[Physics] Why do charges flow from positive to negative? |
- [Physics] Why do charges flow from positive to negative?
- Why do some insects have hemoglobin while others have hemocyanin?
- How do scientists determine the age of cave paintings?
- Is it possible using software to determine the hardware circuits of a computer system?
- Why are there long strips of land along the eastern coast of the US? What formed them?
- Why don't incandescent light bulbs need any cooling, but LED lamps require it?
- What happens if someone seals a completely empty box in space and brings it to earth?
- Do organisms with shorter lifespans evolve faster?
- What gets split with a signal splitter?
- How did computers evolve to have no moving parts?
- How does electricity "know" the path of least resistance?
- Why do people occasionally wake up aroused?
- Why do ultracold 87 Rb atoms behave as bosons?
- How do photons accelerate to c?
- What is TV static and how does it come to be?
- Can spectral flux density be negative?
- How do muscles grow in the average healthy adult male?
- How big is our 'North Star" compared to these objects in this video?
- Do larger birds grow larger feathers?
- If bosons are force carriers, which force does the Higgs carry?
- Does parental blood type influence miscarriage or development?
- Do viral infections reduce an organisms lifespan?
| [Physics] Why do charges flow from positive to negative? Posted: 23 Jan 2017 05:26 AM PST |
| Why do some insects have hemoglobin while others have hemocyanin? Posted: 22 Jan 2017 05:34 AM PST |
| How do scientists determine the age of cave paintings? Posted: 22 Jan 2017 08:02 PM PST |
| Is it possible using software to determine the hardware circuits of a computer system? Posted: 22 Jan 2017 01:32 PM PST You can obviously find out a few basic things about hardware you're running with software programs; the amount of RAM channels, control operations on the microprocessor, etc, but how much further could you theoretically go in determining exactly the structure/nature of the circuits on which the software is running? [link] [comments]  |
| Why are there long strips of land along the eastern coast of the US? What formed them? Posted: 22 Jan 2017 03:45 PM PST All along the eastern coast of the US, there's these oddly thin protrusions of land: http://imgur.com/a/2peSE What caused these? Are there coasts with similar attributes? [link] [comments]  |
| Why don't incandescent light bulbs need any cooling, but LED lamps require it? Posted: 22 Jan 2017 01:25 PM PST Old bulbs didn't require any cooling even in the 100-200W range. But LEDs need passive cooling after few W and active cooling over ~20 W. Why is that? [link] [comments]  |
| What happens if someone seals a completely empty box in space and brings it to earth? Posted: 22 Jan 2017 07:23 PM PST My thermos has a vacuum, but my coffee still gets cold. If I bring home a vacuum from space, what will happen? Will I be able to use it to keep my coffee hot forever? Will the box close in on itself? Thanks in advance for all the answers! [link] [comments]  |
| Do organisms with shorter lifespans evolve faster? Posted: 22 Jan 2017 12:23 PM PST |
| What gets split with a signal splitter? Posted: 22 Jan 2017 05:00 PM PST I have an attic installed antenna. I took a basic EE course back in college, but the details for antennas have been lost to the cobwebs of my mind. As the Radio-Frequency wave impacts the metal of an antenna, the electrons move in concert with the wave. That movement is sent transferred to a coaxial cable to a junction box, where I split it to the TVs I desire to decode the signal. I have a 1-3 splitter that is labeled -3.5db, -7db, and -7db. My question is: what exactly is taking a 3.5 or 7db loss? The induced current (I could see that based on Kirchoff's current laws)? the signal to noise ratio? The induced voltage traveling down the wire? All of the above and more? Something else? I'm very curious what property is actually taking a loss. I remember hearing at one point there was no point in amplifying after a split, because you can't drag more signal up out of the noise, is that true? Thanks! [link] [comments]  |
| How did computers evolve to have no moving parts? Posted: 22 Jan 2017 05:57 PM PST I've read that the earliest computers had to be physically rewired in order to write a new program to the computer. How is it that now we can just write new programs without having to physically alter the wiring inside a computer? What is it about the actual computer code that allows it to be so flexible and do so many different things without having to physically manipulate the computer parts? [link] [comments]  |
| How does electricity "know" the path of least resistance? Posted: 22 Jan 2017 11:22 PM PST In a parallel circuit, current splits at a node and will tend to flow towards a branch with a lower resistance value. How is this possible? I assume this has to do with the quantum mechanical aspect of matter? Bonus questions : in what conditions can a gas become a conductor? Do they offer advantages over conductors such as copper? [link] [comments]  |
| Why do people occasionally wake up aroused? Posted: 22 Jan 2017 08:14 AM PST It's a common phenomenon across seemingly all ages and genders. What causes it? Is it something to do with erotic (but unremembered) dreams? Incidental stimulation of the genitals during sleep? Something else? I'm not referring to erections, here, but rather arousal in general, and am interested in this phenomenon in all genders, not just men. [link] [comments]  |
| Why do ultracold 87 Rb atoms behave as bosons? Posted: 22 Jan 2017 03:55 PM PST I was reading one of my textbooks on Evaporative cooling and came across a list of Bose-Einstein condensates . I was suprised to see 87 Rb. Why does evaporatively cooled 87 Rb behave as a boson? [link] [comments]  |
| How do photons accelerate to c? Posted: 22 Jan 2017 09:31 PM PST If I turn on an LED, out comes the photons - what causes them to accelerate to c? Seems like a little 9V battery would have quite enough... Oomph. [link] [comments]  |
| What is TV static and how does it come to be? Posted: 22 Jan 2017 09:06 PM PST |
| Can spectral flux density be negative? Posted: 22 Jan 2017 05:08 PM PST I was reading through a paper and on Figure 1B the spectral flux density is shown, where the axes themselves are on linear scales. The blue curve on this plot in particular corresponds to the Stokes V parameter (i.e. circular polarization), yet appears like it goes slightly negative in this case. I was simply wondering how that could be as I thought this was related to intensity and was always positive. [link] [comments]  |
| How do muscles grow in the average healthy adult male? Posted: 22 Jan 2017 08:44 PM PST Besides other factors (diet, genetics, testosterone and steroid use), how do muscles grow through exercise only? [link] [comments]  |
| How big is our 'North Star" compared to these objects in this video? Posted: 22 Jan 2017 02:32 PM PST |
| Do larger birds grow larger feathers? Posted: 22 Jan 2017 09:45 AM PST |
| If bosons are force carriers, which force does the Higgs carry? Posted: 22 Jan 2017 07:52 PM PST What makes the Higgs different? I always see it as not in the same category as the other bosons, which account for Electromagnetism, Strong interaction, and Weak interaction. I understand that there's a Higgs field, but I've never heard of a higgs 'force'. [link] [comments]  |
| Does parental blood type influence miscarriage or development? Posted: 22 Jan 2017 03:23 PM PST I've read about different/rare blood types such as A2, etc. Knowing that a fetus gets their type from mother and father, and might not be the same blood type as mom, how does that impact fetal development and mom's health? [link] [comments]  |
| Do viral infections reduce an organisms lifespan? Posted: 22 Jan 2017 04:17 PM PST As per the Hayflick Limit, most vertebrate cells can only divide between 50 and 70 times. However, when viral infections occur, many cells undergo viral lysis, and are destroyed - I presume that after the infection is defeated, nearby cells have to divide in order to repopulate the damaged tissue. As such, do those divisions count towards the Hayflick Limit? Would having had a large number of viral infections (all of which are survived) decrease an organisms lifespan by causing tissues to end up undergoing premature senescence? Or, do infections and the immune response trigger the production of telomerase? [link] [comments]  |
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