What is gravity?;
This question has bothered many physicists over the centuries. In physics classes, we were told of an apple falling from the apple tree helping Newton formulate the law of universal gravitation, and of the great Einstein, who described gravity in the general theory of relativity. It is undeniable that every object with mass is brought toward another object with mass. Why this is happening is another matter. In today's article, however, I will focus on why gravity as one of the four fundamental forces doesn't allow us to say that we have one theory that describes the whole reality - the theory of everything.
Czym jest grawitacja?;
Pytanie to nurtowało wielu fizyków na przestrzeni wieków. Na lekcjach fizyki opowiadano nam o jabłku, które spadając z jabłonki miało pomóc Newtonowi w sformułowaniu prawa powszechnego ciążenia oraz o wielkim Einsteinie, który w ogólnej teorii względności opisał czym według niego jest grawitacja. Niezaprzeczalne jest, że wszystko co ma masę przyciąga się. Dlaczego tak się dzieje to jednak inna sprawa. W dzisiejszym artykule jednak skupię się, dlaczego grawitacja jako jedno z czterech podstawowych oddziaływań nie pozwala nam mówić, że mamy jedną teorię opisującą całą rzeczywistość - teorię wszystkiego.
Standard model;
The standard model is one of the most successful physical theories. It perfectly describes what the material is built of, and it also describes the media of three of the four basic forces - bosons. But it does not explain why there is gravity at the quantum level. In fact, it is the only one missing force in the description of matter and interactions - it is a missing piece of the theory of everything.
Gravity is very weak...;
Gravity is by far the weakest force. Numbers describe perfectly how weak it is: if we assume that the gravitational interaction has power 1, the strong force has the power 100000000000000000000000000000000000000000.
Quantum gravity;
According to quantum field theory, each elementary particle has its field, which if there is enough energy in one place it generates material particles. Some fields, such as the Higgs field interact with other elementary particles, in this case giving them a mass. Some scientists have assumed that there is a gravitational field whose representative would be a graviton particle with the following properties:
- mass = 0
- charge = 0
- spin = 2
Will we be able to observe graviton?;
As I have said before, the force of gravity is incredibly weak. It is therefore very unlikely that we will be able to observe gravitation with particle colliders. But maybe we will be able to find another method for observing particles...
Model standardowy;
Model standardowy jest jedną z najbardziej udanych teorii fizycznych. Doskonale opisuje z czego zbudowana jest materia, opisuje również nośniki trzech z czterech podstawowych oddziaływań, czyli bozony. Nie tłumaczy on jednak, dlaczego istnieje grawitacja na poziomie kwantowym. W zasadzie tylko tego nam brakuje w opisie materii i oddziaływań - jest to brakująca cegiełka do stworzenia teorii wszystkiego.
Grawitacja jest bardzo słaba...;
Grawitacja jest zdecydowanie najsłabszym oddziaływaniem. Dobrze ukazują to liczby: jeśli przyjmiemy, że oddziaływanie grawitacyjne ma moc 1, to oddziaływanie silne ma moc 100000000000000000000000000000000000000000
Kwantowa grawitacja;
Zgodnie z kwantową teorią pól, każda cząstka elementarna posiada swoje pole, które jest w stanie po zgromadzeniu wystarczającej energii w jednym miejscu wygenerować materialne cząstki. Niektóre pola, jak np. pole Higgsa oddziałuje z innymi cząstkami elementarnymi, w tym przypadku nadając im masę. Część naukowców założyła więc, że istnieje pole grawitacyjne, którego reprezentantem miałaby być cząstka grawiton o następujących właściwościach:
- masa = 0
- ładunek = 0
- spin = 2
Czy uda nam się zaobserwować grawiton?;
Jak wcześniej przedstawiłem, siła grawitacji jest niesamowicie słaba. Jest więc bardzo mało prawdopodobne, że uda nam się zaobserwować grawiton za pomocą zderzaczy cząstek. Może jednak uda nam się znaleźć inną metodę na obserwacje cząstek...
Dobry post. Gdyby tak sie udało naprawde oszukać grawitacje :D ciekawe jakie by to skutki miało
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Niestety byłyby to skutki katastrofalne, cały wszechświat opiera się na grawitacji w takiej postaci jakiej jest obecnie.
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How one object "knows" that another object is near? I know it is because they exchange virtual particles, but this doesn't explain the whole mystery.
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Sometimes sense of smell is enough to detect those particles :-)
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If particle accelerators like CERN are able to shoot the particles at much higher energies it may be possible to observe Gravitons!
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Yeah, sure, but at the moment we don't have accelerators that can accelerate particles to enough speed and we won't have them in near future, but who knows, maybe CERN will build one in a future...
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Temat dobry, chętnie o nim czytam. Często zastanawiam się nad pytaniem: po co nam teoria wszystkiego? :)
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Ciekawe pytanie, wydaje się, że samo szukanie teorii wszystkiego jest dobre dla rozwoju świata, jako skutek uboczny tych poszukiwań istnieje dziś np. sieć WWW. Lecz co nam może dać odkrycie teorii wszystkiego? Jest wiele dziedzin, które mogą na tym skorzystać, np. ekonomia za sprawą ekonofizyki. Chyba zrobię o tym krótki wpis. Dzięki za pomysł.
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Bardzo ciekawy artykuł, nie wiem co więcej napisąc bo jest 3:39 morfeusz zaprasza mnie do swego świata.
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gravity theory Is a freemason lie.
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I am Groot! :D
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Gravity is still an unproven theory. Even top scientists can't explain how it works. Buoyancy and density explain our reality perfectly fine.
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What do you mean by "gravity is still an unproven theory"?
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Gravity is a theory still to this day, not a scientific fact. It is used selectively by scientists to fit their agenda. How does gravity hold 71% of our earth (water) to a spinning rock flying through space yet a bird can fly freely at ease?
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71% of earth mass according to widespread although apparently unproven belief appears to be much heavier than a bird and to the best of my knowledge water doesn't have wings so it can't fly freely at ease. So probability calculations leads to the conclusion that flying birds are much more likely to occur in nature than flying water.
I do believe that birds fly because they have never heard about Theory of Gravity while humans do not fly because they are gullible and tend to believe in many unproven theories.
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Gravity is not a theory. You might be talking about GTR, but it is well proven theory in macro scale and you are talking about macro scale. The problem is in micro scale, how particles experience gravity there.
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Your theory that gravity is not a theory is just not very well founded theoretical assumption :-)
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Gravity is a theory...an apple falling doesn't prove gravity lol. So on a big scale gravity works but on the small scale it doesn't? This is my point, it's only suitable to say gravity exists in one instance then ignore all other natural phenomenons that wouldn't work according to your own belief on how gravity acts upon things.
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"Gravity is a theory" - you say that gravity is a well-substantiated, well-supported, well-documented explanation for our observations. That is the meaning of word 'theory' in science. I didn't say that gravity doesn't work on the small scale - of course it works. I told you that GTR doesn't work well when we achive quantum level, because this theory is used to explain macro scale events and it perfectly explain every observation on macro scale.
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Czytam te dziwne teorie z brakiem grawitacji od ludzi... W takim razie w próżni co wypływa na przyciąganie przedmiotów?
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Próżni też zapewne nie ma więc problem który przedstawiłeś jest sztuczny :-)
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Zapomniałem, że żyjemy wewnątrz kuli...
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Dokładnie próżni nie ma, zawsze jest coś, pozdro all :)
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Dobre pytanie...
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This post received a 2.5% upvote from @randowhale thanks to @jakipatryk! For more information, click here!
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Congratulations! This post has been upvoted from the communal account, @minnowsupport, by jakipatryk from the Minnow Support Project. It's a witness project run by aggroed, ausbitbank, teamsteem, theprophet0, and someguy123. The goal is to help Steemit grow by supporting Minnows and creating a social network. Please find us in the Peace, Abundance, and Liberty Network (PALnet) Discord Channel. It's a completely public and open space to all members of the Steemit community who voluntarily choose to be there.
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nice broo
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Dobra robota, Wielkie DZ, pozdro all :)
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Do you imply that there'll be time when we do? I don't think so.
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I meant that we don't have full knowledge of the building blocks of universe, using which we would be able to build anything. You are right - having full knowledge of the universe won't be possible unless we build a simulation of whole universe. There is one big problem - we would need a whole universe energy, thus we will never have full knowledge of the universe.
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good one
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