. . . "Presents an introductory lecture on the physics of semiconductors. Demonstrates thermal EMF, photo EMF, and rectification." . "Brattain on semiconductor physics" . "Brattain on semiconductor physics"@en . "Presents an introductory lecture on the physics of semiconductors. Demonstrates thermal EMF, photo EML, and rectification."@en . . . "Semi-conductor physics"@en . . . . . . . . . . "Brattain : semi-conductor physics"@en . . . . "Bell Telephone Laboratories, inc." . .