We have collected some videos which describes the working of some engineering technologies in simple words.

1. How the train stays on the wheels



2. Helicopter Physics



3. The 10,000 Domino Computer



4. Watch Movements: “How a Watch Works”



5. Hydraulic Steering Principles of Operation



6. Building a liquid crystal display (LCD)



Feel free to mention if you have watched videos which could fit here.

h/t https://www.reddit.com/r/engineering/comments/473yo2/general_whats_the_best_30_minute_video_youve_ever/