Have you ever seen an image where people, animals, or machines appear in bright colors such as red, orange, yellow, blue, and purple—even in complete darkness? That is called thermal imaging. Thermal imaging allows us to “see” heat. Instead of detecting visible light like an ordinary camera, a thermal camera detects a type of electromagnetic … Read more
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
Every food label, diet plan, and fitness app talks about calories. But what exactly is a calorie? Is it something in food? Is it good or bad? And why does our body need it at all? A Simple Definition: What Is a Calorie? A calorie is a unit of energy. In scientific terms, one calorie … Read more
A microwave oven is useful device that helps in cooking delicious food for us. Have you wonder how it works? A microwave oven works by using microwave radiation to heat food quickly and efficiently. Microwave radiation As the name implies, it uses microwaves radiation to heat food. Microwave radiation is a type of electromagnetic radiation … Read more
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