Analytical relations determining reaction of the torsion balance to the ponderomotive action of light radiation pulses are presented. Development of the most sensible and precise standard comparator which realizes `the link-up' of units of fore in mechanics and optics is expedient to make around such a balance.
O. V. Karagioz,
Andrei Fedorovich Kotyuk,
V. P. Izmailov,
"Torsion balance as a heart of standard", Proc. SPIE 4018, Optoelectronic Metrology, (13 December 1999); doi: 10.1117/12.373733; https://doi.org/10.1117/12.373733