首頁
>
影音專區
>
ISOTECH
>
Introduction to the Mercury Triple Point
Introduction to the Mercury Triple Point
What is a fixed point?
Fixed points rely on the constant temperature when a pure substance changes phase. For example, the triple point of mercury is defined as -38.8433 °C. The triple point can be realised and maintained for long periods during which the test thermometers can be introduced into the fixed point cell.