Question: the natural frequency of oscillation of the balance wheel in...
The natural frequency of oscillation of the balance
wheel in a watch depends on the moment of inertia of the wheel and
the spring constant of the (torsional) hairspring. A temperature
rise results in a reduced spring constant, which lowers the
oscillation frequency. Propose a compensating means for this
effect. Non-temperature-sensitive hairspring material is not an
(Q 2.10 in book Measurement system by Ernes O. Doeblin)