Particle Physics: Detecting Muons

Fermilab physicist, Dr. Marcel Demarteau explains how collider detectors are used to study Muons at CERN.

Category:

Education

Tags:

• particle
• accelerator
• physics
• muon
• cern
• fermilab

[officebroomer]

Great stuff.....

[shakagenghis]

All effects have causes. Is the universe an effect? Is it both an effect and a cause?

Is the big bang an effect or a cause? We purport that it is a cause, but it seems a poor cause, being an unexplained effect of drawing time backward far enough. It is only an apparent cause.  Time may exist independent of the big bang, and even precede it, may not be caused, as is thought in the Einsteinian space-time. If it represents energy, maybe time can be converted to energy or matter itself? BANG!

[vCALIJURI]

@shakagenghis what about heisenberg?

matter was always there

maybe big bang is only a recicle process

[AlexIsonSanders]

dark matter is dirty talk

[sidewaysfcs0718]

well ...depends on everyone's definition of matter ...

its easier to say there was "something" at the big bang , and that something expanded creating matter ...

im not sure u can say it was just energy ...energy is a measure of an objects mass ...or work ..or anything that can do something....

[shakagenghis]

Well, again, there is no matter in a singularity. Matter requires spatial geometry and lower energy levels than would be present in either a singularity or the big bang. So, it's a mistake to say that there was any matter in an infinitely dense state. Matter didn't form until significantly AFTER the big bang, which is why I believe it is an emergent property of energy and available space.

[shakagenghis]

It doesn't. The bing bang created all of it, hidden matter is just unseen but deduced based on its gravitational effects. A lot of people think that the 'hidden' matter is just very small, or only gravitationally reacting, but no one has ever purported that the dark matter is making the detectable kind. What is worth asking is, where is all of the dark energy coming from? No one knows for sure, but it is the dominant force in the universe. The galaxies are accelerating with scale. ODD

[sidewaysfcs0718]

a singularity isnt nothing ...a singularity is a word we use to describe large amounts of matter in 1 point of space ...

BEFORE the singularity ...well ....a good explanation is there really wasnt anything ...our universe began as a fluctuation of energy , similar to how virtual particle appear out of nowhere at small scales.

[shakagenghis]

I notice that you are trying to dominate every video regarding the subject. I've seen most of them, and you're on most of them. And while you generally have a decent concept of what's going on, you're way wrong here. There was no matter prior to the big bang, if it began in a singularity. There was nothing. Matter is an emergent property of the universe, always possible, but not until energy levels were lower, til the bang cooled did any matter take form.

[sidewaysfcs0718]

who said the dark matter created normal matter?

the big bang created all matter ...in fact all matter was already there..just in a simple singularity.

as time passes everything grows more complex ...

if u vibrate matter it will always grow into more complex patterns ..

same thing with the big bang ..the initial impulse that led to this endless cycle is unknown.