| Автор | P Denton |
| Дата выпуска | 1952-02-01 |
| dc.description | An instrument is described for determining minute dimensional changes on a specimen enclosed in atmospheres of different but pre-determined moisture condition. Localized Fizeau fringes, formed by reflexion from a pair of aluminized glass plates that correspond to the fixed and movable jaws of a normal micrometer, are used as sensitive fiducial indicators for the appropriate setting of a micrometer head. One edge of the movable plate is laid in contact with the specimen and the other rests on a lever, the longer arm of which lies in contact with the micrometer head. This is adjusted until the fringe formation, which is viewed through the eyepiece of a Fizeau interferometer, indicates parallelism of the aluminized surfaces in a direction set by the line joining the ends of the lever; specimen thickness is then derived from the reading on the micrometer and a knowledge of the lever reduction ratio. Air of standard moisture condition moves past the specimen in a glass cell which is fitted with a flat roof to transmit the light beam from the interferometer. The instrument applies a small known force on the specimen and is especially applicable to measurements on compressible bodies. Data on the variation in diameter of cellulose monofilament with moisture condition are presented to illustrate the performance of the instrument. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | An interference micrometer for diameter measurement of textile filaments in moisture-controlled atmospheres |
| Тип | paper |
| DOI | 10.1088/0950-7671/29/2/306 |
| Print ISSN | 0950-7671 |
| Журнал | Journal of Scientific Instruments |
| Том | 29 |
| Первая страница | 55 |
| Последняя страница | 57 |
| Аффилиация | P Denton; The British Cotton Industry Research Association, Didsbury, Manchester |
| Выпуск | 2 |
