AT&T Archives: Dr. Walter Brattain on Semiconductor Physics

See more videos from the AT&T Archives at techchannel.att.com/archives
In this film, Walter H. Brattain, Nobel Laureate in Physics, presents an introductory college-level lecture on the physics of semiconductors. He demonstrates by experiment such semiconductor properties as thermal EMF, photo EMF, and rectification. He introduces a simple mathematical model to describe the observed properties of semiconductors.
The history of the development of semiconductors, the impact of new discoveries and some of the new phenomena are also discussed. Dr. Brattain shared the Nobel Prize in 1956 for his co-invention of the transistor. He was a member of the Physical Research department of Bell Laboratories.
Footage courtesy of AT&T Archives and History Center, Warren, NJ

[@abhijithanilkumar4959]

Semiconductor physics by the man among the three who invented transistor and won noble prize for it What else do you want

[@thevoid141]

This is undoubtedly the best educational video on youtube, because how many times would you get the chance to learn concepts from the very person who invented it. Thank you AT&T.

[@plankalkulcompiler9468]

Underrated video! Explains it much better than the teachers in university (no doubt about that as he was among three that won the Nobel prize for their invention of transistors). I think this video should have a restoration to have better quality.

[@nobodynowhere7163]

Amazing! I took three semesters of semiconductor physics (basically a math class!) and this lecture is by and large the best ever!

[@RalphDratman]

Superb basic lecture by one of the inventors of the transistor. From Wikipedia: "Walter Houser Brattain (/ˈbrætən/; February 10, 1902 - October 13, 1987) was an American physicist at Bell Labs who, along with fellow scientists John Bardeen and William Shockley, invented the point-contact transistor in December 1947.[1] They shared the 1956 Nobel Prize in Physics for their invention."

[@dr28kumar]

How wonderful to hear from the discoverer of the transistor. Tqvm AT&T Tech Channel

[@radiofun232]

The far best explanation on You Tube about how a transistor works.

[@dvscrobe]

This is amazing stuff. Important videos for physics students to watch. So, it sounds like during the war, we were aware of N and P type semiconductors but had no idea what made a particular type. I never seen that formula before. Were they ever able to create a 100% pure silicon or germanium? I guess maybe that was impossible.

[@greensombrero3641]

Can you go over that outline slide once again, I think I missed something

[@bhawmik]

Great piece of history!

[@radiofun232]

Well explained, especially the "hole" effect.

[@MisterTalkingMachine]

That must be a LED at 27:45

[@ibpointless2]

Great video!

[@mamorumotohasi9348]

experiments are very interesting. I want to do it.

[@udiuks3052]

Waoo. I am watching an inventor through a device ( smart phone ) who invented the root technology (transistor) .

[@64etto]

Merry Christmas

[@wbeaty]

See the "LED" stuff starting at 26:17. But he seems to say that bandgap is in the near UV. Perhaps it's not LED emission, but instead avalanche-light, as with contemporary "silicon visible emitters" based on reverse breakdown.

[@somrikchatterjee9383]

Due to reverse biasing

[@Shmaristotle]

28:29 "What is important to learn..." and then the video skips! Oh well, great video anyway.

[@JohnIwaszko]

Dam now we will never know what was important to learn!

[@mohammedviso2269]

I enjoyed with this video

[@Ak-yz6td]

lovely

[@jostpuur]

Why there's nothing about Bloch waves?

[@wayarjoel]

Y COMO ES QUE UNA RELIQUIA COMO ESTA.. NO ESTÁ TRADUCIDA..

[@tiov3001]

The important lesson has been withheld. Illuminati confirmed.

[@ApricityGlow]

Found out this man is my distant cousin when I asked my mother about the same last names.

[@braunschreiber6230]

Why not use aluminum which also has three free electrons instead of Gallium as impurity?

[@vinolpinto6060]

omg.. he was just like a robot.. didnt make mistakes while talking

[@JeremyHongelectronics]

5:30 Solar Power!!!!

[@mamorumotohasi9348]

That's study History.

[@tubite2]

AT&T trade secret, maybe.

[@NJKirchner]

Great information but must watch at 2x speed. I would have been asleep in 10 minutes in his class.

[@DataWaveTaGo]

+Norman Kirchner People had more time in those days. ;)

[@wisp1adjukoneadj629]

@@DataWaveTaGo And hand wrote notes.

[@sammin5764]

🌟🌟🌟🌟🌟

[@areniasweber8822]

Change the video speed to 1.5x if you're wanting to watch without dozing off.

[@sadredman]

Is he saying 'extree' for extra, like some old timer in a western movie?

[@Jimmyzb36]

Electro Motive Force

[@varunshrivastav8876]

00:35 it's quite ironic that he's teaching about history

[@danielbowen6011]

For those who like a challenge: watch this entire video on your phone in bed without falling asleep. Took me a couple tries to get through.

[@AyushYadav-mr5jj]

Just did it.

[@legslegal]

Great video!!!