Mirror galvanometer

Have you ever looked at yourself in a mirror and seen your reflection? A mirror galvanometer is like a mirror that can move very quickly back and forth, and it helps to measure electric current or voltage.

The mirror galvanometer has a tiny mirror mounted on a tiny spring. When electricity flows through the galvanometer, it makes the spring and mirror move back and forth very quickly. When this happens, a light beam shines on the mirror and reflects onto a wall or screen. The movement of the mirror causes the reflection of the light beam to move back and forth too.

Scientists or engineers can use this movement of the light beam to measure how much electricity is flowing, or how much voltage is present in a circuit. It's like using a scale to measure how heavy something is; the mirror galvanometer measures how much electricity is flowing.

So, in short, a mirror galvanometer is a tiny mirror that can quickly move back and forth to help measure the flow of electricity.