"Hey, that's how I used to play too!" -- everybody
This is a video from Youtube channel Today I Found Out explaining how the original NES Zapper works to shoot ducks in Duck Hunt. It's not the first time I've read or watched a video explaining the surprisingly basic technology, but maybe you haven't -- maybe you've been wondering all these years. Just remember: not all who wonder are lost. "It's wander, not wonder." Huh? "It's WANDER, not WONDER." I'm lost. Just kidding, I know I'm in the men's room on my laptop.
Keep going for the video.
Thanks to DD, who can close his eyes and still hear the springy sound of pulling that NES Zapper trigger.