system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do LED bulbs cause image tracking/persistence in vision?

I recently changed from G9 Halogen bulbs to LED in my sitting room. (2 x 5-bulb fixtures)

I've noticed significant image tracking/persistence in the room since the change - for example, when I wave my hand in front of my face I can see extra instances of my hand along the trail of movement.

A similar effect is created when I wave my hand in front of a computer or TV screen.

This doesn't seem to happen under the halogen light or in daylight.

What causes this effect and why does the type of light make a difference?
gpt
LEDs or your monitor are like stroboscopes, they don't give a constant light, but blink really fast to give the perception of constant lighting.

The still images you see are like what you see on the dance floor in clubs, the subject is iluminated for a very short time, creating a still image like a camera.