A smart watch uses a green LED to measure a person's pulse by shining green light into the red blood in the person's wrist - Junior Cycle Science - Question e - 2019

One significant technological application of physics used in everyday life is the microwave oven.

Description of the Application

Microwave ovens utilize microwave radiation, a form of electromagnetic radiation, to heat food. When the microwave is turned on, it generates microwaves that excite water molecules in the food, causing them to vibrate and produce heat. This process cooks the food from the inside out.

Importance

The microwave oven has revolutionized the way we cook, allowing for quick and efficient meal preparation. Its convenience in reheating leftovers or cooking meals in a fraction of the time compared to conventional cooking methods emphasizes the significant impact of physics in modern technology.