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Everything posted by Sensei
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Sub-photon Radio wave experiment - Your predictions
Sensei replied to Theoretical's topic in Quantum Theory
One of the cheapest I saw... http://www.hantek.com/en/ProductDetail_2_44.html It's not 100 MB/s, but 100 MS/s (mega samples per second), and according to producer website it's 8 bits resolution. It's supporting USB 2.0, which has max 480 Mbps (max 60 MB/s). Effective 280 Mbps (35 MB/s) according to wikipedia. But here there is said communication speed is 12 Mbps http://www.circuitspecialists.com/usb-oscilloscope-dso-2090.html -
Sub-photon Radio wave experiment - Your predictions
Sensei replied to Theoretical's topic in Quantum Theory
What oscilloscope model do you have? Is it digital or analog? "Oscilloscope software" suggest it's digital model with USB. What is its vertical resolution? How many bits? Rate? Which oscilloscope model have nano volt resolution? -
Sub-photon Radio wave experiment - Your predictions
Sensei replied to Theoretical's topic in Quantum Theory
Unlikely. Do you have any idea how much energy has photon at 49 MHz? [math]6.62607004*10^{-34} * 49*10^6=3.2467743196*10^{-26} J[/math] [math]4.135667*10^{-15} * 49*10^6=2.02647722512406*10^{-7} eV[/math] Green photon f.e. 532 nm has 2.33 eV. Nearly 12 millions more energy than photon at 49 MHz. We are flood with photons with higher energy. They are absorbed, emitted, absorbed, emitted, all the time. And heating environment. Piece of metal used for antenna, will absorb and emit tremendous more energy (black body emission at room temperature) than such single photon.. Power equation is: P=I*U if you multiply it by t both sides, there is equation for energy (energy lost by electron flowing through conductor, later emitted as f.e. MW,IR,or visible spectrum as photons to cool down resistor/conductor): P*t=I*t*U E=I*t*U But I*t=Q is charge, so E=Q*U and charge is quantized to e=1.602176565*10^-19 so you have E=e*U Substitute h*f=e*U and solve for your photon @ 49 MHz, U will be 0.2 uV (micro volt) Try this: take voltmeter, set to the smallest voltage possible to get, connect to some metal piece, and observe. It's jumping back and forth, randomly. ps. I am not trying to discourage you, if you really want to perform experiments. You should perform them, to learn and gain knowledge. But you also have to be realistic. -
Telekinesis, telepathy and their impact on science [Absolutely NONE]
Sensei replied to Eldad Eshel's topic in Speculations
Maybe everything what you see is not true. But that's straight way to permanent conspiracy breakdown.. With provided by you video, at least to me, objections appear immediately. But that's not the point. Saying something on forum is cheap. Does not cost effort. Just press couple keys on keyboard and send. Making and showing video require some effort. If it's just trick, you need to be quite desperate to make it. Yet another step is making trick in front of public requiring even more effort. And making trick in front of scientific community require tremendous effort to convince. If it's not trick all 3 last cases, are easy, as they happen without any effort. After making and showing what he has, I would judge by myself whether it's trick or not. And if I have objections ask for further videos with my objections fixed. -
Telekinesis, telepathy and their impact on science [Absolutely NONE]
Sensei replied to Eldad Eshel's topic in Speculations
Great. Then you should have no problem making video on YouTube. In such way nobody will have objections about cheating, using motors, air etc. devices to move it. -
Typically if you have NaOH and acid H-R, after reaction they give Na-R and H2O.. Isn't the same with this compound?
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I know about octal and hexadecimal https://en.wikipedia.org/wiki/Octal https://en.wikipedia.org/wiki/Hexadecimal But it's mathematics, not engineering.. Unless you meant software engineering? But it's part of computer science area.
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Can this be analyzed by how much they like/dislike Country music.. ? Prior industry era, division was very easy, and worldwide the same, by how people spend their time. Whether they are peasants or doing something else for living. It's hard/impossible to harvest, raise pigs, or cows in town/city. In modern technological world, you can be in middle of nowhere and still have electricity from solar panels, internet, and doing anything what you want through net. Here town has to have Town privileges https://en.wikipedia.org/wiki/Town_privileges It requires to have more than 2,000 people, with 2/3 people employed outside of agricultural industry. It is not strictly adhered. The largest village has 13k+ people. The smallest city has <1k. Town or city with less than 100,000 people have Mayor, while larger cities have President of city.
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Magnetized objects are very easily visible, as they f.e. attract iron, bend paths of charged particles, split spectral lines of gases in plasma state etc. If star would be magnetized to serious level, it would be visible in spectrum of that star. Magnetization spreading on entire galaxy would have to have tremendous power.
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To vacuum or not to vacuum ethanol: A Solvent Recycler Drama
Sensei replied to tom_kha's topic in Applied Chemistry
This looks like repeating of what has been said in this thread... Nearly word by word.. http://www.scienceforums.net/topic/87701-vacuum-distillation-of-ethanol/ -
When life is good, any living creature want to live forever, or at least as long as possible. "Life is good" is pretty much subjective. Millionaire can have depression, and want to die, while some homeless, jobless, everyday searching for food in trashcans, might want to live. People die mostly because malfunction of some internal organ. If ill is diagnosed at the right time, internal organ can be replaced. With currently few exceptions. Currently it's done by taking organ from dead body, and transplantation. At ridiculous costs completely not adequate to what is done. In material world poor people automatically excluded.. Somebody has to die, to somebody live. This is problematic. Either there must be enough of dying people (in accidents, where there is brain failure, and all internals are intact), and they must have the right properties, starting from blood group. If transplantation would be done not from dead body, plentiful of these issues would be gone. And life time extended to hundred or more years. In mine opinion, the most of people, are currently wasting their lives, wasting their time. What they would do if there would be instead of 80 (+-20) years, say 800 years? Right now they waste their time. Part of problem is lack of money for education in early age. Money. It must be gone. There is no place for money in the heaven. Nobody can ask for money for doing or not doing something. Private property means nothing. Nobody owns anything, so nobody can steal anything. There is no thieves, no robbery nor any other criminal acts in which money is source. People living forever should work in jobs they like, not for money, as they won't see any, but to be useful for entire community. Automatically programmed hardware failure won't have any sense (it's done to force people to buy the same thing again, and again, like 1000 hours lifetime of light bulb ) Instead preferred will be hardware working as long as possible, and easy fixable. It costs less energy, and less time, to fix something than building the same stuff from scratch. Kids should learn quantum physics, chemistry, biotechnology, medicine, IT, etc. since the beginning of their life. For humanities subjects they will have entire eternity. Well educated people are less vulnerable to brainwashing. And they are valuable members of community. That's the simplest thing.. That could be even right now in progress, if Voyager or other human made satellite were not absolutely sterile.. Bacteria, virus, could spread from them to some other world after billions of years of flying.
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Description how to build such device is f.e. here Cheap in building, is running on dry ice, but is expensive in usage (unless you have unlimited access to dry ice, or air liquefier), Expensive in building one use Peltier coolers, but is cheaper in usage. If you will put radioactive element, radioactive isotope, in Cloud Chamber, you will see traces leaved by newly created particles, escaping your sample. And ionizing medium. Bubble chamber is much more expensive, and much more dangerous, as it has amount of liquid Hydrogen enough to wipe out entire building.. Come with questions in the mainstream physics sections (instead of conjectures, hypothesis, speculations),, and we will be happy to answer them, if we will be able to.. This way you will learn and gain knowledge. +1 for enthusiastic reaction for knowledge (illustrated by video, which no doubt help)..
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Individual particles in some cases, when they have high kinetic energy, are starting to be visible by naked eye.. By device that you can build by yourself for $50 and see by yourself. They are leaving traces in particle detectors. Particle with high kinetic energy is decelerating in medium, through it pass by, and ionizing that medium. The higher kinetic energy particle, the longer trace. Alpha particles (+2e charge) are leaving thick, short trace. Beta electron particles (-1e charge) are leaving thin, long trace. And they can be photographed, or filmed: Cloud Chamber particle detector https://en.wikipedia.org/wiki/Cloud_chamber Bubble Chamber particle detector https://en.wikipedia.org/wiki/Bubble_chamber If there is provided external electric/magnetic field, traces are bending accordingly to charge and mass of particle. Negative electrode will attract positive alpha, positive antimatter positron, and repel negative electron etc. Positive electrode will attract negative electron, negative pion, negative kaon, etc. This is NOT mathematics. Mathematics is just used to predict what will happen in future, what is seen in detectors already. If apple fails from desk, you can calculate f.e. time it flied prior reaching ground, you have math equation, then the next time you will release apple from hand, you will be able to predict when it will reach ground. From observation is made math equation, then math equation can tell you in advance when and how something will be acting.
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What is the minimum number of properties posessed by members of a set?
Sensei replied to studiot's topic in Mathematics
How about set which contains just infinity.. ? [math]\{\infty\}[/math] What can you say about property of such set? -
That depends on how we interpret OP words. I must say, I interpreted it as increase of energy per photon and decrease quantity ("magnify photon" in presupposition energy), but indeed it could be interpreted the other way around, as decrease energy per photon, and increase their quantity. But it would make less sense, in this context. If we down convert red or green photon, newly produced photons will be no longer in visible spectrum.. rendering it no longer "light source".. And OP wanted to have photons in visible spectrum ("light source").
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Second-harmonic_generation https://en.wikipedia.org/wiki/Second-harmonic_generation "Second harmonic generation (also called frequency doubling or abbreviated SHG) is a nonlinear optical process, in which photons with the same frequency interacting with a nonlinear material are effectively "combined" to generate new photons with twice the energy, and therefore twice the frequency and half the wavelength of the initial photons. Second harmonic generation, as an even-order nonlinear optical effect, is only allowed in mediums without inversion symmetry. It is a special case of sum frequency generation." Sum-frequency generation https://en.wikipedia.org/wiki/Sum-frequency_generation It can be visualized by short sentence: two photons with smaller energies are absorbed, one photon with higher energy is emitted. You miss entire knowledge behind it.. So I would suggest to start from reading above links. Where did you get idea that Graphene has such properties.. ? "Storing photons" also might mean simply heating material. Material is then emitting black body spectrum, depending on temperature of object. It's typically lower than visible range of spectrum, f.e. infra red. Thus we don't see something is hot. Unless it's extremely hot. f.e. melted metal is starting emitting red photons (then yellow, then white), when its black body spectrum is shifted to visible range and temperature is very high. Black body radiation article for you to read: https://en.wikipedia.org/wiki/Black-body_radiation Sounds kinda like fluorescence, luminescence. https://en.wikipedia.org/wiki/Fluorescence https://en.wikipedia.org/wiki/Luminescence Permanent? No. It works until all stored energy is released and emitted. Photons are absorbed all the time by our devices. And emitted later, on demand. f.e. solar panel with accumulator, charged in day, discharged at night, by light bulb. Vegetables are converting photons, Carbon Dioxide and water into sugars. It's their way to store energy for later use.
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The problem is you cannot translate it to mathematical equation.. It requires absolute knowledge in current quantum physics.. So you should study the links that I gave in my post. Without extremely good knowledge in quantum physics all your estimates will be quickly overthrown.
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Sensei means teacher in Japanese. I am just learning quantum physics. Instead of humiliation, I prefer to learn layman something. Prior mine post there was no single post about science. Just gibberish. Being scientist means being Sensei, being teacher, to humanists, and other people that didn't learn in school how Universe is working. Be Sensei. be teachers, At least on physics forums.. Spread knowledge, instead of humiliation. It means you have to explain everything. If you don't have time, ignore post, and let other explain things. Why I always have to be the first one to mention absorption or emission? That should be mentioned in the first reply to initial post?! OP, being layman, doesn't know how to describe it in scientific terms, but scientists should see what is meant from context. Even if not proper words are used.
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elizsia, what you said in post #1 is pretty much layman version of annihilation, pair production, absorption, emission, fusion and decay from normal quantum physics. Take for example reaction of making electron and positron: [math]\gamma + 1.022 MeV \rightarrow e^- + e^+[/math] High energy photon is turning to electron and positron. Photon has at least double energy than electron and positron. Photon is neutral particle, electron is negative charge particle, positron is positive charge particle. Thus charge prior reaction is equal to charge post reaction. Electron and positron have rest-mass/energy 510998.928 eV/c2. It's exactly (2*510998.928 eV/c2)*c2 = 1.022 MeV Energy prior reaction is equal energy post reaction. Even though it's in rest-mass of newly produced particles. If more energy photon is used, newly created electron and positron have more kinetic energy. If less energy photon is used, nothing happens, there is no pair production. Instead there could be Compton scattering. That is, charged particle is absorbing energy from photon, being accelerated, and newly made photon has smaller energy, smaller frequency, higher wavelength.. Photon is gone. It turned to pair of charged, massive particles. If charged particle will meet charged its anti-particle, they will annihilate, producing photons back. If you accelerate charged particle, it has higher kinetic energy, moves faster, has higher relativistic mass, and upon hitting some object that kinetic energy can create photon, and initial particle is decelerated. I suggest you reading following articles: https://en.wikipedia.org/wiki/Annihilation https://en.wikipedia.org/wiki/Pair_production https://en.wikipedia.org/wiki/Beta_decay https://en.wikipedia.org/wiki/Alpha_decay https://en.wikipedia.org/wiki/Proton_emission https://en.wikipedia.org/wiki/Neutron_emission https://en.wikipedia.org/wiki/Compton_scattering If you're interested in the reactions happening in core of star, I wrote them in f.e. this thread: http://www.scienceforums.net/topic/85656-solar-fusion-neutrinos-and-age-of-solar-system/ Annihilation of electrons and positrons is responsible for 7.65% of energy emitted by our Sun. In plentiful of reactions if photon is absorbed, it's gone from system, it can be later emitted, after shorter or longer delay. If you would be the real scientists you would like to measure time while photon is absorbed and emitted. But there are reactions such as pair production, when photon turns to matter and antimatter, they can be in that state indefinitely long time.. Counted in even billions of years. Photon (light) is term used to describe particle with neutral charge, which disappears after absorption, and appears after emission. Traveling with speed of light, between absorption and emission. When photon is absorbed it contribute to total energy of system. But they no longer travel at speed of light.
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Catalyst needed to create dustless chalk
Sensei replied to perfect chalk's topic in Inorganic Chemistry
You should verify competitors product whether it's Calcium Carbonate CaCO3, or whether it's Calcium Sulfate CaSO4. It can be either of them mixed together, in various percentages. Calcium carbonate undergoes reaction with Acetic Acid: CaCO3+2CH3COOH->Ca(CH3COO)2+CO2+H2O It releases Carbon Dioxide CO2 gas bubbles and water, and creates Calcium acetate. So, first verify product of your businessman, dissolving it in acetic acid, then repeat the same with competitors product. If they were pure Calcium Carbonate, there should be no significant amount of remains. Calcium acetate is quite good soluble in water 34.7 g/100 mL @ 20 C. For 100 grams of Calcium Carbonate, you will need ~120 grams of Acetic Acid, which is approximately 1200 mL of Acetic Acid 10% by volume. Shouldn't you in that case think how to make electricity in the first place? Solar panel for $250-$300 can give you ~200 Watts, and working "forever", say 30 years, without any additional serious costs.. That is $0.02 (2 cents) per day of working. https://www.google.com/?gws_rd=ssl#q=solar+panel+200w -
Accumulator and battery technology calculation issues.
Sensei replied to Ivan Tuzikov's topic in Engineering
Do you have any idea how much power is needed to send data to satellite? See mobile phones, what they have range.. See WiFi routers, what they have range. Approximately 100 meters in free from buildings area. And they are connected to AC mains. So they don't need to worry about energy consumption. And still their range is very low. For the same reason, radio controlled devices like drone have range limit. Have a read here f.e. https://en.wikipedia.org/wiki/Antenna_%28radio%29 Also inverse square law https://en.wikipedia.org/wiki/Inverse-square_law The smaller power can be used when there is used directional antenna, but this requires knowing exactly where is object that should receive our signal. Precision to mili meters is needed and antenna must have their own motors to control axes. -
If you shine light on f.e. metallic sodium, potassium, calcium, magnesium, If light has correct color (frequency,wavelength,energy), electrons are ejected, and accelerated accordingly to photon energy minus energy needed to ejection. If color is wrong (too low frequency/too low energy) nothing happens. In classic physics energy of light is same when we shine f.e. double intensity of red light, as half intensity of blue/violet light. Blue/violet light has approximately double frequency of red light. But if it's done with photoelectric effect, light with wrong color is not ejecting electrons. Even though intensity is very high. Energy of photon is E=h*f If we multiply it by quantity of photons (intensity), we get total energy of light. If you sum all energies of all photons all frequencies, you have total energy of f.e. white light, or multi-color light.
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There are even mediums which change refraction index, thus speed of light in medium, after applying to medium external electric field, or external magnetic field. It's done f.e. placing electromagnet near medium, and passing light through medium, when electromagnet is turned on, and when electromagnet is turned off, and comparison between them.
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Indeed, speed of light, while passing through medium varies from the one in vacuum https://en.wikipedia.org/wiki/Speed_of_light#In_a_medium
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To really explain black hole formation there is needed quantum physics and general relativity unification..