The thermometer has a small bulb filled with either mercury (in older thermometers) or alcohol (in modern ones). When the temperature rises, the liquid expands and moves up the narrow tube.

It’s 3 a.m. Your two-year-old is crying. Her forehead is hot and you fear she’s running a fever. You rush to get a thermometer. You grab one, but in your haste, you drop it. It breaks, … ...

Another advantage of alcohol is that the freezing temperature of mercury is around -38F, so a mercury thermometer is not useful in extremely cold weather.

Clinical Thermometer Analog or Digital. A clinical thermometer can be either digital or analog. Digital clinical thermometers are more commonly used today compared to analog ones. Analog thermometers ...

The mercury thermometer consists of a bulb from which a thin glass tube extends, and inside which is the metal mercury. The volume of this metal inside the tube is less than the volume of the bulb.

Thermometers have been useful for temperature measurement for a long time. A digital thermometer is an electronic device used for accurate temperature measurement. Unlike traditional analog ...

It was that stuff you never really got to know till the thermometer broke. Then, if you were lucky enough to catch it, you could play with it. Just one thermometer’s worth wasn’t enough for much fun.A ...