The paper proves the bases of design plan of optics, circuit and structure, method for temperature standard fixing. The ope ration results show that the performance of the instrument g...

Unfortunately, the standard definition of a second relies on what the atom does at a temperature of absolute zero. Real clocks need to run at room temperature, where the shell of electrons puffs up.

Standard temperature observations are made in thermometer shelters about 5 feet above the ground.