Vacuum Tube - Sixty Symbols

[KittenKoder]

One thing, cathode ray technology, as old as it is, is also the only technology capable of being used in digital components that can withstand EMPs. Just a fun fact.

[jayejayeee]

you have some great stuff here

[ttwilkable]

some great inforamtion here thanks

[coldlogic1]

rectifier diode? wow in tube form, i want to know about that for sure, even a normal rectifier boggles my mind.

[aluisious]

My dad works with vacuum tubes all the time making power supplies for radars handling up to hundreds of thousands of watts. The amusing thing is a politician came along to look at the plant and declared "one day, technology will replace all these devices with microchips." Clearly did not understand fairly simple physics involved in cramming a quarter million watts through a square centimeter of silicon.

[shoottherunner8008]

I always love the international interest these videos get which often lead to 'original' english :D

[gavinplaysbass]

JJs are the best!

[yellowdart137]

tubes cost more because fewer are made and they take a lot of labor to make. they end up being made by hand and used buy a few select markets.

audio, radio and science still use tube heavily. if made in volume yes they would be dirt cheap like light bulbs.

i am an amateur radio operator and tubes are what you use if you really want to get out. that FM/TV, even digital, station you like? good chances the finals are tubes.

as far as sounding better, that is opinion and depends on use.

[MaCs1313]

Very interesting video and topic to bad that the professor doesn't explain very good, for me it's hard to fallow, for the record I think I'm good at this sort of explanations.

[RockerverbFX]

Im confused. I thought valves were newer than solid state... like the amps used to be solid state now everyone pays more for tube amps. Why do they cost so much more than solid state amps if they were around before solid state?

[cuntylishus]

@RockerverbFX Nah...valves predate solid state technology by a long way. People pay more for valve/tube amps because A) they're 'retro', and that holds a certain appeal for many people and

B) many audiophiles claim that they endow the signal with a characteristic 'warmth' which you don't get with solid state - but this is mostly nonsense.

Try Googling for 'top ten audio lies' and the 'vacuum tube myth' for more info. :)

[clayphish]

@cuntylishus actually, there is more to why people like tube amplifiers. One of the biggest is how tubes tend to alter the transients of a sound source. Because tubes tend to react slower to passing signals then transistors, the result causes the transients (initial spike in an audio wave) to become rounded off. Because of this it is interpreted by the brain to be more natural and pleasing when compared to transistors. This is why most guitar players use tube amplifiers. It is quite noticeable.

[russofamerica]

There's some really fun science going on at YouTube. Great contribution!

[Fendervana]

Am using a Scott 299c tube amp connected my computer while watching/listening to this. :)

[PhattyMo]

TUBELOVE! Tubes Rule.

[wbeaty]

Nice drawing of Nikola Tesla's lecture w/fluorescent tubes.

Trivium: In a much later interview Tesla couldn't see what the big interest in vacuum triodes was about ...since he'd invented them in secret and had been using them prior to 1900. So he says.

[panzarw]

do a video about diode vs lamp guitar amplifiers, why they are better. You are British and you love the guitar so do like a tribute or something.

I will even subscribe =D

[WOWJBEOWULF]

I worked with tube systems for several years, I was surprised at the remaining technology that was waiting for computer technology to handle power outputs. I have never seen "tubes" named "valves" in the United States; but the principle is the same. What tubes are good for is high power outputs, seen in radio transmitters, the radio receivers were quickly turned to transistors and then Integrated Circuits. There are many classes of tubes, klystrons are high end, and require a warm-up to use.

[jerryg50]

Solid state technology is quickly taking over for high power applications to replace vacuum tubes. Many of the new high power microwave and broadcast systems are completely solid state. For a while more, there will still be some need for very specific types of vacuum tubes. Eventually, they will be completely phased out.

In looking at the basic light bulb, the CFL, and LED technology has taken hold. Soon it will be high illumination electro-luminescence technology.

[espulu]

I watched until about 8 minutes and only then realized he is talking about the glass things in my guitar amp.

[hikariyouk]

Is that a Leak Point One amp?

[Mathview]

Great summary of thermionic diode and triode. TY for posting. BTW if I'm not mistaken the thermionic emission of electrons from a heated cathode is sometimes called the Edison effect. The emission process itself is analogous to evaporation of particles (electrons) from a 'liquid-ish' phase (confined in the metal) into a gaseous state. Raising a cold cathode voltage eventually causes field emission. Which can image the molecular structure of the emitter, as in the field emission microscope.

[HWGuyEG]

I wish I could still buy CRT displays... instant response time, amazing colour... nothing better exists except for SED(patent trolled out of existance) and LED(extremely expensive and needs a very good controller)

[indifferenceTV]

he drew a penis

[ShallowThoughts]

I killed my TV once, that way, accidentally.

[HiAdrian]

The title didn't have me interested. How wrong my presumption - great video!

[viper100200]

I like that something that hasn't been cutting edge science for 100 years is still explained and completely new to most people. Too often I think we don't look at how we got to our modern age.

[Trisscarro]

@viper100200 we don't get born with all the knowledge of history.

don't belittle people for not knowing something but appreciated it when people want to learn instead.

[MrTechGuy1995]

Cathode ray tubes arn't used in TV's anymore, where the hell am I then?

[PartVIII]

thank you so much for posting! i <3 Nottingham University!

[comface]

....I don't understand this.

[buzzausa]

1.21 GigaWatts?? 1.21 Gigawatts???? AAAAAAAAAAAAHHHHHHHHHHHHHHH

[anonysquirrel]

Electrons striking the anode generate x-rays. Thanks to flat-panel displays, we no longer have to sit in front of cathode ray tubes all day, being bombarded by x-rays.

[zeffii]

another top video! serious hardware hackers back then ey? :)

[Shoyrou]

just a small observation:

If there is a complete vacuum, then wouldn't cooling them off be impossible?

[jvalsson]

Very interesting

[heyandy889]

Maltese Cross was freaky. I love it!

I'm glad that the speaker mentioned "solid-state" devices in 1960. I love how stubborn humans are when getting machines to work. Relays, valves, solid state transistors, integrated circuits; we keep using smaller, faster devices to do our work.

[ifsey]

Interesting, but I find electronic rather tedious ^^, so this video isn't as good as the others IMO

[GRAHAMAUS]

@ifsey you're not saying anything about the video, just about yourself.

[spektrum1983]

This is relevant to my interests! Favorited and thumbs up over 9000 times.

[RustlessPotato]

@spektrum1983 OH MY GOD IT'S OVER 9000 !

[lozleigh]

You've just reminded me that my valve amp needs a service! Thanks!

[Direkin]

And to think computers were once built with these... My oscilloscope uses CRT too; call me old fashioned but I still prefer vector over dot matrix :) When I was a kid, my dad brought home some old military electronics books; all valve stuff. Just to give you some idea how old these books were, the last in the series was on transistors and had "TOP SECRET" all over it :P

[Surtak]

I will never understand why we still seem to refuse to correct thing like the opposition of current and e-flow.

Typical of physics isn't it?

[johnclavis]

Years ago, I was confused when I first heard the term "valve" to refer to what I always knew as a "vacuum tube" -- but I now have to admit, "valve" *is* a better word than "tube"!

[cc6809]

Consider the Eimac 4CM300,000GA: a ceramic/metal, multiphase-cooled (water/vapor) power tetrode with a Thoriated Tungsten Filament/Cathode... max anode dissipation is 300 kilowatts steady state all in a package close to 60kgs in weight. Awesome conversation piece :-)

Great video Sixty Symbols!

[WhiteRAZOR]

Most Sixty Symbols videos are long! Physics is draining my quota :(

[greenfire]

The use of the white board was very effective

[frenstep]

Thanks guys....very cool stuff....keep posting as much as possible.

[paronfisk]

6:17 penus lol

[kdawgiedawg]

@paronfisk i thought the same thing although i thought penis. LOL

[MrKhody]

sixtysymbols are so educational -

[Harshfate]

this is great! thanks!

[Territomauvais]

...awesome

[skinnyjohnsen]

I swear buy those vacuum tubes when it comes to pre-amps. And if I'd had the money, I'd have them on my sound shrine ;-)

[0Banjo0]

Templars

[puretroubleman]

how do you make a maltease cross? poke it in the eyes.

[Arthur61987]

A camera man and light technician. You should get paid more.

[Gameboygenius]

5:45 See: xkcd 567

[jeebersjumpincryst]

@Gameboygenius ha ha - thanks!!! love those cartoons.... :)

[lejink]

awesome!

[JimPrower]

Tube amps, apparently, are the best sounding thing in existence. Vox amps, with their high number of tubes, are especially valued.

[jgordon707]

As an audiophile Im highly invested in Triodes!

[culwin]

He made a Green Lantern!

If he could only shrink that down to fit in a ring...

[Envergure]

I heard somewhere that if you turn on a tube amp with no speakers attached the tubes will all be "blown". Is this true?

[Rascal157]

@Envergure

i have a tube amp and they are very fragile, you cant turn it on and just rock heavy metal, you have to let the amp "warm up" and thats why most amps have a standby" function so your not on and you can let the tubes inside your amp warm up so they dont burst when played hard.

Yes tube amps sound better.. much less digital if u run alot of effects or tones :) however vox, as any amp company sells tube amps. Their is nothing particularly special about Vox's! thanks

[Envergure]

The reason vacuum tubes have to be evacuated is that any air in the tube would ionize and cause an arc if the tubes were operated at high enough voltage, and that would really suck because a high-power vacuum tube failing can be quite dangerous and expensive.

[Glickstick]

I like when he says chap

[kagestar616]

Need...more...SCIENCE!

[BenjaminFranklin2u]

This video gets me high...

or maybe it was the weed....

[zapo147]

@BenjaminFranklin2u Prob the weed.

[captwasabi]

6:30

"This is quite a meaty one!"

That's what she said!

I'm so ashamed of myself....

[LaileB22]

a knowledge dealer.... i need more space related goods please : )

[576ito1080p]

love this video,and Themionic valves in Hi-Fi Equipment ,Thank you for this upload

[RectumPilum]

4:16 looks like Julian Smith =P

[Afrotechmods]

Brilliant video

[dsw182]

I was told a few years back by a lecturer that a cross was chosen for the object as a little nod to Crookes - The latin word for a cross is crux...."crookes"

[MrTechGuy1995]

I love The cathode ray tube, I want one at home to do experiments with!

[DeoMachina]

@MrTechGuy1995 I used to have one lying around from my old TV, you need to be careful with them though, they can be dangerous

[MrTechGuy1995]

@DeoMachina I know, I got shocked by 9kv, 30ma, so It can be quite painful. I am still surprised that I am breathing... Just very curious with electrons.

[DeoMachina]

@MrTechGuy1995 Wow, that must have been a belter! How did it happen?

[MrTechGuy1995]

@DeoMachina I was foolish, and Well I thought rubber was dielectric, and I held both of the secondays of a Neon Sign Transformer, and Well... Even through gloves. I am never doing that again. Even when I touch one of the terminals of the seconday I can feel a tingle that stings a tad bit.

[pyro5050]

i love when these videos are posted, these are great. very rare to actually learn online true information these days...

[ThrashMetalForces]

Tube amps all the way!

[enkeksinickia]

To me this is harder to understand than cosmology.

[JackDigital]

Physics joke at 1:04 - 1:16

[G3org3Master]

@JackDigital particle accelerator. No shit.

[bemanos12345]

make a video about electronic microscope!

[GenusCastor]

Edison, the dirty thief >.<

All that pop culture rage a side, nice video

[JesperA86]

sixtysymbols and all the related channels is the best thing that ever happened on youtube, awesome videos.

[FearlessSpinner]

there are like 7 of those next to me in my tube amp...lovely technology

[MarkArandjus]

O lawd not another magnet!

Must... not... make... ICP joke... must... RESIST!

[freelancewhore]

@MarkArandjus Your ability to resist is a... MIRACLE!! @_@

[ThrashMetalForces]

@MarkArandjus Jews are...magnets?

[MarkArandjus]

@ThrashMetalForces Hmm, what does that make Nazis? Wait... son of a bitch, Godwin's law wins again!

[ThrashMetalForces]

@MarkArandjus Hahaha, indeed!

[jeebersjumpincryst]

Oi! I still have a crt tv! :( its not THAT old... surely...?

[Shockszzbyyous]

@jeebersjumpincryst don't worry i have a crt tv two :)

[XsavioR38]

Its always a good day when you guys release a video. The 2 days after I found you were spent planted in my chair watching all your videos.

[jeebersjumpincryst]

Yeehaa!!!! I also have a "little problem" with sixty and the rest of them too.... ;)

Another awesome vid!!!

[eleph4nt]

as a guitar player i thank you for this video, now i understand more how my tube amplifier works!

[lulzwhot]

im addicted to australian accents

[nickcoulthard]

Awesome video :D

[koffypr]

:D I'm addicted to sixtysymbols O_o

[sixtysymbols]

@koffypr does that make me your "dealer"!?

[30LayersOfKevlar]

@sixtysymbols that makes you provider of addictive material.

[Alex77Fox]

@sixtysymbols I thought you were only MY dealer!?

[welshboy9]

@sixtysymbols Who writes these comments? Is it Brady, or somebody else??

Iowan.

[G3org3Master]

@welshboy9 It's God. ^_^

[DarkSkyPrivateers]

@sixtysymbols Thanks for the quick fix!

[sverre0511]

@sixtysymbols no, as you hand out to so many people, you are more like scarface :P the dealers are our subscription boxes

[mashugac]

@sixtysymbols Thats a case for wikileaks

[hyungsup2]

@sixtysymbols Well for me at least :P My body was just about to be cured from the addiction of sixtysymbols videos and now here it is again!!!!

I hope you have some kind of Christmas special :)

[aromchuen]

@sixtysymbols I think you're more of a "distributor", you're way too big to be a dealer! :D

[MEzm3r1z3]

@sixtysymbols why are you replying to youtube comments instead of making more sixtysymbols videos?! BACK TO WORK!

[Valendros]

@sixtysymbols

I just need another hit baby. Please. Just one more, I'll get you the cash tomorrow I swear...

[harry3life]

@sixtysymbols

get me some more of that sixtysymbols you got me last time!

[WisseSpring]

@sixtysymbols not just his if I may say so. You've got the best "stuff"!

[matics19]

@sixtysymbols You're definitely mine! This is now the only subscription I actually feel withdrawal of when you guys don't put out more videos!

[oisiaa]

@sixtysymbols Yes, more please!

[sl9guitar]

@sixtysymbols dealer man needs to stop by more often :)

[barefootjuggler]

@sixtysymbols it just makes you cool - @koffypr snap!

[Micke879]

@sixtysymbols How about you come with us to the station sir, we would like to ask you some questions. :3

[grejpfroot]

@sixtysymbols

Popular-science pusher.

[kdawgiedawg]

@sixtysymbols HA!

[stonerboner1252]

@koffypr me to

[thaandiesel]

@koffypr i with you on that