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Everything posted by Sensei
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It's easily verifiable by comparison of DNA chains of two or more species whether they have common ancestor. If somebody is rejecting humans evolution from apes, should not such person also reject DNA paternity test? Reject recognition of found unknown dead body using DNA tests? Reject recognition of criminals using DNA tests? GMO? And so on, so on.. In the Bible "Adam" is created not from nothing, but from "clay".. It's such analogy of transformation of inorganic matter to organic matter, expressed by scientific layman..
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"Chemistry is applied physics".. Oxygen bonds are broken while breathing.. or burning fuel...
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Movie makers, game makers, music makers, theater spectacle makers, book writers etc. etc. want to create emotion in viewers, listeners, readers or players. Art is evolving with time. What was common in early cinema ages (pantomime, musicals, romances) are no longer interesting and enjoyable for majority of western population. Viewers would say these e.g. movies are naive, stupid, barely watchable etc. It's easy to make horror movie with cruelty which will cause viewers emotional reactions.. but it's very hard to make comedy which will cause the same level of emotional reactions. Good comedy requires extraordinary intelligence from either movie maker and movie viewer.
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No. You were absolute clear. You want to learn. Welcome and good luck. Try Wikipedia first, Khan Academy or reread your old school books. If/when you will have questions about something in them, feel free to ask question here on physics and/or chemistry section of the forum.
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You can fuse (or split) atoms even using Van de Graaff generator, but it is in really just a few reactions happening there. i.e. it takes a lot of energy to start up, but releases fraction of energy.. i.e. it's not self-sustainable and capable for fusion power plant.. ps. It belongs to quantum physics, rather than chemistry..
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...bad teachers are disease of educational system... they don't teach subject.. but teach to hate/dislike knowledge.. teach to hate/dislike schools.. Unlikely..
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Did you look at Wikipedia? https://en.wikipedia.org/wiki/Henry's_law
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Yes it was, he called me a climate change supporter …. ...I am quite confused.... since when calling somebody "climate change supporter" is "personal attack"... ? Do you find it offensive.. ? ps. By "climate change supporter" obviously I mean somebody who is accepting and understanding man-made global warming problem..
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Cutting trees for space for agricultural mass production of food was devastation of natural environment. Burning coal, oil and gas is completely different ("skyrocket") level of devastation of natural environment.
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If it is the real work, not mathematical play, I would simply boolean one object from other object to get intersecting polygons, and use area calculation tool in 3D application on remaining polygons (eventually triangulate it). You might need to temporarily extend 2D shape to 3D because some boolean tools don't like to work in 2D (depending on application that you're using).
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How many planets in this solar system are inside of habitable zone? https://en.wikipedia.org/wiki/Circumstellar_habitable_zone
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You can build custom incubator for e.g. eggs, with controlled temperature, using up-side-down placed aquarium. To heat air, you can use water heater (cost $3-4) like this one: Don't plug it directly to AC, but through adjustable voltage regular like this one: Place inside also digital thermometer, and quiet fan (from old computer), which will be mixing air all the time. Adjust voltage until receiving appropriate temperature for eggs or whatever you are incubating inside. ..or use thermostat (I have this model, costed $2.6) *) aquarium is big enough to hold the all elements, and have transparent glass, so you will be able to see what is happening inside during experiment.
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That's the way to save forests.. not to mention ability to search keyword in such document.
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Sorry, if I sounded too harsh in my previous reply.. you know.. there is Saturday night.. (8th beer etc. etc.)
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I appreciate your fascination..
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That's interesting thought for mind. Suppose so we have photon traveling in space and it meets virtual-pair, at the same time, other photon is meeting counter-anti-particle of the same virtual-pair. Photons loses energy in the presence of virtual-pair the same (or not) amount. And virtual-pair disappears later. While photons still exist and travel through the space, the more such interactions happens on their path through space and time, the lower and lower and lower energies they have..
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eV, electron-Volt, is unit of energy. Volt is also not unit of charge. Charge is Q in Coulombs... So, you basically have no knowledge about physics, regardless of your nickname.. To simplify it to you, if you fire a bunch of particles, electric neutral particles, electric +1e charged partices and electric -1e charged particles in region where you have external electric field (created by existence of polarized electrodes). These particles will have bended trajectories of their traces, accordingly to their charges. That's how CERN, or other particle detector works.
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International Journal of Physics Research and Applications (JPRA)
Sensei replied to studiot's topic in The Lounge
"Promotion" means (at least to me) "advertisement". Better word would be "acceptance" IMHO. According to: https://www.scitechnol.com/instructionsforauthors-journal-physics-research-applications.php "Article Publication Charges: Publishing under Open Access mode involves a publication fee of US $919." ..and so what.. ? -
Checking Your TV Remote Controller Using A Smart Phone's Camera
Sensei replied to Sirjon's topic in Experiments
You just need to attach Bluetooth tag to your keys (5 usd), and then you can use computer or smartphone to locate it. https://www.ebay.com/bhp/key-finder It could be reversed. Write app for Android which will start alert if smartphone is too far from Bluetooth tag like >= 10 m. And nobody will stole your smartphone so easily. -
This this calculator: http://www.giangrandi.ch/soft/spiral/spiral.shtml (searched net for "length of piece of paper rolled") ps. You need also tape thickness parameter..
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If there is created Uranium 238, there must be created trace of Plutonium 238, because one of rare decay modes of Uranium 238 is via double beta decay minus. Isotope Uranium-238 Protons 92 Neutrons 146 Mass 238.051 [u] Uranium-238 -> Thorium-234 + alpha + 4.26992 MeV Uranium-238 -> Plutonium-238 + e- + e- + Ve + Ve + 1.14415 MeV
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They do evaporate. At the moment with slow rate. When the Sun will turn to red giant at the end of its life, outer gaseous giant planets will receive much more energy per surface area than they receive now, and evaporation will accelerate. Solid inner planets will also evaporate, much quicker and much more violently. It is just a matter of time.
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Can photons excite electrons in the inner shells?
Sensei replied to StringJunky's topic in Modern and Theoretical Physics
Yes, absolutely. If inner shell electron is ejected, one of outer shell electrons can emit photon and replace it. Then ejected electron might emit photon again, and replace older outer electron space. It was showed in x-ray photon interactions video: Gamma photon with enough energy can disintegrate nucleus, in the process called photodisintegration. https://en.wikipedia.org/wiki/Photodisintegration -
List of tornadoes, storms and hurricanes in U.S. for review: https://en.wikipedia.org/wiki/List_of_North_American_tornadoes_and_tornado_outbreaks The less fatalities do not mean, they were weaker, just that they passed through smaller villages rather than bigger cities (and people were better prepared)..
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The level of damage made to cities is not strictly correlated to strengths and quantities of tornadoes, storms or hurricanes. They can go through sparsely populated area, while their strengths might be extreme. Your conclusions? They had to be weak storms because small damage in $$$.. !