Before revision: Resonators MaterialQ-factorNickel several 100George, col.1.Steel several 1000Aluminium ~10, 000Nickel-iron alloy 10,000 to 25,000 depending on composition It is possible to achieve an extremely high Q with mechanical resonators.
After revision: Resonators Material -factor Nickel several 100 Steel several 1000 Aluminium ~10, 000 Nickel-iron alloy 10,000 to 25,000 depending on composition It is possible to achieve an extremely high with mechanical resonators.