Abstract
A thermally regulating stage was constructed for a microscopic in-situ observation of the crystals growing around room-temperature. Most of the similar apparatuses so far made utilized the circulation of thermostatically regulated water to stabilize the temperature, A copper block is used for a heat-medium in the present apparatus, and a high thermal stability was realized by securing a constant thermal gradient in the metal block. In order to detect a small thermal fluctuation, a thermistor is used, and the heat produced by the collector-loss of two power-transistors is used to regulate the temperature. A thermal fluctuation within 1/100 degree for at least 15 minutes is achieved in the growth cell filled with a given liquid.
