TY - JOUR
AU - Harris, D T
AB - DESCRIP‘I’IONS OF ’rm EXIIIBITS on Lvhich the dial markings make provision for taking account of the direction of change of pressure (rising or falling), and of the height of the observing point above sea-level. jVeteorologists usually expect to find something of interest on the stand of the CAMBRIDGE INSTRUMENT CO., LTD. ‘I’his year there were two such exhibits, the s-point recording potentiometer---by means of which a halanced bridge system can be utilised to record temperature at three points on the same chart-and a new humidity recorder. The latter instrument makes use of a strip of goldbcater’s skin as the sensitive element. The variations in Iength of the strip arc recorded by means of an electrical micrometer, the design of which is due to Dr (;. A. Shakespear. An ordinary thread recorder is used and the instrument can he placed at any desired distance from the recorder. It is under- stood that check readings with a whirling psychrometer have shown very satisfactory agreement with the traces mer a long period. PHYSIOLOGICAI, APPARATUS. IIY D. T. HARRIS, M.B., D.Sc. I. SPECIAL SENSES AND PSYCHOLOGY ~‘IMINC; mechanisms of varied patterns designed specifically for the applied sciences might be used with advantage in 
TI - Physiological apparatus
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/7/2/412
DA - 1930-02-01
UR - https://www.deepdyve.com/lp/iop-publishing/physiological-apparatus-0CH0dUUIk0
SP - 75
VL - 7
IS - 2
DP - DeepDyve
ER -