The Standard Model of Particle Physics (5 of 15)

[Graham6762]

1.9 that is so fucking cold, that would instantly kill a person, all countries should use Kelvin

[simysimss]

love the video man

[chrispikeyp]

very interesting video thanks

[fundamentalscience]

Everytime I watch movie with Dr. Brian Cox saying about physics, my moggy comes and starts mewing.

[Mattsretiring]

I don't understand what is meant to be discovered by colliding protons.

If it is know that protons are made of elementary particles (UQ and DQ) what is likely to come out the other side of a collision, except these particles?

[ytmoog]

@Mattsretiring

If you give the protons a lot of kinetic energy by accelerating them close to the speed of light then when they collide you can create new particles from the energy in the collision.

So it is possible to create any particle at all as long as you have enough energy there.

[remoraid7]

If by collisions, we don't get more particles than we have originally smashed together, no matter how hard we smashed, we know that these particles are most probably fundamental or indivisible.. to give you an idea of the distances we are probing.. It's approximately 2.81794 x 10^-15 m.. Thats about 3 millionths of a billionth of a meter... That's cutting a meter into half about 47 times!

[remoraid7]

The idea of quantum physics is that matter is not continuous, but made of tiny discrete fundamental particles that are indivisible.. We cannot cut them into half using a knife because the 'sharpness' of the knife is limited and can never cut quarks or electrons into half.. The only way to break these particles apart so that we can see what is inside of them is to smash them together..

[jchino723]

the outer is the source not theinner just trust me. factor that in for everything and it all makes sense. think about it. think the universe like a hologram a human would look out and be blinded by the outer wall and the sun would help light things around us my girl is deaf and if i stand in front of the sun shhe cant see my lips so think the original light source as the darkness of space we need stars to see around us like a hologram we are blinded by the spotlight that created us

[Gyroglle]

2:05 : Twenty-seven kilometres of tunne... in circumference?

[BendableCard]

I'm making short comedy skit videos and am partial towards physics and math humor. I'm going around to popular physics/math videos promoting to try to find a crowd that can understand the jokes. If you have some time please check out my channel and the video subatomic particle party. Thanks for your time.

[pab7984]

Interesting. But, isn't the idea of "no size" an oxymoron? If Quarks exist then they have a size. If they are physically "there" then they can be cut in half, and those "pieces" also can be cut in half...and so one and so forth, forever. No?

[stevok777]

@pab7984 Photons exist, we can see light but light itself doesn't have mass. We can't cut photon packets in half. The idea is that quarks are as much a fundamental particle [that they can't be broken down] as photons/light is. You could be right however, who knows what the LHC will end up showing us

[elusiveone2007]

<3 this stuff

[pab7984]

I'm a lawyer, not a science person, but, If there is an infinity in both directions (big and small, or out and in?) then isn't there an infinite amount of particles to discover? The atom is made up of protons and neutrons, which are made of quarks, which are made of....??? Get my point? Then string theory says all matter and energy is made of tiny vibrating stings. But what are the stings made of? And what is what makes the strings made of? It's an infinity, right?

[simw7]

@pab7984 I guess quarks are just energy? idk and string theory those strings are like the DNA of the universe, the fundamental building blocks of the universe. so those strings are jus the smallest things imaginable cuz we'll never be able to see them, even with our most powerful microscopes that we have or we will ever have

[Anthonyk312]

@pab7984 Thats what the "quantum" in Quantum Physics means. There is NOT infinity in both directions, there is a limit to how small something can be. That limit is 10^-43 meters. Quarks, according to the standard model, HAVE NO SIZE!!! They CANNOT be made up of something else. That's why they are called fundamental particles. String theory is yet to be proven or even widely accepted by the majority of scientists.

[SuperMerlin100]

@pab7984 At smaller and smaller distance scales momentum become more and more uncertain. The chances that a particle will pick up enough speed to get out becomes ever greater. Basically at some point it would take a force stronger then any that exist to keep these particles in a small enough space.

[manaeiou]

holy fk 600million frames/s...

[RealityHurts923]

Im all for education but how exactly is this so important to loose sleep over?Are people that desperate to find the truth to existance?You will learn or you wont once you die.Thats it.

[lethalvb01]

I love this! I love this. I love this!!!

[orlandorjames]

6 seconds ago Just a quick questions that has been puzzling me.

If quarks are sub atomic particles and if these particles are suppose to be energetic and compose the all known objects like neurons, why then do neurons require certain things to live when they themselves are suppose to be made up of energetic particles?

[SuperMerlin100]

@orlandorjames Because no chemical or even nuclear process could extract the energy out of the quarks.

It would require breaking the bonds between the quarks, which would take far more energy input then you'd ever get out of it. This would also sent neuron on fire.

[featheredmusic]

Who are the 3 inch worms who disliked this video?

[SASNIGHTCRAWLER]

are the particles they collide releasing different energie frequencies, you know like electron/positron Gamma ray etc? and has anyone found out anything else about Holons and spinions from the electron? One more thing...if a particle reaches speeds such as these, where is the infinate mass or growth in mass? this means traveling at 99.9999 etc the speed of light is in fact possible doesnt it? please reply if you can...thanks.

[wullz16]

@SASNIGHTCRAWLER i think i can answer the growth in mass problem. If a particle was accelerated to 99.999999% of c, then the particle will have a relativistic mass about 7000 times the rest mass. This mass is still very small, consider the supposed particle was a neutron. You will need 1000 moles (a mole is a very large number) of neutrons to make 1 kg. So if you have the equivalent of 7000 neutrons, you dont have much mass at all. Hope that helped.

[SASNIGHTCRAWLER]

@wullz16 Hi and thanks, check this out, i square rooted 100 KeV of Gamma and if you look at the charge number in the electron you could be suprised :)

[CITCMusic]

Do you know what's funny here.... at 1:40, one of the blue balls is actually a lighter colour! AND, when he muddles them up, he's actually splitting more than 2 quarks there... I didn't realise it could be done. :) ^ ^

Jokes, I know it's not literal. :P

[yourboycal]

12 sub atomic particles ! fuck! change your stupid more info section. misinformation spreading fuck

[Zayin1993]

WHAT!!! 99.999999 % the speed of lighT!!????

THATS!! near theoretical impossibility!!!

[hyperdrachen]

@Zayin1993 It is well over 9000.... kph

[arcturian627]

I'm sooo psyched for the LHC!

[cheasea]

The awesome Carl Sagan was replaced by this kid....

[jockedahl123]

Carl Sagan sucked balls.

[cheasea]

@jockedahl123 thank you

[sidewaysfcs0718]

the world of the large , the stars , galaxies and stuff ...

its limited to us ...we have a horizon ..we cant see past the cosmic microwave backround ...for several reason but the main one is the expansion of the universe

but the world of the small ...is still strange and misterious to us. so i think its more important to discover everything we can about how particles work before we think about big stuff again.

[cheasea]

@sidewaysfcs0718 I agree, but really, I think we should focus on everything. We're a species of information, of discovery, that is what we do best and that is what we should focus on, only problem, we're still too dumb to understand that we yet don't understand. If our focus as a species was to discover the beauty of existence, instead of trying to take it for our own individual selves, then there would be no desire of hoarding it all, allowing us to experience the full depth of being

[morgandude2]

@cheasea

Absolutely correct!

[MilletGtr]

this is so exciting!

[EyonDreams]

,ass is an illution

[Labbyface]

Someone should break your fingers

[EyonDreams]

i meant to say that mass is an illusion

[Labbyface]

Oic.. Sry. I thought that you were trying to be a perv.

[shep312]

particle physics gives me a hadron

[D0g63rt]

That is a pretty big hadron

[independence8]

@shep312 not new

[shep312]

true.......i'm a fraud

[Wraithofvolsunga]

@shep312

TURBOPUNS!!!

[TheCaptainLulz]

@shep312 this comment is epic!

[MrLozable]

@shep312 OLD

[gatoradeee]

@shep312 lol i always thought it be funny to call it the large hardon collider

[tomczyce]

@shep312 omggggg....lol

[Asuperl33tninja]

@shep312 lol I see what you did there :P

[farenhai]

@shep312 Very clever!

[violentauntie]

WHAT IS MASS? nicey northern geek "theory into fact", Bah, you make the rules to make yourself important, none of it helps shit (apart from you cox) in this world and certainly doesn't explain anything. OK cox tell what mass IS? NO not how it's detected or what you call this or that, WHAT IS MASS???

[geodesicks]

Interaction with a scalar field condensate, that we now call the Higgs field.

[violentauntie]

Combination of further terms. Take 'interaction'. We inherently know what it means, it's not reducible. Cause and effect (interaction) as inherently understood and applied to this form of existence is more complex than M theory. The arc of a cricket ball and batsmans adjustment of his physical body to respond computed in real time is more complex than any possible way of describing it with infinite time to do so. We cannot reverse engineer reality, or use cypher to enlighten, only experience.

[violentauntie]

The enlightened being Einstein was able to 'realize' that the laws were wrong sitting at a desk in a little office. He also happened to be so educated and motivated as to explain this to the 'authorities'. For centuries we had believed that the laws were correct because they fit the experiments we designed for them. They were not incomplete, they were wrong. Pearls before swine.

[sidewaysfcs0718]

newtons laws arent wrong ..they just dont explain in detail how gravity works ....

[independence8]

@sidewaysfcs0718 they are wrong in the relatavistic limit

[powpanda]

@violentauntie

Classical mechanics (the old laws) explain very accurately our world that we usually see - fairly large sized objects and low speed. When the speeds become sizeable relative to speed of light, classical physics completely fails, and we need a new model - relativistic mechanics.

At extremely small sizes and low speeds we have quantum mechanics. At small sizes and large speeds - quantum field theory.

None of them is right or wrong, they just fit reality better at that dimension.

[geodesicks]

No causal relationship is meant by "interaction" in quantum field theory, which is the framework of the standard model of particle physics today.

You are a crackpot. Learn some physics and what the words mean.

[violentauntie]

And the standard model of particle physics couldn't possibly be barking up the wrong collider. I was debating 'what the words mean'. By no causal, you mean phenomena that spontaneously exists independently of any and all other phenomena? Must be magic. You forget you are talking about academic physics in relation to a program made for your gran. You cannot reify the sci fi dreams of your childhood. Go watch Time Team schoolboy.

[geodesicks]

Interaction means coupling of two or more fields in the Lagrangian or action density of a quantum field theory.

[keggerous]

this guy looks young but hes got grey hair...kinda like this kid i went to school with. he was like 16 but had bunches of grey hair.

[OhMyGodEinhornIsAMan]

Brian Cox is 41.

[keggerous]

oww man he looks pretty young....i bet when hes 90 he'll look like hes 40, but his hair will be as white as Gandolf's.

[cusanusnicolas]

Orgasmic! Little Big Bang!

[DoubleDutchBust]

Of course i am trying to be :kind about it.

In a

codex kind of way. :)()(

[sinwow33]

You have a thing called the standard model which covers all particles and their interactions. There are four types of interaction or force and they are strong, weak, electromagnetic and gravity (but standard model does not relate to gravity). For each force there is a force carrying particle and they are gluons for the strong force, W and Z bosons for the weak force, photons for electromagnetic force and gravitons for gravitational. Now the graviton has yet to be discovered if it exists at all.

[jplate8]

I was watching this video

then at 1:12 I heard the dude say "hundred"

I immediately thought Holy shit it's Brian Cox!

[paimail21]

The sound at 53!

IT's from a game named AIRFIX DOGFIGHTER!!!!!!

[raahr]

sounded more like the clack of a billiard ball.

[paimail21]

no sorry i ment 1:53

[Fapsamup]

It sounded more like a Star Wars Tie Fighter Blaster.

[atlastasparename]

I have some questions regarding the "w" and "z" bosons - alleged "mediators" of the "weak nuclear force". Where do these particles live? Inside all atoms? Inside all radioactive atoms? Inside some radioactive atoms? Inside no atoms? Do they pervade all space? Where are they exactly?

[marclab1]

They are very interesting, especially the uncharged Z ... They are the unit of energy, a number associated with a name (W for example, with it's associated value), that is absorbed or released during the weak interaction process. So that's why they are thought of as a field in quantum field theory. The field being excited gives the wave property. The "unit" identity gives the particle property. Hope this helps!

[Shalek]

So they are not particles but a behavior of?

[marclab1]

Both. We call everything associated with this observation- the mass, the charge, spin, all these properties- a Z particle. Particle because the properties always are together in a "package". We observe certain weak interactions and see a package (excited from the disturbed field) containing all these ingredients spit out. Particle is an ok description, and that's why the word boson is defined to represent what we are talking about. Can you touch one if you are small enough? I like to think so.

[Shalek]

Thanks a lot!

[violentauntie]

Ahem, please tell what mass is (not how it's detected), or stop talking about it as if you know what it means

[marclab1]

Bear with me: In quantum field theory, the big bang happens, creating an energy filled universe; in other words just a HUGE fireball of everything. The "energy fireball" spreads out and separates into light speed field particles- quanta. The area between them and in which they live is "space". Both are "the universe". Mass: The measurement that an interaction between a higgs and other field particle perpetuates through space. In comes light speed field particle, out comes slow mass particle.

[arshsingh1984]

finally switched it on today :-)

[RJL738]

It is VERY likely that quarks and other particle are made of a very complex errangment on smaller particles and those are composed of smaller ones for several levels at least.

[RJL738]

In addition to the three quarks that normally make up neutrons/protons there are theories that their may be a few more quarks that occasionaly reside in protons/neutrons. Their are also smaller particles called gluons, that hold together quarks. Their are 8 kinds of gluons that in addition to the strong nuclear force play a big role in holding neutrons/protons and the nucleus together.

[Hivernya]

where is the first part?

[BrightSoul80]

this is the first part

watch?v=bw5TE5o7JtE

[Hivernya]

thanks! oh I thought that one was another documentary -.-

[watchman241]

I dont like that mancoonians accent.

[Aeropher]

good series but to learn about quarks ill have to stick to my textbooks lol