We are nearly finishing posts for fundamental forces. First I would like to apologize that I forgot to mention that force carrier for Electromagnetism is photon.
So weak interaction is pretty weak but still insanely stronger than gravitation. It works with quarks and their flavors and it is responsible for decay.
Here on left is picture of all six possible flavors of quarks. (There can also be antiflavors). Most of matter in universe is made up by up and down quarks. For example neutrons and protons.
Force carrier for weak interaction is w+ boson w- boson or z0 boson.
I was talking about decay so I will show you how beta decay is made by weak interaction.
There is proton with two up quarks and one down quark. It wants to change to neutron because that particle in which this proton is is not stable.
When proton touches neutrino which is carrying w+ boson, boson will move to proton and change one up quark to down quark which makes up neutron. Neutrino will lose positive charge of boson which means it will turn to electron which makes up beta decay!
For summary I would say that weak interaction is responsible for changing of quarks flavor which is many atributes of quarks.
Well that was quite short but that is probably all.
PS. here are links to previous episodes of four fundamental forces:
Gravity or gravitation is one of four fundamental forces in the universe. It is also the weakest one as I said in the last post. Unlike other forces it works on much bigger distances. And it only pushes things together.
Imagine having a planet like Earth. It has poles. South pole and north pole. We can see that Earth gravity is pretty strong, it holds us here. So if electromagnetic force is 10^40(something like that) stronger, shouldn´t be electromagnetic field of earth insanely strong? No because electromagnetism works with +(plus) and -(minus) and they will cancel out (almost). Strong and weak interaction are working only on short distances so when you are forming galaxy or star you will work only with gravity.
There are two ways of imagining gravity. (Actually there are more but those are basic)
1) Newton´s way
It says something like this: Every particle in universe attracts all other particles in universe by force which is higher when mass of particles is bigger and is lower when particles are far away each other. Its equation is F=G*(m1*m2)/r
F is force of gravity
G is gravity constant (you can find it on wikipedia)
m1,m2 are masses of your objects
r is distance of objects
Spacetime is bended by all particles with mass. And it works with all particles even those which are massless, like photons.
Newton´s way does not actually explain some things like orbital of Mars (so it is kind of broken).
On the left is picture of spacetime. You can also imagine your bed which is probably very soft and when you push your matress it goes down. At that point your fist is actually kind of planet, star or black hole and it atracts other stuff around. If you take a ball lay it next to your hand it will go down to center of that hole you created.
I have found awesome video on gravity so here is link: https://www.youtube.com/watch?v=MTY1Kje0yLg
You will see that all forces have some force carrier. Gravitational carrier is massless particle called graviton. It is theoretical, which means it was not detected. Scientists even think that it cannot be detected, but we can see what it does: Gravity!
Thanks for your follows,
Hi again, for fourth time!
I am subscribing some science channels on youtube. SciShow, VSauce, MinutePhysics or Veritasium. They are all awesome and I would like to recommend them to you. Plus I would like to thank to them because I learned a lot of stuff from them.
Anyway, few weeks ago I watched serie from SciShow. There were videos about fundamental forces. Because I would like to write about what i learned on this blog it inspired me to do something similar and try to explain what are those fundamental forces.
This post will only be about what are they together and then I want to talk about them one by one.
So there are four fundamental forces. You could also say basic forces. They have some similarities and all of them have force carriers.
First one is gravitation. It is probably the most strangest one. Gravitation is strange because it only pulls things together. Gravitation is atribute of every particle with mass. It is also crazy weak. Electromagnetic pull between two particles with different charge is 10^42 stronger than gravitation between two particles!
Next one is electromagnetism. It occurs between two objects with some charge. On the beginning of 19th century electromagnetism was created by putting together electric force and magnetic force.
Another is weak interaction. It is (for me) far more complicated i think. It affects very small stuff like quarks. It is also responsible for beta decay. Its carrier is photon.
Last one, also very complicated is strong interaction. Strong interaction is very strong. It is that strong that it can create new massive particles! Again it works on small scale and its force carrier is gluon.
Well that was short overview for fundamental forces. I will talk about them later, one by one.
Thank you for your likes and comments, as I said before, I really appreciate them!
PS. something about radioactive decay is coming!