-
Posts
7943 -
Joined
-
Last visited
-
Days Won
26
Content Type
Profiles
Forums
Events
Everything posted by Sensei
-
E=mc^2 simply informs how to convert from mass units (e.g. kg or eV/c^2) to energy units (e.g. J or eV).. In normalized units (where c=1) you simply have E=m.
-
...maybe he meant that somebody ("director") "pressing button" which is turning on/off electricity which passes or not through dead frog leg has control over dead frog.. Electricity is just "messenger" of will of "director".
-
Competitive Eaters
Sensei replied to Carl Fredrik Ahl's topic in Anatomy, Physiology and Neuroscience
IMHO silly challenge. https://en.wikipedia.org/wiki/Competitive_eating "Training and preparation Many professional competitive eaters undergo rigorous personal training in order to increase their stomach capacity and eating speed with various foods. Stomach elasticity is usually considered the key to eating success, and competitors commonly train by drinking large amounts of water over a short time to stretch out the stomach. Others combine the consumption of water with large quantities of low calorie foods such as vegetables or salads. Some eaters chew large amounts of gum in order to build jaw strength.[8] For a marquee event like the Nathan's Hot Dog Eating Contest, some eaters, like current contest champion Joey Chestnut, will begin training several months before the event with personal time trials using the contest food.[9] Retired competitive eater Ed "Cookie" Jarvis trained by consuming entire heads of boiled cabbage followed by drinking up to two gallons of water every day for two weeks before a contest.[10] Due to the risks involved with training alone or without emergency medical supervision, the IFOCE actively discourages training of any sort.[11]" -
If it's 2.4 GHz it'll heat water molecules. It's frequency used by microwave ovens.. Check this website and search for "GHz" to learn more about frequencies used by this device.
-
He meant particle zoo discovery in XX century.. https://en.wikipedia.org/wiki/Particle_zoo Attempt of unification of "particle zoo" mentioned above is Standard Model. If photon is flying through medium, it can be absorbed by e.g. electron, after collision electron is in excited state. Then, if second photon, with the right energy/frequency/wavelength, collide with excited particle in the medium, it'll be excited more to even higher energy level, which can result in creation of the more energetic photons at the end, or photons with different properties than they used to have during entering medium.. For outside observer, it's quite like photon-photon interaction, while in the reality it's multiple photon-electron or photon-particle interactions.
-
Maybe you meant lookup table? Result of precomputation. The most famous lookup table is multiplication table. The result of usage of multiplication operator. Lookup table is limited by number of columns and/or rows and available memory. Argument to dynamic operator can exceed number of columns and/or rows of fixed lookup table.
-
There is no direct revenue, but there is increase of value of company owning interesting patents. And that added value can be used during negotiations with e.g. banks giving loans or private investors.
-
Maybe when Saa is talking about"copyright" actually means "intellectual property" i.e. patent protected descriptions of how to produce some thing. Companies rely on patents extensively. They create new one, buy and collect existing, buy licenses for existing patents, buy other companies to acquire access to owned by them patents etc. etc. Companies copyright their logo, their trademarks, to disallow somebody using them and pretending them. Saa, copyright is for e.g. musicians, graphicians, painters, book writers, artists, etc. etc. Patents law is for inventors of useful innovative product, or way existing product can be created e.g. process of production of chemical compound novelty way. Saa, your arbitrary way of splitting income does not make sense. Each industry requires completely different amounts of money for production of thing company is selling to people or other companies. It's up to patent owner and company that received license for production how they will arrange their cooperation, and how they split their income. License owner can demand fixed amount per unit, percentage per unit, percentage from income (after reduction of cost production). That's result of negotiations between parties involved and usually secret.
-
How can I contribute to Physics with a different major?
Sensei replied to pmourad's topic in Classical Physics
You could e.g. make 2D or 3D animation of cosmic ray particles hitting atmosphere of the Earth, creation of secondary cosmic rays, how they decay, to couple different modes. In some modes, there are created free neutrons, which after hitting Nitrogen N-14 atom is transforming it to radioactive Carbon C-14. Then it becomes part of carbon dioxide molecule, which is absorbed by plants, and end ups in other living organisms, including humans, consumed directly (plants) or indirectly (meat). They decays inside of body damaging DNA, cell or organelle.. -
Is science everything or is there more to life than science?
Sensei replied to seriously disabled's topic in The Lounge
Response of @swansont was not hostile in any word he said.... I would just remove this "Stamp collecting" remembering your past posts.. but it requires knowing and remembering your state of mind.. knowing that you're at serious depression.. members of this forum don't have to remember who you are, and in what mood you are, writing message.. and most don't.. He is at serious depression.. ...in such state, his brain is interpreting pretty harmless for normal people responses as hostile.. ..in such state, jokes about him, or sarcasms, his brain would interpret as extremely hostile.. and so on, so on.. -
..that sounds to me as Catmull-Rom spline.. https://en.wikipedia.org/wiki/Catmull-Rom_spline https://en.wikipedia.org/wiki/Centripetal_Catmull–Rom_spline Imagine we have two points instead of three. How to make equation which will approach 2nd point from 1st point? You need to have "time" parameter which goes from 0...1 The closer it is to 0, the more influence of 1st point and less 2nd point. The closer it is to 1, the more influence of 2nd point and less 1nd point. You end up with interpolation function i.e. x' = x0 * ( 1 - t ) + x1 * t y' = y0 * ( 1 - t ) + y1 * t After extending it to three or more points, you end up with something like Catmull-Rom spline. I think so it can be recursive: find middle point between 1st point and 2nd (x'=(x0+x1)/2,y'=(y0+y1)/2).. then add influence coming from 3rd point (whatever you like weight, when weight = 0 spline will be straight lines). Then repeat it i.e. treat newly created "middle" point as input to function calculating middle point. It would be easier for you to work it out inside of computer program which would generate 2d image in the real time.
-
He mistakenly made equality of Internet and WWW. For layman they can be synonyms though. https://en.wikipedia.org/wiki/Tim_Berners-Lee Tim Berners-Lee worked at CERN and made the first ever HTTP server. "info.cern.ch was the address of the world's first-ever website and web server, running on a NeXT computer at CERN. The first webpage address was http://info.cern.ch/hypertext/WWW/TheProject.html, which centred on information regarding the WWW project. Visitors could learn more about hypertext, technical details for creating their own webpage, and even an explanation on how to search the Web for information. There are no screenshots of this original page and, in any case, changes were made daily to the information available on the page as the WWW project developed. You may find a later copy (1992) on the World Wide Web Consortium website.[37]"
-
Plastic is made of oil (and can be made of gas, or organic remains, or GMO microbes (they just have to expel ethylene) ). D.T. is supporter of oil industry. Somebody banning production, import and usage of plastic, would be the worsthest enemy of oil industry.. I don't think so banning plastics is a good idea. People would cut the all trees instead, creating different kinds of problems.
-
https://en.wikipedia.org/wiki/Regulation_of_gene_expression "Regulation of gene expression, or gene regulation,[1] includes a wide range of mechanisms that are used by cells to increase or decrease the production of specific gene products (protein or RNA). Sophisticated programs of gene expression are widely observed in biology, for example to trigger developmental pathways, respond to environmental stimuli, or adapt to new food sources. Virtually any step of gene expression can be modulated, from transcriptional initiation, to RNA processing, and to the post-translational modification of a protein. Often, one gene regulator controls another, and so on, in a gene regulatory network." Gene expression can be compared to computer programming if-then-else statement (conditional execution of sub-program). https://en.wikipedia.org/wiki/Three_prime_untranslated_region "Several regions of the mRNA molecule are not translated into protein including the 5' cap, 5' untranslated region, 3' untranslated region, and the poly(A) tail. The 3'-UTR often contains regulatory regions that post-transcriptionally influence gene expression. " It can be compared to computer programming for-loop or while-loop, which have sub-routine executed as many times as needed due to external stimuli, and additional parameters to sub-program. "These diverse mechanisms of gene regulation ensure that the correct genes are expressed in the correct cells at the appropriate times. " Like execution of sub-program with delay in computer programming, if criterion of if-statement is meet. They execute program. If criterion A is meet do this. If criterion B is meet do that. If criterion C is meet do something else..
-
Pill are designed to slowly release drug. https://en.wikipedia.org/wiki/Modified-release_dosage e.g. "A floating system is a system where it floats on gastric fluids due to low-density. The density of the gastric fluids is about 1 g/mL; thus, the drug/tablet administered must have a smaller density. The buoyancy will allow the system to float to the top of the stomach and release at a slower rate without worry of excreting it. This system requires there are enough gastric fluids present as well as food.[4] Many types of forms of drugs use this method such as powders, capsules, and tablets.[19]" They are designed to be ingested. Covered by a layer which is dissolved by the stomach.
-
Is it possible for lightning to...
Sensei replied to DARK0717's topic in Modern and Theoretical Physics
... the better is to not have enemies.. and not make any enemies... -
Full Immersion virtual reality is real?
Sensei replied to Kayako's topic in Anatomy, Physiology and Neuroscience
If you will learn how brain works you could send picture from camera and microphone audio data directly to the brain of deaf and/or blind person, bypassing damaged organic eyes and/or ears.. So, it has not only usage as entertainment toy, but also as medical device. ..and even more mis-usage in surveillance and counter-spy agencies (caught spy, terrorist or criminalist, by counter-spy agency agents, will reveal everything, if he/she thinks what he/she sees and hears is the real world, but it's just virtual world made to get the all information he/she knows).. -
Do you know inverse square law?
-
Artificial Intelligence (automatic) computer software translator i.e. Google translator versus human translator.. ?
-
Forum Rule about disproving mainstream science
Sensei replied to Silvestru's topic in Suggestions, Comments and Support
The way it is now, is good, IMHO, it's even too tight (there should be given more time for speculators to take a lesson about science). The one who wants to participate in thread, engage in thread, discuss with OP, and try to teach and explain science to layman pet-theory author. Some of them will take a lesson, some other will not. You do not have control over it. -
...I used fixed by me (traditional) light bulbs for months..