Question

These glasses will help to detect the body temperature of the person who is at least 1mtr away from you.When you will wear this glass if the person around you have not a normal body temperature it will change its colour to red and we will know that we have to stay away from that person .This will protect us and prevent the spread of the COVID-19 and other infections

Answer 1

Answer:

It has a bulb at one end. This bulb contains mercury. Outside the bulb, a small shining thread of mercury can be seen. If you do not see the mercury thread, rotate ...