis? Posted: 26 Oct 2015 10:59 PM PDT Is all of the digested material shuttled out of the cell or have we evolved ways to utilize things like nucleotides and proteins from foreign bacteria? [link] [1 comment]  |
| Why do we call our moon "Moon" instead of an actual name? Posted: 26 Oct 2015 05:40 PM PDT So as most people (I hope) know, moon is not a proper noun, it refers to a mass that orbits a planet. All of the other planets in our solar systems have moons with specific names, like Europa, Io, etc. However, Earth's is just "moon." Why is this? Why isn't our moon named something? [link] [23 comments]  |
| Posted: 26 Oct 2015 07:45 PM PDT So I missed a lecture a couple weeks ago and am finally catching up with notes on it. On my lecturer's notes it says "time in quantum theory...is used to label the state, and not an observable". But we CAN measure time, so why does it not have an observable? Surely it has one, and we just haven't found it yet? [link] [4 comments]  |
| Posted: 26 Oct 2015 07:01 AM PDT |
| Why do Humans have armpit-hair? Posted: 26 Oct 2015 08:29 PM PDT |
| Why is absolute zero theoretical? Posted: 26 Oct 2015 07:11 PM PDT I am aware that we are unable to reach this temperature but why is it impossible to reach? [link] [2 comments]  |
| Posted: 26 Oct 2015 09:52 PM PDT I am a Freshman Computer Science major and have been struggling to grasp what AI truly is. After learning about Watson and how he/she/it is designed to learn as a human would I figured Watson would be considered a Strong AI. I quickly learned that this is not the case according to some experts and was confused as to why. I figured that after a day of reading both side's arguments I should ask /r/askscience their opinion. [link] [3 comments]  |
| Why do orcas have such large eye spots? Posted: 26 Oct 2015 08:14 PM PDT They're apex predators and have essentially no known predators. Yet eye spots in nature are generally used by PREY to ward off others. For orcas, I bet they're an evolutionary remnant from millions of years ago when there WERE larger predatory species that used to literally prey on orcas. That's a cool thought [link] [3 comments]  |
| Does the human body use stored (old) fat or newly digested fat for energy first? Posted: 26 Oct 2015 04:18 PM PDT |
| How do we describe momentum quantitatively? Posted: 26 Oct 2015 09:23 PM PDT I know P = mv, but how do we explain it quantitatively, (e.g. velocity is a rate with a direction)? I know the closest I can get is P is the integral of F in respect to time. [link] [4 comments]  |
| Posted: 26 Oct 2015 06:18 PM PDT Say I wanted to memorize a random book, or 5 books, or 20 books, but then I wanted to be able to perfectly recall, or orally recite, the information I have memorized at will. Is there an upper bounds to the amount of information the average person can memorize in this manner and keep it all straight within the context of each source? From my own experience with memorizing various long passages of text, I have to periodically "refresh" myself to maintain the integrity of what I have memorized. This is usually accomplished through simple recitation to myself from memory. I am just curious how much I can realistically memorize. [link] [2 comments]  |
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