Sensei

Dekan, why not buy stuff to perform experiment by yourself... ? http://www.scienceforums.net/topic/86377-where-to-start-with-quantum-theory/?p=835895 At least with photons and different slits setups.. With electrons you would have to have electron gun, and vacuum pump, and f.e. Cockcroft-Walton generator. I have two setups for Young's experiment. In one slit width 0.05 mm, distance between slits 0.1 mm. Second one slit width 0.03 mm, distance between slits 0.06 mm. (I just destroyed/damaged it with too powerful blue laser, and it started burning with noticeable smell...) I have several setups for diffraction in single slits, several diffraction granting, several polarization filters..

Buy laser.... Photons are traveling through vacuum, if you don't know.. Sound waves are traveling through medium that's made of regular matter, and cannot pass through vacuum, as there is no medium. Which can be seen and heard on videos on YouTube made by ordinary people making rockets. The higher altitude the less sound. Not really surprising..

Somebody making PCB often should rethink buying soldering dip, soldering pot/bath http://en.wikipedia.org/wiki/Dip_soldering They start at 50 usd here. Are you really sure you need PCB? Most of time, when current and/or voltage are low, breadboard is better solution, if you're not planning selling it. (there is no problem replacing broken part) In any case breadboard should be used first to investigate whether circuit is well designed. I am making PCB when current is too large, and breadboard is starting melting (which you can smell).

In typical fusion process, one free proton has to overcome 2nd free proton Coulomb's repelling force. [math]p^+ + p^+ \rightarrow D^+ + e^+ + V_e + 0.42 MeV[/math] For later reactions happening in star see this thread: http://www.scienceforums.net/topic/85656-solar-fusion-neutrinos-and-age-of-solar-system/

On Earth, 1050 W/m^2 is also energy per second per meter at cloudless noon. To calculate energy per whole day, it's long way.. You need to calculate calculus of graph, x axis time, and y axis power. Power is growing at sunrise, then maximum is at noon, and going to 0 at sunset. ps. I think this should be split to separate thread..

Moon doesn't have atmosphere. Earth would receive ~1367 W/m^2 if it wouldn't have atmosphere, with atmosphere energy reaching ground is ~1050 W/m^2. Moon would receive everything.

Be careful what you are talking (unless you're not anymore in your country). Yesterday they killed actor Alexei Devotchenko http://en.censor.net.ua/news/310489/russian_actor_alexei_devotchenko_known_for_antiputin_and_proukrainian_views_found_dead_in_a_pool_of

First of all, Refractive Index is not constant in the same medium for different photons. Photons with different energy/frequency/wavelength entering medium can have different RI. f.e. glass is transparent for visible photons (400 nm- 700 nm) and opaque to infra red photons. We can change RI on demand. http://en.wikipedia.org/wiki/Kerr_effect Secondly, I am also addressing to you what I have said here: http://www.scienceforums.net/topic/86377-where-to-start-with-quantum-theory/?p=835895 Buy stuff mentioned in thread, and start making experiments in the real world. Take container (aquarium), fill with water, or other transparent liquid, and pass through them lasers at different angles and observe where beams will be going. You will be able to calculate RI of medium. Actually it's very spectacular, especially with blue light laser at night. We can see beam of laser how it's passing through water.

Sounds like you have no idea how science theories are created... We have experimental data obtained in experiments. Somebody is seating on them, day and night, analyzing data and is creating function f(x)=.... where x is used somewhere in equation. f.e. place ruler vertical, attach camera on tripod, start recording, place object at top of ruler, release object, then load recorded movie to animation editing software, and read where object was at different times. You will receive function telling position of object depending on time variable [math]f(t)=\frac{1}{2}*9.81*t^2[/math] Then you can release your idea to public to review..

Typical speculation here on forum is from members that don't even know from memory what is Planck const, what is speed of light, what is mass of electron, what is mass of proton, never heard about Rydberg const, nor Compton frequency/wavelength.. They basically don't even have basics of basics. It *does* matter who is speculating..

Every apartment should have its own solar panels 18 m^2 (at least) on roof or walls surrounding house. This is the most efficient way - it doesn't have to transform from DC->AC, then to high voltage AC 220 kV, then to lower voltage AC 230 V, then in home in each device transformed back to low voltage DC like 5 V, 12 V.. Many transformations, just to get energy to your home from long distance with as less as possible loses, is causing a lot of loses during transformation process (sending DC for long distance would be even worser). When you can have energy that you need just a few meters from you. Just everybody have to have his/her own "solar power station" and accumulators enough for 24h. But this way nobody would earn money. Energy industry, companies developing power stations & fuel, government (vat tax, cit tax, excise duty). And ordinary people would have electricity for free..

IMHO you should start from buying lasers. Red, green and blue at least. https://www.youtube.com/watch?v=HOPyo0T2sRU There are setups for diffraction granting (couple different models 1000 slits/mm, 500 slits/mm at least), http://www.eduvis.pl/oferta/fizyka-pomoce-dydaktyczne/optyka/siatka-dyfrakcyjna-z-1000-szczelin-mm-detail (2 usd for each) polarization filters (typically two are needed), http://www.eduvis.pl/oferta/fizyka-pomoce-dydaktyczne/optyka/zestaw-nr-2-do-badania-zjawiska-polaryzacji-swiatla-polaryzatory-liniowe-detail (4.24 usd per each, 2 in package) single slit (different widths of slit) and double slit (different distance between slits and width of slit). http://www.eduvis.pl/oferta/fizyka-pomoce-dydaktyczne/optyka/zestaw-nr-9-do-badania-interferencji-swiatla-doswiadczenie-younga-detail (3 usd per each, 2 in package) You can even build particle detector at home for 50 usd or so. Here is example instruction (in half hour or less): http://www.ultimate-theory.com/en/2014/6/8/how-to-build-cloud-chamber-particle-detector Enter "Cloud Chamber" in YouTube, and you will see many examples how it works: It's showing traces leaved by radioactive isotopes that are decaying, or primary and secondary cosmic rays that're decaying or flying through medium all the time (but we don't see it).

I suppose so, he already installed Android Emulator? http://developer.android.com/tools/devices/emulator.html That's probably the first thing people do after SDK.. The last time (2-3 years ago IIRC) we installed Android v2.2 emulator on PC (it's still installed on my server machine), and it was working tragedy.. You have to remember it has to emulate either different CPU, and GPU, and whole OS.. It was faster to upload app to real phone, than start up emulator.. If he has not the fastest PC on the Earth, he might be disappointed. Anyway try emulator from the link above. Maybe with v4 it will be working better than I remembered it..

Indeed. But word explosion has origin at Earth's chemical reaction- mixing of (usually) solid with Oxygen from air/2nd substance Oxygen-rich to form gaseous products. In vacuum such reaction is impossible (as there is no Oxygen). Typical explosion is isotropic - equal in the all direction, but has origin - place where is fuel. Direction of explosion can be controlled by 3rd party elements already present in space around it. There are theories that are based on analyze of galaxy velocities showing it might be not the case, like dark flow: http://en.wikipedia.org/wiki/Dark_flow Universe being homogeneous and isotropic was in fact assertion without analyze of enough of data. If Universe is homogeneous and isotropic, it's CMB shouldn't look like it looks: It looks as farthest from isotropic as possible. Hawking radiation has never been observed, so no one should talk about it as something really existing.. It's based on idea that there is existing positive mass, and negative mass. Yet another not existing, not experimentally confirmed idea.

Search google for "phone tripod adapter" http://www.amazon.com/ARKON-Smartphone-Tripod-Adapter-MG1420/dp/B007WRBO6I 10 usd. Different model for 25 usd http://www.amazon.com/RetiCAM®-Smartphone-Tripod-Mount-Universal/dp/B00FS5L9D4

Learn about beta decay plus. In this process unstable nucleus (proton rich) is emitting positron. Antimatter, antiparticle of electron, with all properties the same as electron, except charge. Are you expanding your idea also to positrons? Learn how antiprotons are created in particle accelerators: [math]p^+ + p^+ \rightarrow p^+ + p^+ + p^- + p^+[/math] Relativistic accelerated proton is colliding with proton at rest, and 2 new proton-antiproton particles are created in this process.

First of all, you should tell us "acceleration in what medium?" When electron is emitted in vacuum, answer will be different than when electron is emitted in air. Slow electron moving in air, can travel only very short distance. Electron accelerated nearly to speed of light flying through air medium is causing ionization along its trace, and air molecules are slowing it down. So suddenly it stops moving. And its trace is disappearing in that place. This can be seen in Cloud Chamber.

Put camera on tripod and let it record freely. They are feeling your presence. Then you will find and edit in post processing software the best parts, and cut them away to separate parts.

I am wondering- what would happen if you would give them too much food at once, f.e. portion normally for whole week. Would they eat everything all at once, or would leave something for later..

Then you're both in wrong section. Joke section is here http://www.scienceforums.net/forum/3-the-lounge/ I just wanted to show you experiment, that everybody is learning at school, but nobody is performing in real - after all how many of you have vacuum chamber with dozen meters height...

Development aid is not the the same as feeding hungry people.. (read more about burning food in western countries to not ruin market, giving it for free. That ends up majority with out of date) Helping became business these days. People are joining in, not because they want to help from the bottom of their heart, but because find it nice business opportunity. And/or a way to decrease their taxes.. I bet in these development aids there are also included (and have majority of share) f.e.: - structural investment.. Government of country is giving public money to some company from the same country, for building f.e. power station, road, building in Africa. And their own citizens and company is earning that money.. It's sweep under the carpet as cheap loan to country, then that country immediately is paying bill for investment to company from the same country which gave loan. - scholarships for students from foreign countries accounted to 3rd world. Government funds these people free education on western university. And gain money goes from public money to private universities in the same country..

Not exactly. When you've shares on your account, you're co-owner together with thousands or millions of other people. Suppose so company issued 1 mln papers. You bought 10,000 shares. So you've 10,000 / 1 mln = 1% of company. When you will exceed 5% of shares, any operations, selling or buying has to be reported to company and it'll inform the market in official statement within 2-3 business days. (In different countries there might be other regulations regarding significant operations on shares) After exceeding certain percentage of shares, you're allowed to be included to Supervisory board by yourself or your man, or even became CEO. I have stock markets accounts, and all the time during session watching prices on 2ndary monitor. I have also written couple applications.

See Sun's energy output on timescale: According to this model, around 400 mln after formation, Sun was emitting 75% energy than now. It's believed Earth at that time was snow-ball. See calculations from post #11. Current 2637 W/m^2 of Venusian surface is 2637*75% = 1978 W/m^2 at that moment (44% more than current power on Earth)

Yes. It would require checking several setups - animals that are family. Animals that are male-female. Animals that are male-male, female-female (unknown). Hamster is pretty cheap here, just 4 usd per each. But what I would do with them after test? (I would kiss them, because they're so cute)..

C'mon! I wanted to see them eating bread on video I was thinking this week, what would happen if I would have two mouses/rats/hamsters separated by glass with little hole (too small to move freely), and one I would give plentiful of food, and other nothing. Whether the one that has more would share with the one that is hungry.. And record it on video, and spread it on the Internet.. If one rat would share food with other hungry one, that don't know each other, to survive together, why humans don't do the same.. ? Why humans in America became fat nation, and let African's children starving and die... ?