How Does a Thermometer Measure Temperature?

Educational feature image showing different types of thermometers arranged side by side, including a digital thermometer, an infrared forehead thermometer aimed at a person’s forehead, a glass mercury-style thermometer, a laboratory thermometer in a beaker of blue liquid, and a wooden weather thermometer, with blue-to-orange temperature-themed background elements and heat/cold icons.

A thermometer is a simple but very useful tool. We use it to check body temperature, weather temperature, water temperature, food temperature, and even machine temperature. But have you ever wondered how a thermometer actually measures temperature? A thermometer works by detecting how hot or cold something is. It does this by using materials that … Read more

How Vacuum Flask keeps the liquid hot or cold?

Picture of Vacuum Flask Bottle

A vacuum flask is an insulated bottle which helps to keep the liquid inside it at the same temperature at which it was added for an extended period of time.  Also known as Thermos, it works by minimizing the heat transfer between the inside and outside environment. Sir James Dewar, a Scottish scientist, invented the … Read more