Sensei

I think so. After ionization thunderbolts/electric discharges are going more easily path that has been ionized. It's used in various electronic devices used to detect ionizing radiation. Ionization is creating photons in visible spectrum and UV range, ionization of metals produce x-rays (when highly accelerated electrons from electron gun are hitting piece of metal placed in vacuum tube). Ionization of element with Z protons/atomic number can produce photons with energy <= ~ 13.6*Z^2, so for Hydrogen <=13.6 eV per photon max, for Helium <= 54.4 eV, and so on. But photons are more typically emitted by any hot body. Their energy correspond to temperature of body (blackbody radiation). For low temperatures they are in microwaves and infrared range. For high temperatures, f.e. millions of degrees, they will be ionization radiation.

It's iron tube, and through that tube there is blasted pure Oxygen from container.

It's called shock wave https://en.wikipedia.org/wiki/Shock_wave It's unlikely that exactly shock wave in air from exploding grenade will kill you. Rather fragments. "Fragmentation grenades are common in armies. They are weapons that are designed to disperse lethal fragments on detonation. " https://en.wikipedia.org/wiki/Grenade Underwater reverse. "The Mk 40 kills or otherwise incapacitates the target by creating a lethal shockwave underwater" f.e. H2O, CO2 and typically other oxides of exploding material, or not fully burned intermediate compounds.

Mobile phones use cell phone towers as primary method for precise localization.. If you enable localization via GPS satellite, in my smartphone, precision is poor. After enabling localization via cell tower, precision is much greater. It tells me in which room in apartment I am in. GPS chip by itself does not send any data to government. Cell tower can do it, when phone is communicating with it. Couple such towers, with different delays from the same device, plus triangulation, gives precise location of device. Conclusion, government does not need atomic clocks and GPS for tracking individual people.

I'm sorry, I can't quite follow yet, M=Mass? Do you mean 1 kg of air is moving, per second? CoM is shortcut from Center of Mass https://en.wikipedia.org/wiki/Center_of_mass But where are equations leading to this value, to follow by people step by step.. ? Helicopter is moving air from the above of rotor to below. Do you have electric drone? Run it and you should feel stream of air below it.

Chimp giving instruction how to open door to human: Chimp playing pacman And obviously famous Chimp beating Human in remembering numbers in the right sequence:

In this context, w is shortcut from "work" rather than "watt". Work is energy with Joules as unit. Watt = Joules / second. https://en.wikipedia.org/wiki/Work_(physics) There is very similar equation in Wikipedia article [latex] w = \int_0^t p(t) dt [/latex] https://en.wikipedia.org/wiki/Power_(physics) in "Peak power and duty cycle" section. It could be used to calculate energy of AC pulses.

You started from reading about, hard to grasp for layman, twin's aging thought experiment, and immediately you were put off. You should start from much easier to grasp decay of unstable particles, where are used Special Relativity equations to predict something which you can actually see on your own eyes in particle detector (which you can build literally today for couple dozen usd).. I wrote example equations here: http://www.scienceforums.net/topic/104711-we-are-in-the-outflow-of-a-universal-black-hole/page-2#entry982413 Using them you can predict decay energy, velocity, kinetic energy, momentum of newly created particles. Then compare with what you have in particle detector. In quote it was "quantum mechanics", not "quantum physics". Special relativity is widely used in particle detectors like CERN/LHC, in computer software, to recreate impact of particles with other particles, and production of mesons, baryons, and leptons 2nd and 3rd generation, high energy gammas, etc. etc

Nobody needs GIF here. It's science forum. Scientists want to see calculations and equations which can be tested against experimental data..

In my reply, I was not judging actions of politicians of these countries, but presenting raw facts. Their actions and reactions were quite predictable. One offensive action was replied by another country predictable in advance reply. Tense between countries were arising to the level war was inevitable. May I reply with questions: Did US declare war with Germany after conquering France.. ? Attacking England? Attacking and occupation of eastern countries in '39 ? Did US freeze German's assets after conquering France.. ? etc. etc. like above.. Freezing German's assets happened in June'41, 2 years after the first attack (without including overtaking of Austria and occupation of Czech..) What is so special in taking little Vietnam by Japan, from taking entire Europe by Germany, so freezing assets happened exactly just because of this action.. ?

Obviously not "fault of US". But you are missing bigger picture. You have to remember that France didn't exist at that time. Half was taken by Nazi, and half was under political control by Nazi. France surrendered 25 June 1940. Japan invaded Indochina in September 1940. France was occupying these territories, didn't own them. For people living there it was replacement of one occupant by another occupant. The First Indochina War began just a bit later, to liberate from French occupation: https://en.wikipedia.org/wiki/First_Indochina_War Some call "killing other country leader" as "aggressive diplomatic"..

Andromeda (together with its satellite galaxies) https://en.wikipedia.org/wiki/Andromeda_Galaxy "The Andromeda Galaxy is approaching the Milky Way at about 110 kilometres per second (68 mi/s)." (lucky for us, not really fast though) "This makes the Andromeda Galaxy one of about 100 observable blueshifted galaxies."

In other thread, I showed where energy equations are used to calculate something useful, and measurable by devices, in alpha decay of unstable isotope: http://www.scienceforums.net/topic/104711-we-are-in-the-outflow-of-a-universal-black-hole/page-2#entry982413 When you use v=0, in equation E=mc^2/sqrt(1-v^2/c^2), you are getting E=mc^2 exactly.. Because when v=0, gamma is 1. It's PE=m*g*h You forgot to multiply by m. There was experiment, in which bullets were fired from gun, at water target. Scientists measured temperature of water prior experiment, fired bullets, dozen/hundreds of them. They decelerated after impact, and transferred their kinetic energy to water. Then water was mixed to have uniform temperature distribution. Temperature of water was measured again after experiment From definition of calorie https://en.wikipedia.org/wiki/Calorie we know that 4.1855 Joules of energy is needed to increase temperature of 1 gram of water by 1 degree. The same experiment can be repeated with object released and hitting water due to gravitation from some well known height. PE=mass of object [kg] * g * height Divide by ( 4.1855 J/g*K * mass of water [grams] ) And you will receive relative increase of temperature of water dT. Even if you wouldn't know equation for PE, you would get it straight away from above experiment, repeated for couple test masses of objects, and couple test heights.

US did everything to Japan have to start war.. f.e. freezing (so basically stealing) Japanese assets and embargo. http://www.history.com/this-day-in-history/united-states-freezes-japanese-assets "Jul 26. On this day in 1941, President Franklin Roosevelt seizes all Japanese assets in the United States in retaliation for the Japanese occupation of French Indo-China." From the above link: "Japans oil reserves were only sufficient to last three years, and only half that time if it went to war and consumed fuel at a more frenzied pace."

"wave nature" of electrons is exhibited in electron diffraction experiment. https://en.wikipedia.org/wiki/Electron_diffraction Electrons with different kinetic energy, generate different looking pattern. I think you should start from buying young's double slit setup (cost here ~$10), diffraction grating setups (various gap sizes), and three lasers red, green, blue. To really see how it looks in the reality.

Are you familiar with photoelectric effect? https://en.wikipedia.org/wiki/Photoelectric_effect One, single photon, with enough or higher energy (given by equation E=h*f) is hitting at target is ejecting one single electron, from now on called photoelectron. Its kinetic energy corresponds to energy of incoming photon minus energy needed to liberate it. K.E.=1/2*me*v^2 = h*f - W To check what energy has photon (in visible spectrum) there are used effects like diffraction, interference, prism. Photons with different energies/frequencies/wavelengths are reacting slightly differently, different pattern is generated. In electron diffraction, it's kinetic energy of single electron, which changes diffraction pattern https://en.wikipedia.org/wiki/Electron_diffraction

Radiation is exactly emission of particles. Typically in random direction. So sending enough of them, they follow inverse-square law. You need to have something to radiate away. And that "thing" is energy. Particles prior emitting photons have higher energy state, than after emitting them.

In infinitly long, random, not repeatable, sequence of digits, sooner or later you will find the all possible combinations of digits. 1.67*10^-27 kg is mass of proton only in kg as unit. In electron volts, it's 938.272 MeV/c^2 So the same with the all other physical constants. They can be converted to completely different units.

So each component range is 0...+infinity, right? If vector component, in f.e. 2D is x,y, can be in range 0...+infinity Then dot product will be (+infinity) *(+infinity) + (+infinity)*(+infinity) + .... (repeat as many as dimensions) I made such little C++ code: #include <stdio.h> #include <stdlib.h> #include <time.h> int main( int argc, int *argv[] ) { srand( clock() ); float max_value = 1000000; int max_i = 1000000; for( int i = 0; i < max_i; i++ ) { float xx = (float) rand() * max_value / RAND_MAX; float xy = (float) rand() * max_value / RAND_MAX; float yx = (float) rand() * max_value / RAND_MAX; float yy = (float) rand() * max_value / RAND_MAX; float dot = xx * yx + xy * yy; printf( "%f\n", dot ); } return( 0 ); } After using it from command-line, It generated series of rows (,exe >data,csv), that can be loaded from OpenOffice, and sorted, and show graph (max_value=1000): 3-dimensions version: #include <stdio.h> #include <stdlib.h> #include <time.h> int main( int argc, int *argv[] ) { srand( clock() ); float max_value = 1000000; int max_i = 1000000; for( int i = 0; i < max_i; i++ ) { float xx = (float) rand() * max_value / RAND_MAX; float xy = (float) rand() * max_value / RAND_MAX; float yx = (float) rand() * max_value / RAND_MAX; float yy = (float) rand() * max_value / RAND_MAX; #if 1 float zx = (float) rand() * max_value / RAND_MAX; float zy = (float) rand() * max_value / RAND_MAX; #endif float dot = xx * yx + xy * yy; #if 1 dot += zx * zy; #endif printf( "%f\n", dot ); } return( 0 ); } Graph from 3D version (max_value =1,000,000)

Googling for "amd phenom ii x4 955 processor silent cooler" Obviously reveals water (or other liquid) coolers, which are pretty silent, but are expensive. f.e. http://www.tomshardware.co.uk/forum/278731-29-best-silent-cooler-phenom-black-125w The first mentioned " Antec Kuhler H620 Liquid Cooling" used one costs $50 https://www.amazon.com/Antec-Kuhler-H2O-620-Liquid/dp/B004LWYE4Q new one, newer version $70 http://store.antec.com/cpu-liquid-cooling/kuhler-h2o-650.html Kuhler H2O 620 Overview Installation procedure You would have to talk to who actually use water/liquid cpu cooler. My the main computer use air, and it's pretty quiet, at the moment. It's possible to sleep, with it running, in the same room.

Googling for "amd phenom ii x4 cpu temperature": http://www.tomshardware.co.uk/forum/274612-28-what-safe-core-temperature-phenom-processor-fami " what is a safe core temperature for AMD Phenom II X4 955 Processor [x86 Family 16 Model 4 Stepping 2] ??" " No higher than 62 C. " Some said it's even on manufacturer website.

In how many dimensions? So, if they're 3D, Xx,Xy,Xz and Yx, Yy, Yz, you know from the start that: sqrt(Xx^2+Xy^2+Xz^2)=sqrt(Yx^2+Yy^2+Yz^2) sqrt(Xx^2+Xy^2+Xz^2)=n sqrt(Yx^2+Yy^2+Yz^2)=n therefor Xx^2+Xy^2+Xz^2=Yx^2+Yy^2+Yz^2 In 2D: sqrt(Xx^2+Xy^2)=sqrt(Yx^2+Yy^2) sqrt(Xx^2+Xy^2)=n sqrt(Yx^2+Yy^2)=n Xx^2+Xy^2=Yx^2+Yy^2 so once we randomize the first Xx: Xx = sqrt(Yx^2+Yz^2-Xy^2) // Xx = rand(); then we cannot randomize Xy, because it has to have length equal n Xx = (float) rand() / MAX_INT; sqrt(Xx^2+Xy^2)=n Xx^2+Xy^2=n^2 Xy^2=n^2-Xx^2 Xy=sqrt(n^2-Xx^2) // either n and Xx are known already.. then how can we randomize Xy.. ? Normalization of vector is division each component by it's length Xx / n = Xx' Xy / n = Xy' Yx / n = Yx' Yy / n = Yy' Length will be 1. Why going n to infinity, if they will be just vector in 2D in range 0.0...1.0 per component, multiplied by n.. ? I would start from writing small C/C++ program that would randomize vectors in loop, and draw them on screen, to be able to analyze them.

Impact of dust on electronic component: http://control.com/thread/1026239054 Dust bunnies: https://en.wikipedia.org/wiki/Dust_bunny

When you're using game from Steam or similar system, they are auto updated with the new fixes without user asking about anything. And these fixes can broke something on old gfx cards. And you can't go back to using "yesterday working version"..

He said, game runs normally for 15-20 seconds, THEN it's starting crawling.. If it would be too slow for a game, because of too obsolete parts, the most likely all the time it would have bad performance while playing. Also, games have settings allowing to decrease quality of graphics for older machines. Lord Antares, you didn't say whether it's desktop or laptop. I assume it's desktop computer. Do you have gfx built-in motherboard, or on separate PCI-Express? AGP? PCI? slot. If it's not built-in, ask friend to lend his/her gfx card, and check whether it's working correctly, or is also lagging. Also, it's possible that motherboard chip is overheating. I had it couple months ago. Computer was shutting down randomly. BIOS was showing motherboard chipset temperature > 65 C. After buying separate cooler, stream of air is cooling it down, it's nearly constant 44 C, even after 14h of working.