TY - JOUR
AU - Roberts, J P
AB - _. 7, . . Laboratory and workshop notes ponents C1 and C2 rest on A and B, and carry respectively while the bottom is screwed on with a rubber gasket between high-temperature mirrors Mi and M2, which are set in so as to be easily removable. Around the top plate, a small position with alumina cement (not shown). When S shrinks, distance from the edge, is a groove 4 in. wide and 4 in. deep C1 and C2 pivot about their knife-edge contacts with A. to collect any liquid that drains from the plate during use. The linear shrinkage at any instant is easily calculable from The groove can be emptied through a hollow spigot at one the mean deflexion of beams of light directed on to each of side. Inside the box a sheet of flashed opal glass is mounted the mirrors Mi and M2. The optional fixed mirrors M3 and just below the top plate and below this is placed a 250V, M4 provide reference reflexions, advisable if there is risk of 25 W pearl bulb, the supply lead of which passes through a relative movement between the apparatus and external scales. Fused silica sputtered with platinum 
TI - An optical apparatus to measure shrinkage at high temperature
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/34/1/416
DA - 1957-01-01
UR - https://www.deepdyve.com/lp/iop-publishing/an-optical-apparatus-to-measure-shrinkage-at-high-temperature-VNN7Yz4gnw
SP - 34
VL - 34
IS - 1
DP - DeepDyve
ER -