Sensei

At relativistic speed even impact with photons is going to be problematic, because their energies/frequencies will be blue-shifted. Normal photon in visible spectrum, not harmful, after blueshift could be ionizing spacecraft material.

"Good" kill, movie good to watch by americans especially.... http://www.imdb.com/title/tt3297330/ Wiki link https://en.wikipedia.org/wiki/Good_Kill ps The all "secrets".. It'll all be revealed sooner or later.. At the time you're all dead.. The sooner you think, the sooner you expect.. Regardless of faith..

It's working quite well. You don't have to make add() function at all, you can inline it, like it is showed here: https://developer.mozilla.org/pl/docs/Web/JavaScript/Referencje/Obiekty/Array/Reduce

Reading this might help for a start https://en.wikipedia.org/wiki/Electron_configuration

Have you heard about Sun tides? https://en.wikipedia.org/wiki/Tide https://en.wikipedia.org/wiki/Earth_tide Tides on the Io moon, are great https://en.wikipedia.org/wiki/Io_%28moon%29

Couple things for consideration: - fusion of proton with proton, gives very little energy (from the all fusion reactions) [math]p^+ + p^+ \rightarrow D^+ + e^- +\bar{V}_e + 0.42 MeV[/math] From 0.42 MeV energy part of it takes anti-neutrino. So reasonable amount of usable energy is probably 0.21 MeV per reaction. - solid material has very slowly moving/vibrating atoms. To overcome Coulombs barrier there are needed fast moving particles. Or great pressure. f.e. using current models of stars, our Sun has ~ 150 g/cm^3 density in the core. That's >7 times more than any solid state matter on the Earth. - after fusion particles release energy. This energy cause increase of temperature. If metallic Hydrogen require very low temperatures, each successful reaction will be ruining low temperature requirement...

You miss that people are greedy. This device can be sold just once. Then customer has energy for "everything". But when he/she buy normal electric/gasoline/oil engine, he/she has to pay, pay, and pay, every day for fuel, or electricity. ps. This device the easiest is to make using old satellite dish. It has proper curvature. Cover it with glue. Shatter (or cut in pieces) mirror. And glue them to dish. Or cover satellite dish with aluminium food foil.

You calculate it like electrician. Not like quantum physicist. Start with mass-energy of photon, then go to pair-production of electron-positron pair, then go to pair-production of proton-antiproton, and how proton joins with electron, to bound Hydrogen (this release energy- photon), then to fusion, and further... Like I described here: http://www.scienceforums.net/topic/92274-say-you-believe-or-else/#entry893302 From quantum-physics to classic physics, and electronics, not reverse. Did you? I would say it's pretty standard knowledge.. Free proton has mass 938272046 eV/c2 Free electron has mass 510998.928 eV/c2 Bound together 11H has 938272046 eV + 510998.928 eV - 13.6 eV = 938783031.328 eV (/c2 if you want mass) Divide by 931494061 eV and you have value in a.m.u. 938783031.328 eV / 931494061 eV = ~ 1.007825 u (and you have isotope mass from f.e. here https://en.wikipedia.org/wiki/Hydrogen_atom right panel) (you can't compare with the main Hydrogen website, because they include Deuterium in calcs: like ( mass of isotope*abundance + mass of other isotope * abundance ) = average mass etc) If you add "missing energy" 13.6 eV, you will separate proton and electron, and make atom ionized. H + 13.6 eV -> p+ + e- Providing more energy accelerate newly freed proton and freed electron. Similarly, if you have Deuterium: Free proton has mass 938272046 eV/c2 Free neutron has mass 939565413 eV/c2 938272046 eV/c2 + 939565413 eV/c2 - 2.22 MeV = approximate mass-energy of Deuterium nucleus. D+ + 2.22 MeV -> p+ + n0 In other words Deuterium nucleus "miss" 2.22 MeV To separate proton from neutron bound together in Deuterium, provide missing energy (any way). This way neutron generators are made. https://en.wikipedia.org/wiki/Neutron_source They just need source of energy with K.E. >= 2.22 MeV Can be used high energy photons, high energy alpha particles, etc.

Plentiful quantum physics are based on probability. f.e. you have some single unstable particle. There is no law allowing to predict when exactly it'll decay (otherwise it would be no probability, but determinism). But there are brackets when we can expect it happening. 50% chance it decayed is at half-life time since the start of "clock". There is equation (from experimental data), allowing to calculate how much of f.e. 1000g of this substance will decay to 500g daughter isotopes and other products of decay (and another 500g remain original substance).. Probabilistic law can be used together with deterministic law. f.e. emission of photon (moment when it happens) from excited particle is ruled by probability, while energy released can be deterministic (peak +- some tolerance, again probability). Sometimes it's possible to cheat destiny/probability. f.e. decay of isotope by electron capture (when it's the only allowed decay mode) can be suspended indefinitely by ejecting (ionization) of atom.

Electronic circuit is modulating two or more alternating currents (AC) from two or more sine wave (or other wave) generators, typically. Prior sending them to transmitter. It's very similar to ADSR sound generation (in keyboards for instance), where input sine wave is multiplied by couple linearly interpolated params. It's completely different way of working than while summing frequencies/summing energies of photons at higher energies (in your example visible range spectrum). Energy of photon is calculated using equation: [math]E=h*f=\frac{h*c}{\lambda}[/math] If you enter yours 400nm and 650nm in equation, you will get: [math]E_1=\frac{h*c}{400nm}=3.1 eV[/math] [math]E_2=\frac{h*c}{650nm}=1.9 eV[/math] Add them [math]E=E_1+E_2=3.1+1.9=5 eV[/math] Reverse equation [math]\lambda=\frac{h*c}{E}[/math] and you will get maximum wavelength, corresponding to 5 eV energy, which is 247 nm. What you called "difference", in reality is summing energies of two photons. Exactly reverse. There has to be carefully designed set up which absorbs two photons, and release one photon, which has energy equal to energies of two incoming photons. Two-photon absorption https://en.wikipedia.org/wiki/Two-photon_absorption Second-harmonic generation https://en.wikipedia.org/wiki/Second-harmonic_generation Sum-frequency generation https://en.wikipedia.org/wiki/Sum-frequency_generation

Riding dolphins I am not so sure about. I mean what would be the porpoise of that? Military dolphin https://en.wikipedia.org/wiki/Military_dolphin Dolphins were/are trained to listen device attached to them (turn left, turn right etc), commands send by radio. After attaching explosives to them, was meant to be used to destroy enemy ships quietly.. or to cause explosion/detection of mines..

HDD can be replaced to SSD any time. I would not buy laptop where you cannot replace disk to other. (and put old HDD to external disk adapter plugged to USB) The problem with SSD is that they have pretty low capacity. 2 TB+ in HDD is "normal", have couple such for years. I just saw that SSD 2 TB cost 850 usd here.. 1 TB SSD in promotion: 350 usd. That's 7 times more than for equal 1 TB HDD. You cannot compare price of 250 GB SSD to price of 2 TB HDD. Their parameters (capacity) are completely different. While price near the same.

What I meant is that even if cpu is slow, or hard disk is slow etc. nothing bad happens except user has to wait longer, just comfort of work is reduced. But if monitor has bad quality, it might result in physical damage of eye. With CRT being the worst, as they can emit x-rays. For obvious reasons not used in laptops. But I have seen some crappy laptops, that even a few second look at them 'hurt' literally. And can't think of using them on daily basis. What I meant, don't save money on your health. Worth to mention electronic paper, which switch content, when device has to display something else (f.e. next page in ebook) https://en.wikipedia.org/wiki/Electronic_paper Which is completely different approach to display, than CRT/LCD. "Many electronic paper technologies hold static text and images indefinitely without electricity." That feature is probably wanted the most by old people, who don't remember keyboard layout, and gamers, who like to play at night, with all lights off. WSAD any 3D game player remember, but often it's difficult to hit special rarely used keys (when all lights are off, and the only source of light is our monitor). But who is planning it in advance while buying laptop..

Acceleration from v=0 to v=0.999c would be taking a long time by itself. For exercise calculate how long approximately it would take with a=g=9.81 m/s^2 and how long it would take with 5g, 10g for example. Acceleration with constant a=10g would be pretty unpleasant for astronauts. Not to mention they would not be able to move and do anything. Significantly exceeding these values would kill living organism on board. The most of people lose consciousness between 5g-10g. Special Relativity is widely used while calculating decay of unstable particles, unstable isotopes, and high energy physics to calculate particles created during their collisions, and matter, antimatter creation and annihilation.

He has 2.124 millions views. His YouTube channel has adverts enabled. YouTube pays ~$1 per 1000 views. So he already earned approximately $2k, just on this video. Anyway, it's quite entertaining. Couple things for consideration: - it appears to be made of Aluminium, when piece of metal is moving near magnet (or vice versa), there is created eddy current in metal. Like we can see for example here: I would ask him to make it with plastic and wood, to see difference. - near side of wheel is not connected to far side, ball made of iron is conducting current, bridging them in one place. The other one might be construction, or nothing at all, or hand watch battery somewhere installed creating current in whole construction. - because of placing ball on the left side of wheel, that part has higher mass, than right side. - we don't know what is air circulation near device. I would ask him to recreate it in vacuum, to see difference. If it's not real stationary magnet, but electromagnet, just colored to pretend magnet, pulsing on and off, it would be attracting and repelling (or releasing) ball in wheel (and perhaps eddy currents slowing it down for a while), so one side has higher mass, than the other, causing it to move..

I especially pay attention to LCD screen quality. As it's what you will be watching all day long. Cheap LCD are bad for eyes, and watching them all day long is a real pain. If I would be buying laptop today, I would have to look at it while it's turned on with OS loaded, to see whether LCD/LED/OLED has good quality image.

Small cost = a lot of compromise in quality and performance..

No, I took 91% from https://en.wikipedia.org/wiki/Cotton "The chemical composition of cotton is as follows: cellulose 91.00% water 7.85% protoplasm, pectins 0.55% waxes, fatty substances 0.40% mineral salts 0.20%"

And it's wrong result. 2.22 g of carbon / 12 g/mol = 0.185 mol (all C) / 6 (atoms of C) = 0.030833 mol * 2 * 14 g/mol (of N) = 0.8633 g of N which is the same as 2.22 g * 0.389 = 0.8633 g Going my initial thought (and independent Itoero from post #17) 5 g * 0.91 (91% of cellulose in Cotton) = 4.55 g / 162.144 g/mol = 0.028 mol * 2 * 14 g/mol (of N) = 0.784 g of Nitrogen needed. (difference is caused by initial multiplication by 0.91) Although I don't understand why you calculate amount of Nitrogen, while we're interested in nitric acid in the first place. 0.028 mol * 2 * 63.012 g/mol = 3.53 g of HNO3 needed. ps. 72+80+10 = 162 You said, it's not even closer to that value. I was not talking about mass of whole long chain compound, but single monomer unit. Itoero interpreted it correctly.

+1 What is product of KNO3 and H2SO4.. ? And in what proportions they need to be.. ?

Can I answer by PM.. ? To not influence answer by OP.

If you have 5 g of cotton, how many moles is it? If you have 50g KNO3, how many moles is it? If you have 80ml H2SO4, how many moles is it? If you have 1000 g of water, how many moles is it?

From http://www.drivers.com/download-help-sdu.php "Full access to over 600,000 Software Drivers" Again, proved wrong. There is approximately as many drivers are there is device models, multiplied by number of OS APIs for drivers (driver developer kit, DDK, or Windows Driver Kit, WDK). Multiplied by 2 (32 bit/64 bit). Or so. f.e. https://en.wikipedia.org/wiki/Windows_Driver_Kit#DDK_Versions Generic drivers are provided by Microsoft, not device manufacturer. f.e. generic gfx driver does not have GPU acceleration, just pixel-by-pixel draw lines. To have proper full speed of hardware there is needed proper driver from device manufacturer. They know how to code their hardware, after all they made it. All secrets of HW.

Pressing negative vote, means "we don't agree with what is said in post" (partially or totally), without going into senseless discussion "why it's wrong" (objectively) or "why in our opinion it's wrong" (subjectively). (As you ignore any reasonable argument or question. That's not blog, nor preaching zone. It's discussion forum) Reversely, pressing positive vote, means that somebody agrees with post. So far you have 19 negatives. 19 people disagree with you. Something like 16 of them are not from me. Unlike you, I have 390 positive votes. If you would be less "angry" (for whatever reason, you are acting like that), and didn't start with this ridiculous "I am the most intelligent organisms on the Earth", that was deleted and end up in trash, perhaps people would like to hear what you want to say. You missed your unique chance for making good the first impression. Not smart at all..

I wrote PCI card driver ~15 years ago for C-Media sound card, yet another I forgot name, some version of Sound Blaster, and 3D gfx card. Different models have completely different hardware registers. At that time sfx card had 1 channel or 2 channels, one for each speaker. Now modern sfx card can have multiple speakers simultaneously connected. I have here 5 speaker system. Method of programming them depend on how they were designed by engineers. Sound cards with DMA for instance, require setting up address of block next to play each time when currently played block is finished (double buffering), properties of sample (8 bit signed, 8 bit unsigned, 16 bit signed, 16 bit unsigned), frequency, volume, and the length of data in block. The shorter length of block, the more often we have to provide new data, CPU usage will be higher. It's all done inside of interrupt routine. CPU normal work is suspended, all CPU registers stored, and interrupt routine installed by driver is called. (similarly multi-threading is implemented) Sound cards without DMA, are (were) (because they probably all extincted, not produced anymore) programmed completely differently. There is register in which there is write-only current sample data. Programmer has to write it, wait exact number of cycles, write again, wait (cycles), write etc. in loop. Or utilize other interrupting routine, just to feed HW register with new sample. (on Atari 8 bit for this purpose there was utilized DLI (Display List Interrupt), that was called 15625 times per second or so) On the top of this there is running the main virtual channels mixing routine, which is mixing f.e. 32 virtual channels to f.e. 2 physical channels. The more speakers sound card can handle, obviously the more registers present. So don't tell me that driver good for 2 channel system is good also to multi-speaker card. It's plain gibberish. Drivers are in bigger packages for convenience of end users. User is going downloading one huge driver archive. Does not have to bother to find exact card. It's leaved to installer to pick up right one from library.