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Everything posted by Sensei
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Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
Apparently they are filling automagically... -
Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
...trashcans are full of food these days... https://en.wikipedia.org/wiki/Freeganism ps. I sold today 3 kg of Aluminium beer cans to scrapyard and bought 0.5 kg of turkey for schnitzel. 3 kg Al is enough for buying 1.1 kg of turkey meat here. ...just be happy you exist... at the moment.. -
....so treating "black Americans"/"Afro-Americans" like equal to white man.. is result of USSR secret spies Marxist-Leninist propaganda.... ? Astonishing thought... Going your way of thinking Jesus is also "Marxist-Leninist spy", when I said "love your neighbor as yourself"..
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...any true examples of such propaganda in the Western medias.. ? e.g. links to articles supporting your hypothesis/conjecture..
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That's nothing unusual.. e.g. if spy is gaining high rank at some administration he/she can order subordinate officers to do something which is actually not for government they think they are working for, but for government, the spy is working for. Higher rank officer ("spy") takes results of their job, and sends to his/her true gov, without revealing task and results to gov.. Officers are thinking they did job for their country, while they did job for foreign country.. ...I love to talk with such spies.. it's kinda hilarious..
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...unless future new technology will repair eventual damage...
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Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
..there is needed just a drop by drop of water to fill, and then overflow, cup of glass... and time.. ..to have pretty constant population at current ~7.6 billions of people, ~300 thousands of just newly born today babies, would have to fly in the rockets, and never come back.. ..you forgot the most important - don't waste food... Western countries people are wasting an awful amount of food.. https://www.theguardian.com/global-development/2018/aug/20/food-waste-alarming-rise-will-see-66-tonnes-thrown-away-every-second ...that requires buying in advance less than you actually need to eat.. and consume the everything what you bought.. ps. I am doing so.. simply because I don't have (working) refrigerator.. and every day visiting at least two-three shops buying fresh new food just for today. -
Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
It's already done, just not popular. https://en.wikipedia.org/wiki/Cultured_meat -
That is simple. Water is polar molecule. i.e. one side of molecule has more positive charge (H+), while other side of molecule has the more negative charge (O2-) https://en.wikipedia.org/wiki/Chemical_polarity (you have picture of water molecule and model of charge distribution in the above article)
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Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
On the other hand, mass-production of fruit trees require killing of the bugs, fungus and other microorganisms which are attacking trees and fruits. Fruitarians are missing this information. -
Living without sacrificing others (food).
Sensei replied to merinoa's topic in Biochemistry and Molecular Biology
Yes, there are. e.g. animals eating just fruits. 100% Fruitarianism is not really healthy diet for humans though, IMHO. Dairy products are yet another example of diet which does not require killing animals (but e.g. cows still eat plants). On overpopulated planet, artificial meat and GMO microorganisms producing nutrient compounds will be the only solution. In Japan density of population right now is so high like the planet will have at 50 billions of people. And at this moment, they are producing just ~30% of food they consume. The whole rest is imported from foreign countries. If entire world will have 50 billions of people, Japan won't be able to buy missing 70% of food. Everybody will be in their current position with shortage of food. Prices of food, water, will "skyrocket".. Lands on which you can grow plants will be "priceless".. Artificial meat and GMO microorganisms producing food will just delay inevitable collapse.. -
How do you find that math problem that is worth working on?
Sensei replied to Trurl's topic in Mathematics
Brute-force method, easy to program, is a good way of verification of whether some equation is giving good results. Good luck in searching e.g. the biggest Mersenne Prime without computer farm.. -
How do you find that math problem that is worth working on?
Sensei replied to Trurl's topic in Mathematics
...during writing computer programs and algorithms.. Do you want my recent inspiration ...? Suppose so we have function taking string as input parameter. It suppose to calculate quantity of the all possible combinations excluding repetitions.. Imagine example input word "ab". It can have only two outputs "ab" and "ba". It's simple n! so far.. Imagine example input word "abc". It can have outputs: "abc", "bac", "acb", "bca", "cab", "cba". Again it's simple n! so far.. But there are possible combinations after exclusion of one of the letter! So remove "a" and work with "bc", remove "b" and work with "ac", and remove "c" and work with just "ab". ...with 4th letters it's already too complex for me to bother to list the all possible outputs (at least in Friday night hmm.. Saturday morning.. ) Your job is to make equation (preferably non-recurring procedure) returning number of the all possible combinations excluding repetitions of n-th word input (to be able allocate enough size array for the whole dictionary and order computer threads to work with specific portion of words, each thread with their own portion of data from dictionary). -
Oxygen is oxidizer. Fuel is e.g. Hydrogen, Ethanol, Methanol, Benzene etc. etc. There are other alternative oxidizers possible instead of liquid Oxygen. Spaceship ejecting gas from engines could give similar effect like comet (it's ejecting Hydrogen, Oxygen and Water molecules.. comet is boiling in the close presence of the Sun). Jet plane trail is completely something else.. it is not direct result of work of engines.. engineless plane at high altitude, flying at high enough speed, like Space Shuttle will leave similar trail as ordinary jet plane.
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Our Ability to Produce Offspring in Teenage Years
Sensei replied to SerengetiLion's topic in The Lounge
In biology when some organism is able to have offspring is considered "adult".. it used to be this way in ancient times e.g. in ancient Rome you became "adult" at age 13-14, and could marry partner and could have your own child. In modern times human adult status has been artificially delayed from 13-14 to 18 years. The smarter and the more knowledgeable are parents the smarter can be their offspring, as long as parents are spending time with their children, spending time on teaching everything they know.. But knowledge of humankind is growing with time.. We have here two concurrent visions: less damaged DNA with not really smart and not really ready parents versus the more damaged DNA with the more ready, the more knowledgeable parents. Offspring of not too bright, not ready, too young parents won't be able to develop to full intellectual potential, because of limits of their parents.. -
Can Music hurt to health and brain ?
Sensei replied to hamidhrt's topic in Anatomy, Physiology and Neuroscience
Certain kinds of music and songs are depressive and someone already in depression, despondent (e.g. after recent lost) or with other mental problems, could commit suicide after listening such music for too long period of time. For example Chopin Funeral March: -
Annihilation of electron with positron yields (typically) two gamma photons: [math]e^- + e^+ \rightarrow \gamma + \gamma + 1.022 MeV[/math] Each gamma photon [math]\gamma[/math] has energy ~0.511 MeV = ~510998.928 eV These photons interact with matter (or antimatter) and being absorbed, scattered etc. etc. and split to large bunch of lower energy photons, so at the end you deal with x-rays, UV photons, visible photons, IR photons, then MW photons, in multi-million (and later multi-billion) quantity. Photons carry energy released during annihilation (in the case of electron-positron annihilation, not true for other types of annihilation though).
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Easily falsifiable statement.. e.g. Inuits, Indians, Aborigines are examples of people who adopted to environment without changing it much.. That's true in modern days. For millions of years of evolution, especially prior agricultural revolution, and settlement, it was not the case. There are possible cosmic-scale adaptations of environment by intelligent life forms (or artificial intelligence) like Dyson Sphere, or constellation of remotely controlled satellites-mirrors reflecting too high power of the star (to limit inevitable permanent global warming in the future when the Sun will start to transform to red giant).. You have to make such constellation of satellites or die (the Sun will vaporize planets and later capture a few the closest one and merge with them).
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..you should rather beg for not "pulling out of the plug".. I think...
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Game of life is working fine in 2D (+time).. https://en.wikipedia.org/wiki/Conway's_Game_of_Life https://en.wikipedia.org/wiki/Life_simulation_game
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Mathematical Formula to Determine Object Size at Various Distances
Sensei replied to chr2019's topic in Mathematics
In the case of in real-time VR game simulation, you place two 3D virtual cameras for left and right eye. If person's head is at P 3D vector, left camera is at P-EYE, and right camera is at P+EYE, with EYE being vector with ~3 cm magnitude, direction of vector depends on rotation of the head of player. Majority (if not the all) of currently existing VR headsets can't track human eye movement to change angles at which 3D cameras are pointing at. So focusing is implemented by movement of mouse controlled aim cursor. Game know what 3D object is under mouse cursor, and know what is distance to that object (from analyze of Z-buffer for instance), and can set up 3D camera angles accordingly to have focus on it. Or alternatively it always focus on what is directly in the center of rendered image. It won't work with prerendered static data, like 3D movie, though. Astronomers are doing it using liquid highly reflective metal such as Mercury. https://en.wikipedia.org/wiki/Liquid_mirror_telescope -
What was source of "Mercury"? Maybe you don't have Mercury.. ? if you used broken thermometer (or your seller), there are replacements for liquid metal instead of Mercury such as Galinstan https://en.wikipedia.org/wiki/Galinstan They are hard to distinguish. You need to check and compare properties. Galinstan video: Mercury video:
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Isn't the same but easier? (without conversion from integer to float, and float to integer) sqVal = arr[index] * arr[index]; The easiest would be to use debugger. Compile in debug mode, set break point, and start debugging with real-time observation of variables and arrays to check what values are read/written/calculated. Old-school way to debug is by printing variables to e.g. console. You will see what happens step-by-step.
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Caspar, Melchior and Balthasar "The Gospels in the New Testament do not give the names of the Magi (or even their number), but their traditional names are ascribed to a Greek manuscript from 500 AD translated into Latin and commonly accepted as the source of the names."
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Element Creating Machine/ Simplest Formula To Change The Universe
Sensei replied to GreatScott1's topic in Speculations
Unstable particles, unstable isotopes decay regardless of their electron-cloud. It's nucleus which is decaying. The one of a very few exceptions from it is electron-capture. Fully ionized nucleus cannot decay via electron-capture, as it has no electrons to capture..