Available online
Description
Professor Charles Newey (O.U.) introduces the Monolynx microscope, which all TS251 students receive in their home kits, and explains how it operates with the aid of an animated cross section. He s...tresses the difference between magnification and resolution, and demonstrates this. Dr. Peter Chapman (O.U.), who previously had never prepared specimens for optical microscopy, goes through the procedure in the student role with Charles Newey as tutor. A metallic specimen is mounted, filed, ground, polished and etched, as they discuss the techniques. Finally Charles Newey points out the limitations of optical microscopy and the need for a further technique, electron probe analysis. Peter Chapman then explains this and displays information that results from it.
Professor Charles Newey (O.U.) introduces the Monolynx microscope, which all TS251 students receive in their home kits, and explains how it operates with the aid of an animated cross section. He s...tresses the difference between magnification and resolution, and demonstrates this. Dr. Peter Chapman (O.U.), who previously had never prepared specimens for optical microscopy, goes through the procedure in the student role with Charles Newey as tutor. A metallic specimen is mounted, filed, ground, polished and etched, as they discuss the techniques. Finally Charles Newey points out the limitations of optical microscopy and the need for a further technique, electron probe analysis. Peter Chapman then explains this and displays information that results from it.
| Module code and title: | TS251, An introduction to materials |
|---|---|
| Item code: | TS251; 04 |
| First transmission date: | 10-03-1973 |
| Published: | 1973 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:24:17 |
| + Show more... | |
| Producer: | Colin Robinson |
| Contributors: | Peter Chapman; Charles Newey |
| Publisher: | BBC Open University |
| Keyword(s): | Animated cross-section; Electron probe analysis; Home kit; Magnification; Monolynx microscope; Resolution; Specimen preparation |
| Footage description: | Shot of the Monolynx microscope partially disassembled. Charles Newey introduces the programme. Newey with cut away section of the microscope. He uses this as an aid to explain how the optical incidence microscope works. Newey shows a strip of aluminium etched with chemical reagents to make surface crystal structure visible. P. Chapman polishes a specimen of aluminium to prepare it for microscopic examination. (This is a very lengthy process. C. Newey is with Chapman and instructs him in the process at each step of the way). Chapman now degreases the specimen in preparation for the chemical etching. Newey instructs. Chapman washes and dries the specimen. He now etches the specimen. Etched specimen is placed under the microscope. Surface crystal structure is revealed. Newey introduces the technique of Electron microprobe analysis which can determine chemical composition of materials. Chapman with an electron microprobe analyser. He points out the various parts of the machine and explains their function. He then explains how an analysis is carried out. |
| Master spool number: | 6HT/70888 |
| Production number: | 00525_5031 |
| Videofinder number: | 1556 |
| Available to public: | no |
