I love your enthusiasm and ability to explain complicated things in a simple way by the way at 4:51 you seem so happy with your job that you are almost laughing
This channel should seriously be mandatory for any science teacher to subscribe to, if for nothing else then at least to be able to bring up a selection of videos to add to their "further reading"-curriculum.
@9hello123 they might know the maths, but have they ever SEEN an electron gun and someone who makes them? That's what I like about making these videos... It's the stuff I learned at school, but suddenly it's real and in someone's hand!!! From my experience on other projects (like periodicvideos, etc) this is what makes a handful of students go from "okay I understand the maths" to saying "actually I could do that as a career!" And for everyone else, it's just cool to see it! Just my opinion.
This explains more about the Gas Processor hope you got that too ;-). For now we know about the need for the highly polished surfaces and laser light interaction.
hey, great video! Quick question, does the laser that starts the electrons moving from the cathode use the same principle as the way that the photons cause electron ejection in the photoelectric effect?
@brenoakiy photoelectric emission, its called. some materials (also selenium,caesium,lithium) can release electrons merely by exposing it to light. Exposure meters used in cameras use this effect. I really wish he had explained a whole lot more, about a whole lot more things. I know Brady is on a time limit, but Lee could at least aim it a little more on the comlex end, imo. Thanks for another great vid tho guys. Always appreciated :)
how wonderful it is to be talked to like an intelligent being, i didnt understand all of that, but thats okay big network tv stations, i will use my brain & ill figure it out myself
@brenoakiy Im not sure, to be honest, but wish he had explained it. Usually (tv's etc)electrons are produced by thermionic emission,which is a heated up filament(often tungsten)which produces a 'space cloud' of electrons.these dont go anywhere until a large potential dif is applied between the filament and an anode.he refers to it here as electric field.sounds like his one works in 'reverse'. a pd is applied first, then a laser is used to trigger a big torrent of electrons in a very short time.
Only if there's something to break down between the cathode and the anode to carry the spark- these experiments with electron guns are conducted in ultra high vacuum. If there is no gas or very little of it, then there won't be a spark for a range of voltages.
@brenoakiy Though if you have the time, I'm sure wikipaedia or somewhere online could tell you all about it. Dont take what I've said as fact - it's all I could remember, and I had to look in a book here to refresh (yes, a BOOK!) Check everything for yourself.
*Plasma is created in black holes as matter is accelerated to almost the speed of light as it falls into it. Is it possible that dark matter and energy is the byproduct of the matter that falls into black holes, and the big bang released this dark matter back into our universe. CERN is a reversed engineered black hole. It accelerates plasma artificially to achieve the same result by producing quantum partials and that black holes create the same partials that CERN does. (see video
Some people seem to be asking you to make longer videos. Please don't do that. I subscribe to a lot of creative commons channels, but I rarely have the time to watch them. The length of your videos is just perfect.
@MadMacheart you don't have to take physics to learn something. School don't teach anything, they make you prepare for a certificate to go to work. Learning comes from self motivation and desire. You have hunger for knowledge? If yes, then start reading science books, in this case: physics books.Your regret should be about WHY you are not reading them now (assuming you are not) instead of why you haven't taken physics.
Now I know how it works - I just need to find out why I need one
I love your enthusiasm and ability to explain complicated things in a simple way by the way at 4:51 you seem so happy with your job that you are almost laughing
Why do the electrons not get absorbed into the anode?
love this channel
Loved it
This channel should seriously be mandatory for any science teacher to subscribe to, if for nothing else then at least to be able to bring up a selection of videos to add to their "further reading"-curriculum.
@9hello123 they might know the maths, but have they ever SEEN an electron gun and someone who makes them?
That's what I like about making these videos... It's the stuff I learned at school, but suddenly it's real and in someone's hand!!!
From my experience on other projects (like periodicvideos, etc) this is what makes a handful of students go from "okay I understand the maths" to saying "actually I could do that as a career!"
And for everyone else, it's just cool to see it!
Just my opinion.
I love your rnthusiadm and ability to explai things in a simple way btw at 4:51 y
very cool you make great videos! thanks,
wow .. why haven't i found this channel up until nao D: sooo subbing
thanks from Egypt
muy buena explicación
awesome and cool
This explains more about the Gas Processor hope you got that too ;-). For now we know about the need for the highly polished surfaces and laser light interaction.
@huntingvuk thank you!
hey, great video! Quick question, does the laser that starts the electrons moving from the cathode use the same principle as the way that the photons cause electron ejection in the photoelectric effect?
@brenoakiy photoelectric emission, its called. some materials (also selenium,caesium,lithium) can release electrons merely by exposing it to light. Exposure meters used in cameras use this effect. I really wish he had explained a whole lot more, about a whole lot more things. I know Brady is on a time limit, but Lee could at least aim it a little more on the comlex end, imo. Thanks for another great vid tho guys. Always appreciated :)
4:00 "what is vacuum?"
you'd expect anyone who's walking in that room to already know what a vacuum is lol
@MadMacheart it's never too late!
@5:01 Thumbs up for the ninja guard :P
Joke aside I love the channel. thanx!!!
The cathode would need to be at a negative voltage for this to work.
how wonderful it is to be talked to like an intelligent being, i didnt understand all of that, but thats okay big network tv stations, i will use my brain & ill figure it out myself
So, can the electron beam intensity can be controlled by laser beam intensity?
Been lookin at conditioning and annealing the stainless plates. Also wondering if nickel would be better than stainless. Any comments.
Clay
HOW DOES MAGNETS WORK? (:
Love the Video (:
Are there any other uses for an electron gun other than particle accelerators?
Galium Arsenide, when will you be part of my CPU?
doesn't that cause a high voltage spark between cathode and anode?
How does the laser enable the electron flow?
@brenoakiy Im not sure, to be honest, but wish he had explained it. Usually (tv's etc)electrons are produced by thermionic emission,which is a heated up filament(often tungsten)which produces a 'space cloud' of electrons.these dont go anywhere until a large potential dif is applied between the filament and an anode.he refers to it here as electric field.sounds like his one works in 'reverse'. a pd is applied first, then a laser is used to trigger a big torrent of electrons in a very short time.
"Once it's gone through the hole my job as a gun physicist is done"
I read that the Diamond Light Source uses a thermionic electron gun...
Good man Irondmax, good man ;-)
Only if there's something to break down between the cathode and the anode to carry the spark- these experiments with electron guns are conducted in ultra high vacuum. If there is no gas or very little of it, then there won't be a spark for a range of voltages.
about the laser part, does that have anything to do with the photoelectric effect?
Was he talking about conditioning, to improve effeciency? like a lawton cell.
Clay
@jeebersjumpincryst so basically, the laser (photons) gives an extra "boost" to the electron emission
xD
Oh! You ARE Brady! Haha
@rapturecase Its called a reflection.
The process sounds like that of spallation- if that's what is going on, then the electrons are literally being knocked off the target by photons.
wait.... so i can get a Powerbook 170 and take out the electron gun, and make a particle accelerator?
sure yeah ill make electron guns
why is there a picture of a guy painted on the cathode?
@brenoakiy Though if you have the time, I'm sure wikipaedia or somewhere online could tell you all about it. Dont take what I've said as fact - it's all I could remember, and I had to look in a book here to refresh (yes, a BOOK!) Check everything for yourself.
Is that some Labview? I think that's sum Labview right there. :p
I regret taking add math :(
but Im GLAD I took physics :D
yea. like you say, it is all in the science
all the answers are there, if we look
you 2 caught me looking
LOL
this is a good video
more or less
different types of semi conductors coated onto the surface of an electron gun
more like a impedence layer i guess
have any parts for sale or donation? i am making a hand sized model,
@BackstageScience don't you have google partnership!?
why dont i have any audio?
Are you Brady's brother or...?
*Plasma is created in black holes as matter is accelerated to almost the speed of light as it falls into it. Is it possible that dark matter and energy is the byproduct of the matter that falls into black holes, and the big bang released this dark matter back into our universe. CERN is a reversed engineered black hole. It accelerates plasma artificially to achieve the same result by producing quantum partials and that black holes create the same partials that CERN does. (see video
Some people seem to be asking you to make longer videos. Please don't do that. I subscribe to a lot of creative commons channels, but I rarely have the time to watch them. The length of your videos is just perfect.
@MadMacheart I am 40, mopping floors ATM just to attend Uni again.
im watching this science videos with hopes of building an iron man armour.. haha...
i only use 304
then let it cook overnight
That's a pretty far cry from the much simpler thermionic electron gun which is used in small LINACs and cathode ray tubes.
1 man was gun down
thumbs up if you think im a douche bag for saying thumbs up :D
this guy must make a shit load of money can anyone tell me how much a scientist can make i know its all government funded
Khan Academy
Complexity is an illusion and a distraction. Tell us why it happens and don't avoid doing work to be truly useful.
@MadMacheart you don't have to take physics to learn something. School don't teach anything, they make you prepare for a certificate to go to work. Learning comes from self motivation and desire. You have hunger for knowledge? If yes, then start reading science books, in this case: physics books.Your regret should be about WHY you are not reading them now (assuming you are not) instead of why you haven't taken physics.