Lecture 1 | New Revolutions in Particle Physics: Standard Model
(January 11, 2010) Leonard Susskind, discusses the origin of covalent bonds, Coulomb’s Law, and the names and properties of particles. This course is a conti…
Video Rating: 4 / 5
Hank continues our series on the four fundamental forces of physics by describing the weak interaction, which operates at an infinitesimally small scale to c…
Video Rating: 4 / 5
@mdiem- if you think this Susskind looks (or even sounds) like Christopher
Walken, you are either a): thinking of a different Christopher Walken, the
actor, or b): you have no idea who Christopher Walken is. Walken has a full
head of hair, he’s quite thin, he has a lower voice, a dry but witty sense
of humor and has been in a lot of good films: The Deer Hunter, being one of
the best films he’s been in (he’s been in SO many movies that it’s hard to
pick one or two great roles out of the air like this-I’m sure more will
come to me as soon as I finish this post!)and, on the flip side Communion &
The Prophecy, probably his worst movies. (and, yes, I’ve seen King of NY,
several times-thought it was good, back in the 80s, when I was 19-20, but
last time I saw it, six months ago, I realized that it wasn’t the great
movie I thought it was. It’s almost as over-hammed-up as Brian DiPalma’s
remake of the 1933 classic, Scarface,w/ Al Pacino playing the part Paul
Muni originally played-and man, the DiPalma/Pacino Scarface SUCKS!!! I
really hate that flick).
hej bra frjohnb.
New Revolutions in Particle Physics: Standard Model
Leonard Susskind
(January 11, 2010) Leonard Susskind, discusses the origin of covalent
bonds, Coulomb’s Law, and the names and properties of particles.
This course is a continuation of the Fall quarter
on particle physics. The material will focus on
the Standard Model of particle physics, especially
quantum chromodynamics (the theory of quarks) and
the electroweak theory based on the existence of the
Higgs boson. We will also explore the inadequacies
of the Standard Model and why theorists are led to
go beyond it.
I hope someday I can take these classes. It is really a dream of my life.
Which previous knowledge would I need to understand this lecture? I just
finished secondary school did physics and chemistry but I can only grasp
The concepts, never mind understanding the lecture to a good level.
atoms charge as a state retaining the same condition or E=ΩC^V
These are the people who have the skills to pass on the knowledge to the
rest of us.
…Not an easy subject ot teach.
@whothehellgivesadamn ok.. w+, w-, z, photon, 8 gluons, 18 quarks, 18
antiquarks, 12 leptons. thats it. p.s. you should grow up man 😉
Is there a Sanford lecture series on Quantum Field Theory on youtube?
don’t understand shit but still … very entertaining and interesting 😉
@Xwowplaya exactly thats why the masses are ganna have alot more trouble
growing their minds exponentially compared to groups of people of study and
flex their mind musclelulos’
what else? maybe you believe in god?
@Xwowplaya it went up to 11,000 now
I haven’t seen a turtleneck look that good since 1979.
interesting video and very informative
He sumamrizes some things the students already have learnt before. Where is
the actual start of the series?
@jambieyes I think that this is the continuing of the “Basic Concepts”
series of lectures.
In my free time I get stoned and watch these videos.
02:13 – “Beating around the bush” – AC/DC (Highway to Hell)
this is a continuous form of education, not a regular physics class
Yep. Particles physics: Basic concepts it is practically a quantum field
theory
is this a graduate course? or and undergraduate?
don’t think this is right…the decay also releases an electron and an
electron anti neutrino….don’t understand what the original neutrino was
needed for, the emission of the electron is enough to balance the
charges…absorbing a w boson would mean that an electron CANNOT be emitted
by the process to have balance since the charges are already in balance.
woah…a nearly mass-less less neutrino loses a w boson and becomes an
electron, which has a very significant mass…how is this possible?
wtf. I just put a paper bag over my head.
Dude… that’s weak.
It sounds like the week force is really the same thing as the
electro-magnetic force. A neutron which has a slightly negative
charge(because it contains 2 down quarks and 1 up quark) pulls a positively
charged quark out of a passing neutrino, because opposite charges attract.
Am I missing something?
What I have never heard anyone explain is why teh weak interaction is
called a force. Strong, Electromagnetic, and gravity all pull and push
things around. The are the F in F=MA. Does the weak force move things?
Why do people continue to say that 4 forces govern the entire universe when
they well know that there is such a thing as dark matter and dark energy
which is completely unexplained? Just admit that these are the 4 forces
that we know about but that they don’t explain everything…
So, I am assuming a W- changes an up into a down, but what does a Z do?
I have a question. So if the weak force is caused by neutrinos converting
neutrons to protons, then how is it that particle decay is like constant,
so much so that it can be used to accurately date objects? I mean, if it
requires a neutrino, and i know neutrinos are all over the place, but if
lets say there is a point in space that has relatively less concentration
of neutrinos compared to earth for example, then it means that carbon-14
will decay slower there? Thus in that point in space you cannot use
carbon-14 to date living things?
What about weak interaction between a neutron and a z boson? If it enters
the neutron, it wouldn’t have an effect surely because there is no charge
to begin with? Also, the neutrino wouldn’t turn into an electron because of
it I’m guessing?
To: +michalchik and +The Daily Vitamin
The two W bosons are best known as mediators of neutrino absorption and
emission, where their charge is associated with electron or positron
emission or absorption, always causing nuclear transmutation. The Z boson
is not involved in the absorption or emission of electrons and positrons.
The Z boson mediates the transfer of momentum, spin, and energy when
neutrinos scatter elastically from matter, something that must happen
without the production or absorption of new, charged particles
All from: http://en.wikipedia.org/wiki/W_and_Z_bosons
Why isn’t dark energy considered one of the fundamental forces of physics?
Few Fundamental flavors “Strange” “Charm” baffle me. Flavored Quark
terminology must of been created along with colors to explain a few strange
properties in the Standard Model which states all particles are matter
whereas String Theory better explains using frequency based vibrating
strings(as Quantum makeup of Atoms) whereas the Standard Model
traditionally is based on the Greek ATOM definition of Smallest Possible
Particle helped with Planck’s Constant of smallest possible measurements in
time & space. String Theory gives a way out saying the smallest possible
thing isn’t even a thing meaning Planck’s Constant is upheld.
Can we get a video describing the other 4 flavors of quarks? Someone told
me that weak force is responsible for nuclear fusion and I didn’t get
anything on that in this video.
AMAZING !!! THANKS SO MUCH
2:39. NO, NO, NO. Where does that neutrino get all this mass from when it
turns into an electron? because if i recall, neutrinos have thounds of
times less mass then electrons.
Id say stick to Feynman diagrams when showing the actual reaction
Strange, why was the Triforce not mentioned…
Ohh well, it seems the Jedi win another battle.
3:10 – 3:20 Holy crap on a crap cracker! Parts of my mind are planning a
mutiny. I have an ambiguous headache now.
Also, do neutrinos have a positive w boson AND a negative boson, or do they
carry just one of each? I figure they carry both, but I do not want to
assume.
If the Flavor of the quark changes the characteristics, what do the colors
do for the quark?
what about positrons?
He’s much more fun to watch in Crash Course US History haha.
So if we know all of this why haven’t we been doing modern day alchemy and
making gold out of other elements to pay off the national debt?
The strong force exists only in the Proton. Two Protons can be made to
“stick” together, (despite the electrical force “trying” to force them
apart). Because you cannot make two electrons “stick” together, therefore
they do not contain the strong (or otherwise called the Nuclear) force. But
that is not to say that the strong force does not interact with them.
Opposite electrical charges “want” to attract each other. Therefore one
might think that an electron would “fall” all the way into the nucleus of
an atom; but it doesn’t. It stops at a short distance from the nucleus and
“hovers” there. Why? Because as the strong (nuclear) force can cause two
Protons to attract each other, so it can also cause an Electron and a
Proton to repel each other. The reason it is called the “weak” force is
because the nuclear force exists only in the Proton and not in the Electron
(whereas it exists in both particles when two Protons are involved). A
Neutron is just an Electron and a Proton (and a neutrino) stuck together.
Therefore the nuclear force is in the Proton part of it. Why delve into the
Quark aspect in trying to explain the strong and weak forces? It only adds
confusion and destroys understanding. There are also probably some errors
in peoples understanding of Quarks. Physicists need to make a paycheck. So
if they can’t dazzle you with brilliance they might try to baffle you with
bologna. They need to justify their paychecks somehow, right? That’s why I
don’t believe a lot of what they say. The weak force can be overcome, and
an electron can be “sucked” into the nucleus of an atom (therefore turning
a Proton into a Neutron) when competing forces are greater than the weak
force. Namely, to neutralize some of the repulsive electrical forces
between Protons in the nucleus. That’s why the nucleus is a mixture of
Protons and Neutrons.