Jump to content

Sensei

Senior Members
  • Content Count

    5924
  • Joined

  • Last visited

  • Days Won

    13

Everything posted by Sensei

  1. Bart, while satellite is orbiting around Earth, it's once closer to Sun, once further from Sun. You have not addressed issues caused by Sun gravitation though. The same with Moon and other solar system objects. Moon can rise water for a couple meters, so it's not so small influence. 6378100 is radius at equator. After using average 6371000 and more correct constant values, result is higher than Bart's initial 45629.9 I attached file, so anyone can load and modify. satellite calcs.zip Bart, you should t0 multiply by 60*60*24*10^9 prior dividing. This way you will have higher precision. IEEE floats have limited precision.
  2. Can you measure nanometers using ruler? No. It has 1 millimeter precision.. Similar with other measuring tools. You're limited to their precision.
  3. If you're working at university you can get educational license for $195. "LightWave 11.6 Educational Available for Students and Faculty Staff" Trial has 30 days. Then demo is probably limited by not able to save objects or so. Don't remember exactly. There are other apps like free Blender. But people often complain about its interface.
  4. It's well known fact, if you would know subject. ~85% of neutrinos are coming from p+ + p+ collisions, and are not possible to detect by Chlorine-37 based neutrino detector. Be-7 + e- -> Li-7 + Ve + 0.862 MeV (15% of all neutrinos) B-8 is responsible for just 0.1% from 15% of all neutrinos (small quantity, but large max energy possible). http://en.wikipedia.org/wiki/Solar_neutrino http://en.wikipedia.org/wiki/File:Proton_proton_cycle.svg Energy 0.420 MeV from p+-p+ collisions, doesn't mean that neutrino takes it all. They share it randomly with positron. 0.42 MeV is sum of energy of neutrino + kinetic energy of positron. I am just saying about neutrinos detection methods. If detector didn't detect anything it doesn't mean that there was no particle there passing through it. I am considering neutrinos from proton-proton collisions as "low energy neutrinos". 18 MeV max from B-8 versus 0.42 MeV max. That's huge difference, 43 more energy. Lower energy neutrinos is 5.6(6) times more than those with larger energy (Be-7) and >5000 times more than from B-8. Detection of neutrinos is harder, but their quantity per cm^2 is higher. Higher probability of collision with some nucleus. And we don't know for sure how they influence unstable isotopes. Chlorine-37 example shows that they can influence even STABLE isotope. You're just repeating your personal opinion. I told you- prepare isotopes and check it by yourself. Then you will have experimental verification.
  5. It is LightWave 3D https://www.lightwave3d.com/ It costs $1500. There are other 3D applications: Maya, Cinema 4D, 3D Studio Max, Houdini, etc. etc. I am writing mine own plugins for it, if needed. They (usually) analyze polygons and points data, and output new geometry, or showing thing that they calculated (like area of polygon(s), or volume of 3d object). Making area counting tool is very easy: just scan all selected polygons, and add together their areas one by one. Hope so I don't have to ask you whether you know formula of area of triangle.. Then show final result in window. Showed on anim gif above boolean tool is standard tool (Modeler's Construct > Boolean). Boolean tools regardless of 3d application always have at least modes: unify, subtract, intersect.
  6. Forget it. Solar panels are much more reliable and cheaper. Once I calculated that I would need 18 m^2 of solar panels with 15% efficiency to cover all mine needs whole year. Solar panel 1.28 m^2 (1600x800mm) costs here $315. So total investment in 14 panels would be $4410. Inverter I could make by myself. That's price of electricity from power station for 67 months ($66 per month). After 5 years and 7 months, I could have pure free electricity forever.
  7. Dr. Funkenstein, you showed us great amount of lack of knowledge. At the beginning you should start from reading inverse square law. http://en.wikipedia.org/wiki/Inverse-square_law Which describes how particles are emitted in the all directions by sources like light bulb, LED, Sun etc. Do you know that even this message went through fiber wire on the bottom of ocean with speed of light.. ? Fiber wire is using photons to transfer data. Buy 1 km fiber wire, 10 km fiber wire, 30 km fiber wire, connect them to laser, turn laser and measure delay.
  8. In such cases I am simply making object in 3D application, then using boolean tool or cutting tool, and running area counting tool on newly made cross section polygons. 3D apps also come with volume calculating tools. The more geometry at beginning, the more precise result will be.
  9. Any theory without math, just lingual philosophical talking, on this forum (and the most of other moderated science forums) ends up in trash, sooner or later. Sounds like you wasted a lot of time. Instead you should have learned everything what we know. Then you could be at least qualified opponent to discussion.
  10. Somebody coming with ToE must be able to calculate everything and know everything. Especially basics.
  11. Please calculate for us how much energy will be carried by particles (and tell us what they're) of decaying Tin-121 isotope. If you cannot give such easy answer, you have not even started making your own ToE.
  12. OMG.. You have to subtract 1 because lists are starting from index 0... Human indexes are starting from 1. Computer indexes are starting from 0. If you have list with 4 elements, 1st element is at list[0], 2nd element is at list[1], 3rd element is at list[2] and 4th element is at list[3]. There is no imaginary numbers in this (completely nonsense) example.
  13. But every time, in different place.. To some very small level, yes. But quite unpredictable source of energy. You would need to connect the all lightning conductors on area f.e. few km square together and then downgrade voltage from a few hundred or millions Volts with small charge, to lower voltage but higher charge. We have here in neighborhood metal cross (15m+) on the top of mountain (nearly 2 km high). I read somewhere it's hit by lightning once per day average. If it has average Q=15 C and E=15 MJ (wikipedia has such average) it's 5.5 GJ energy per year = 1521 kWh. If we would have no loses in transformation (unrealistic) that's less than I am alone using in 5 months (330 kWh/m * 5m = 1650 kWh). I would need 3 lightnings per day without loses just to cover mine own needs.
  14. In that SpreadSheet you shouldn't play with first column where is time. At least not until you will understand whole equation. You change initial quantity (C2) and half-life (B2) fields. Columns D,E will be filled automatically, and graph updated. For f.e. half-life 10 seconds, and initial quantity 1000, you will see 1000,933,870,812,etc. going down quickly.
  15. Chlorine-37 based neutrino detector is triggered by neutrinos that have >0.814 MeV energy. Which means neutrinos produced by decay of Beryllium-7 (these have up to 0.862 MeV), or decay of Boron-8 (these have up to 17 MeV). If neutrino have less energy, detector is not triggered. It doesn't mean that neutrino was not emitted. It could be emitted but remained unnoticed. Purdue University even patented their method in the US: http://www.google.com/patents/US8642960
  16. We need to multiply measured mass of galaxy by ~500% (and call it dark matter) to match Newtons & General Relativity predictions. http://en.wikipedia.org/wiki/Dark_matter "Although the existence of dark matter is generally accepted by the mainstream scientific community, some alternative theories of gravity have been proposed, such as MOND and TeVeS, which try to account for the anomalous observations without requiring additional matter." You should also read this article http://en.wikipedia.org/wiki/Galaxy_rotation_curve
  17. I have explained half-life calculation in this thread http://www.scienceforums.net/topic/83245-a-question-on-radioactive-decay/?p=806204 You can simply use that Spread Sheet with your data. current=start*2^(-time) will give the same result as: current=start*e*(-time*ln(2))
  18. The question is whether we would recognize it as a (yet to be decoded) language. For some signal types it's very easy. For instance, put tiger to monkey's cage, and record sound they will be screaming. (Or record it in real wild world) That's sound of "danger", "tiger", "run away", "enemy". Recorded sound can be later used on different group of monkeys (same kind), or same group at different time (couple days, months, years later), to see whether they treat it the same way. That reminds me Myth Busters that tried to see whether duck quack has echo. They took single duck, but he/she didn't wanted to quack It took them some time to figure out they need two or more ducks. Apparently single duck didn't want to talk to himself/herself.. What a surprise.. See this video:
  19. That's problem with depressed persons - bother about things that are meaningless for healthy persons.
  20. What on Earth has quantity of possible ways of mixing words, with somebody happiness? Your problem is depression, not quantity of possible ways of mixing elementary particles, words, or letters. Do you tried taking medicine with Hypericum perforatum? http://en.wikipedia.org/wiki/Hypericum_perforatum That's correct. Book with finite number of pages, with finite size of font, will have finite quantity of ways words can be arranged. Infinite quantity of stars, infinite quantity of galaxies would lead to no Universe that we know. Read about Olbers' paradox http://en.wikipedia.org/wiki/Olbers%27_paradox Although it's not reason to feel depression.
  21. Do you know how neutrino detector is working? Perfectly stable Chlorine-37 is hit by neutrino that must have >0.814 MeV and it's changing to Argon-37, which is unstable element and decays back to... Chlorine-37 by electron capture. Argon-37 has half-life ~35 days. Cl-37 + Ve + 0.814 MeV -> Ar-37 + e- Ar-37 + e- -> Cl-37 + Ve + 0.814 MeV Detector can observe flashes leaved by decaying Argon, or count argon gas molecules. Chlorine based detector is working exclusively with neutrinos that exceed 0.814 MeV (which is quite a lot for Sun fusion f.e. p+ + p+ fusion is producing just 0.42 MeV). If Argon-37 wouldn't be decaying, or have half-life significantly longer, this reaction could remain completely unnoticed. I am working on application that will automatically analyze the all 3143 isotopes and show me all possible materials that could be used as neutrino detectors.
  22. That's exactly what I was talking about. You couldn't not have it at primary school physics.. http://en.wikipedia.org/wiki/Inverse-square_law http://en.wikipedia.org/wiki/Intensity_%28physics%29
  23. They don't have to match.. Horizontal axis is time. Vertical axis is distance from us in c unit (1=~300,000 km) I think so. It's purely theoretical. Imagine that mirror is approaching at v=2c. We have laser and sending beam of photons at that mirror. Mirror is reflecting laser to us and we measure delay between sending, and receiving. After 33-34 second that red line should be going back to bottom. I was just interested in intersection time.
  24. Isn't sound obeying inverse square law?
  25. The all good programmers that I met, know how to program computers a long time before going to university (if they ever went to... studying is learning how to learn.. if you learned already why to waste time for paper.. ? IT companies here are more likely hiring programmer that learned programming by himself, than those after university.. Most of job offers are with comment "no study required, you will write application in test day") Buy some books about C/C++, .NET Framework, install free Visual Studio Express from MSDN, and write programs. Instead of searching for some ready application on net, make it by yourself. You will see whether it's for you or not.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.