What makes permanent and non-permanent markers different on a chemical level? |
- What makes permanent and non-permanent markers different on a chemical level?
- Can a moon have a moon? What limits the "levels" of satellite that can exist in a stable solar system?
- Are the nearby airplanes cleared of the sky when launching Falcon Heavy? I was checking Flightradar24 when launch occurred and didn't see any difference. Also, 3 boosters landed back successfully. I assume the sky has to be clear of airplanes to avoid any potential collision?
- Why are some roads made from concrete/cement rather than asphalt? What determines whether it should be one or the other? Why do a lot of the cement roads have grooves in them?
- What is the significance of the third law of thermodynamics?
- Do ants have sleep/wake cycles?
- How fast do materials cool off in space? What's the most significant process that cools them?
- Why are focal seizures more likely to start in the temporal lobe than in other lobes?
- How CRT TV controls the beams so quickly back in the old days?
- Is it possible to simultaneously get an extra chromosome from one parent and miss out on that chromosome from the other? If so, would the resulting child have any defects?
- Are facial expressions genetic or are they “learned” by social cues?
- When I delete a gigabyte of music from my phone, what happens to that information?
- If hot air rises, why are high mountains so cold?
- Why is M-Theory incompatible with the E-8 lattice?
- How can we take pictures of the sun?
- What do the words "measurment" or "observation" mean in the context of quantum physics?
- How far back in time could you go before natural wonders such as Uluru or the Grand Canyon are unrecognizable? Are there any examples of natural features which have developed over the span of human history?
- What exactly are the cores In processors and how are they made?
- Are some languages more difficult for people with dyslexia?
- What happens to the blood vessels going to the hand if you lose the hand?
- Why did we have to send a probe to Pluto to get a photo of it?
| What makes permanent and non-permanent markers different on a chemical level? Posted: 11 Apr 2019 03:24 PM PDT |
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| What is the significance of the third law of thermodynamics? Posted: 12 Apr 2019 04:45 AM PDT I found on the internet that the third law is defined as: "The entropy of a perfect crystal is zero when the temperature of the crystal is equal to absolute zero". I know very little about physics, so if somebody could explain, in layman terms, what this means and why it is significant that would be great. [link] [comments]  |
| Do ants have sleep/wake cycles? Posted: 12 Apr 2019 12:17 AM PDT Do ants have sleep/wake cycles? If so, how do they compare to human sleep cycles? Do they have various stages like we do? [link] [comments]  |
| How fast do materials cool off in space? What's the most significant process that cools them? Posted: 12 Apr 2019 01:04 AM PDT I know the answer is "it depends", but I'm still curious about specific examples like what drives water to cool and how fast does it happen? Or, what causes living things to cool in space in space and how fast does that happen? Im sure you get the gist. [link] [comments]  |
| Why are focal seizures more likely to start in the temporal lobe than in other lobes? Posted: 12 Apr 2019 07:06 AM PDT |
| How CRT TV controls the beams so quickly back in the old days? Posted: 12 Apr 2019 03:02 AM PDT Unlike LED where each pixel has a light source, a CRT relies on just 1 set of cathode ray tube (for color tvs that has 3 color beams). I understand the control of the beam directions done by a set of magnetic coils, however even for very old B&W TV's, it would still require not just precision but super human speed to point the light at the correct spots. To do so with a modern circuit would be easy, but how did they achieve such speed & accuracy back then when even electronic calculators did not exist? also any reason no manufacturer tried to use more sets of cathode ray for higher resolution and faster refresh rate? [link] [comments]  |
| Posted: 11 Apr 2019 01:49 PM PDT To clarify, the end result would be both chromosomes coming from the same parent. [link] [comments]  |
| Are facial expressions genetic or are they “learned” by social cues? Posted: 11 Apr 2019 07:52 PM PDT For example, do humans instinctively know how to facially express disgust at birth/without external influences or do they learn the expression by watching others? [link] [comments]  |
| When I delete a gigabyte of music from my phone, what happens to that information? Posted: 11 Apr 2019 08:52 PM PDT |
| If hot air rises, why are high mountains so cold? Posted: 11 Apr 2019 04:32 PM PDT I just have been wondering, if warm air rises, why are mountains cold? Shouldn't all the warm air be up there? Yet, some mountains have snow at the tops, even in summer. Can anyone explain this to me? [link] [comments]  |
| Why is M-Theory incompatible with the E-8 lattice? Posted: 12 Apr 2019 01:09 AM PDT As far as I understand M-Theory, it's the best existing extrapolation of String Theory, bringing together all other exclusive string theories. I recently heard about the E-8 lattice and find it to be an elegant solution to the question of everything, but it surprises me that it's considered completely incomparable with string theory. Is it just the maths, or is there something more fundamentally incompatible between the two theories of everything? edit: sp [link] [comments]  |
| How can we take pictures of the sun? Posted: 11 Apr 2019 02:18 PM PDT Looking at the sun causes retina damage, and you can start a fire with a magnifying glass. How can we use lenses that focus light to take a picture onto film without it burning the film or damaging the camera? [link] [comments]  |
| What do the words "measurment" or "observation" mean in the context of quantum physics? Posted: 11 Apr 2019 09:23 AM PDT More specifically, what do they mean in the context of the uncertainty principle, double slit experiment, or entangled particles? [link] [comments]  |
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| What exactly are the cores In processors and how are they made? Posted: 11 Apr 2019 06:14 PM PDT I'm a computer geek but have never really seen anything about computer cores besides what they do and etc. I'm really curious as to what the really are and how they are made. Also if you would kindly why can't the process of making them get any smaller such as 7nm etc. [link] [comments]  |
| Are some languages more difficult for people with dyslexia? Posted: 11 Apr 2019 11:51 PM PDT I don't have dyslexia. But I know it is something like seeing letters not as we see them, or at least mixing them up. Now I was wondering if it's more difficult in other writings, for example Asian languages or Arabic? Because for me those characters seem more complex than our alphabet. For example, is Chinese as a native language also more difficult for Chinese speaking people with dyslexia? [link] [comments]  |
| What happens to the blood vessels going to the hand if you lose the hand? Posted: 11 Apr 2019 01:08 PM PDT If your hand is removed, there should still be blood vessels in the wrist that used to go into the hand. Do they stay there and you just have dead ends to your blood vessels after your stump heals, does your body "shut down" those vessels, do they get redirected, or am I completely off base? [link] [comments]  |
| Why did we have to send a probe to Pluto to get a photo of it? Posted: 11 Apr 2019 04:09 PM PDT So this week scientists released a photo of a black hole in a whole other galaxy. What I want to know is why do we have all these fancy telescopes that can photograph objects in galaxies so far away yet if we want to get a photo of a planet in our own solar system we have to send a satellite/probe to do it? [link] [comments]  |
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