Temperature range The basic Galileo thermometer offers a temperature range from 64 to 80 degrees. These will feature five bulbs in increments of four degrees.

Temperature range The basic Galileo thermometer offers a temperature range from 64 to 80 degrees. These will feature five bulbs in increments of four degrees.

Thermometers measure temperature. The first known accurate thermometer was invented about 350 years ago. In this activity, you will be building and calibrating your own bulb thermometer. Make your ...

Red, yellow, green and blue are standard, but some may feature bolder shades or even pastel colors. For those seeking a modern look, opt for a thermometer that features black liquid in every bulb.

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.

You can also use an instant-read meat thermometer. To check the temperature of a refrigerator, it's best to use food or liquid that has been in the compartment for at least 24 hours.

The thermometers could be adapted for a particular temperature range by changing the make-up of the liquid. Rogers and colleagues chose an ammonium-based liquid for general applications, as it is ...

26 March 2008 Poisonous mercury in thermometers has been replaced by harmless and better performing ionic liquids in research by scientists from Europe and the US, published in the Royal Society of ...

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.