rheogoniometern.
/ˌriːə(ʊ)ɡəʊnɪˈɒmᵻtə/, U.S. /ˌriəɡoʊniˈɑmədər/ Physics.
In full Weissenberg rheogoniometer. A type of rheometer for measuring the viscosity and elasticity of both Newtonian and non-Newtonian fluids.
ΘΚΠ
the world > matter > physics > mechanics > force > stress or force exerted and tending to deform > [noun] > alteration of form or dimensions caused by stress > sheet > change of viscosity in fluids > instrument measuring shearing stress
rheogoniometer1946
1946 Nature 2 Nov. 614/2 The practical application of the Weissenberg rheogoniometer.
1949 K. Weissenberg in Princ. Rheol. Measurement (Brit. Rheologists' Club) iii. 39 It has therefore become necessary to design a new instrument, termed Rheogoniometer, which measures the macroscopically observable forces and displacements in a sufficiently comprehensive manner.
1974 Physics Bull. Jan. 20/2 The ‘rheogoniometer’..allowed for the first time the movements and forces in flowing fluids to be measured as functions of time and in all three dimensions in space.
1998 Jrnl. Rheol. 42 1479 Two transparent parallel disks of Plexiglas mounted on a R-18 Weissenberg rheogoniometer.
Derivatives
ˌrheogoniˈometry n. the practice or technique of using a rheogoniometer.
ΚΠ
1958 A. Jobling & J. E. Roberts in F. R. Eirich Rheology II. 504 Prior to the development of the principles and methods of rheogoniometry, it had been customary to consider the relation between the forces.
1998 New Scientist 21 Feb. 90/1 (advt.) The project includes a variety of biophysical and biochemical techniques, including rheogoniometry.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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n.1946