In what order were fundamental particles created? |
- In what order were fundamental particles created?
- Does one hemisphere have a more intense summer than the other?
- Would the Earth's gravity be the same if it were a spheroid of uniform density, but same average density, rather than layers of different densities?
- If I had a quarter that was as hot as the surface of the sun in my hand, what would it do to the earth?
- Why is the critical point in temperature/pressure?
- What advancements could quantum computing provide for future videogames?
- How do operating systems tell the CPU to start up/shut down cores?
- Why does the boiling point of water changes with the attitude, but the freezing point always remains 0 °C, no matter the attitude?
- In a Dye Sensitized Solar Cell, why doesn't the redox shuttle "short out" the cell between the anode and the cathode?
- What does the wave component of light mean? I'm having a hard time wrapping my head around this one.
- What makes Swedish iron ore so special?
- Have subatomic particles ever been measured?
- Is there a special Case of all unknowns having the same value?
- Why did most plants end up being hermaphrodites while most animals end up with two distinct sexes?
- Can someone explain Rayleigh scattering leading to the color of the sky?
- What happened to planet X?
- Granite is the most abundant type of rock in the continental crust. Why is it not found on any terrestrial planet(or moon) other than Earth?
- What defines the size (radius) of a star?
- How do they decide which isotope of an element to put in the periodic table?
- Why do we get Vertigo after getting off a boat? What causes Vertigo?
- What is the main bottleneck preventing high resolution (4K, 8K, 16K) monitors from being produced?
- How do babies perceive the world around them?
| In what order were fundamental particles created? Posted: 07 Aug 2016 07:04 PM PDT Does modern science have some grasp of the order in which the first particles formed? If not from the beginning, than at least from the start of the electroweak era? [link] [comments]  |
| Does one hemisphere have a more intense summer than the other? Posted: 07 Aug 2016 07:35 AM PDT Due to the Earths elliptical orbit, one hemisphere will be closer to the Sun during it's summer months, meaning the light intensity from the Sun is greater. However, it also travels faster as Kepler's second law tells us, so it is in this part of the orbit for a shorter time. Do these factors balance out? Or does one hemisphere experience more radiation/m2 /s? [link] [comments]  |
| Posted: 07 Aug 2016 10:10 AM PDT The average density of the Earth is around 5.515 g/cm3. The planet's made up of a crust, a mantle, and a core -- all of which are made with different materials, and have different densities. If the Earth were made of some hypothetical material of the same average density, resistant to the effects of compression and temperature-based deformations associated with it, would the gravity at the surface stay the same? [link] [comments]  |
| Posted: 08 Aug 2016 07:12 AM PDT |
| Why is the critical point in temperature/pressure? Posted: 08 Aug 2016 07:05 AM PDT H2O has it's critical point at 647,3°K and 218 bar What does that mean? [link] [comments]  |
| What advancements could quantum computing provide for future videogames? Posted: 07 Aug 2016 06:50 PM PDT Would CPUs and GPUs be more powerful, resulting in realistic game physics and unlimited AI? What other effects could we potentially see? I'm new to the ideas and potential of quantum computing. [link] [comments]  |
| How do operating systems tell the CPU to start up/shut down cores? Posted: 08 Aug 2016 06:04 AM PDT Hey everyone! At the moment I try to write a program, that emulates a simple CPU (a few registers, a simple instruction set, a bus that makes request to RAM, and a "pipeline" that stores the following lines of RAM whenever an instruction needs to be loaded from there). I split the implementation up into a "CPU" and a "Core" struct because I wanted to reserve myself the possibility to make it use multiple cores later. I had lectures at uni about how simple CPUs and operating systems work, but now that I'm trying to implement those things I notice a lot of things that I didn't truly understand. Among the things I never thought about are:
thanks a lot in advance! [link] [comments]  |
| Posted: 08 Aug 2016 05:50 AM PDT |
| Posted: 07 Aug 2016 06:57 PM PDT |
| What does the wave component of light mean? I'm having a hard time wrapping my head around this one. Posted: 07 Aug 2016 05:32 PM PDT I understand light (electromagnetic radiation) is composed of photons. Photons have a dual nature - they are simultaneously a particle and a wave. I can grasp the particle component. How a photon can interact with matter (electrons), causing electrons to change orbital level, eject other photons, in displays of absorption, reflection, refraction, etc. However, I have a difficult time envisioning the wave modality. I know this corresponds to frequency and energy of the photon, but I don't understand what is actually happening. As an example, let's say the source has a frequency of 1 hertz. One peak and trough of the wave every second. Does this mean that photons (from the light source) are emitted one every second, photon after photon? Does it literally mean the photon is traveling in a oscillating wave motion once per second? Does it mean the photon is vibrating back and forth once per second, and if so, how much distance does it vibrate? Or something much more complicated than I can't simply imagine?... In other words, how is the energy stored in the photon as a wave? I've been trying to find an answer that satiates my curiosity for a day or so now, but all I find is information regarding electromagnetic fields, and maybe it's my lack of understanding in that area that is making this difficult to imagine. Please help. Cheers. [link] [comments]  |
| What makes Swedish iron ore so special? Posted: 07 Aug 2016 07:29 AM PDT In both WWI and WWII, the German factories turning out weapons were heavily dependent upon steel produced from Swedish iron ore. In WWI, the supply of this ore via merchant ships in the Baltic was protected by Germany's High Seas Fleet (which otherwise did not have much of a purpose). In WWII, the supply of Swedish iron ore was so critical to Germany's war effort that it was the primary reason Hitler invaded Norway (nothing can be shipped from Sweden to Germany via the frozen Baltic in the winter, so ore travels overland by rail to the coast of Norway and thence to Germany by ship; hence the need to invade Norway to secure the ore supply year-round) and why he had plans in place to invade Sweden if necessary. What exactly are the chemical properties of Swedish iron ore that made it so desirable for steel production? Why was Germany unable to produce sufficient steel for its war effort using only the iron ores available in the areas of Continental Europe under German control? What was "wrong" chemically with those ores as far as steel production was concerned? I'm not sure this is exactly a "science" question, more about geology/manufacturing processes etc. [link] [comments]  |
| Have subatomic particles ever been measured? Posted: 08 Aug 2016 02:37 AM PDT How do we know that quarks even exist? Have we ever measured them (like how we can detect alpha, beta, gamma particles)? Isn't it more reasonable to assume they do not exist? Further, that a neutron is made of a proton and electron rather than 3 quarks? How could we determine this (such as firing neutrons at a strong magnetic field and seeing if half half split due to difference in electron/proton orientation)? [link] [comments]  |
| Is there a special Case of all unknowns having the same value? Posted: 07 Aug 2016 04:35 PM PDT For example, I have some function A = f(X,Y,Z), and A=X=Y=Z. In other words, the unknowns are interchangeable in this situation. Is there some particular/special way of talking about this? thanks! [link] [comments]  |
| Why did most plants end up being hermaphrodites while most animals end up with two distinct sexes? Posted: 07 Aug 2016 10:35 AM PDT The vast majority of plants have both male and female sexual organs, and when two or more plants fertilise each other, all normally produce seeds or spores. However in most animals the population is divided into males and females, of which only the females bear offspring. [link] [comments]  |
| Can someone explain Rayleigh scattering leading to the color of the sky? Posted: 07 Aug 2016 09:18 PM PDT Looking at the Wikipedia page and Example 11.1 of Griffith's Electrodynamics 3rd Edition, I'm a bit confused about the process. From what I understand, dipole radiation of air molecules has a quartic dependence on frequency. This means that among all wavelengths of visible light hitting the molecules, blue light is re-radiated by them most strongly. This re-radiated light is what we call scattered light and is why the the sky appears blue. One question is why is the sky a darker blue farther away from the sun? Is that because Mie scattering takes over along the sun's line of sight? According to my readings, sunsets are red because the atmosphere is thicker when the sun shines tangent to the Earth's surface, and a thicker atmosphere leads to more scattering. But we established that scattered light makes the sky blue--which is why I'm confused. Is there some "critical mass" of scattering where things can get so scattered that the blue light is very dispersed and the red overpowers it? [link] [comments]  |
| Posted: 07 Aug 2016 09:09 PM PDT All the noise i heard about planet X was just how we found the orbit of it. [link] [comments]  |
| Posted: 07 Aug 2016 05:23 PM PDT |
| What defines the size (radius) of a star? Posted: 07 Aug 2016 08:12 PM PDT |
| How do they decide which isotope of an element to put in the periodic table? Posted: 07 Aug 2016 07:14 PM PDT C12 and C13 are both stable, but C12 gets on the periodic table. Why? [link] [comments]  |
| Why do we get Vertigo after getting off a boat? What causes Vertigo? Posted: 07 Aug 2016 02:33 PM PDT |
| What is the main bottleneck preventing high resolution (4K, 8K, 16K) monitors from being produced? Posted: 07 Aug 2016 01:37 AM PDT Is it cost effectiveness? computing power needed to run that high resolution? risk of damaging a pixel? What is stopping manufacturers from making a 1,920,000 x 1,080,000 screen? [link] [comments]  |
| How do babies perceive the world around them? Posted: 07 Aug 2016 04:15 PM PDT |
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