Building a thermometer is a matter of precise technology—putting just the right amount of mercury into a specially designed glass tube, for instance—but determining which numbers to use on the ...

Let’s explore some of the most common ones. The classic thermometer with a thin glass tube and a red or silver liquid inside is called a liquid-in-glass thermometer. These use the principle of ...

Boiling tube A slightly larger glass test tube. Used to heat substances over a Bunsen burner. Thermometer A device that measures temperature. Funnel A tube that is wide at one end and narrow at ...