Here's a question of burning scientific importance: How high can you stack pennies before they fall over?
Have you ever taken a road trip with someone who refuses to make pit stops? It’s a dangerous matter. Learn more on this Moment of Science.
The most important part of a seat belt is the spool’s locking mechanism–a device that makes the belt hold tight in the unfortunate event of a crash. The locking mechanism is activated either by the car’s movement or by the belt’s movement.
If you’ve ever driven in LA, you know that people don’t cooperate terribly well. Traffic jams, folks cutting folks off, people shouting at you out their windows . . . it’s a real headache. We’d all do a lot better–at least, we’d all move through congestion a lot faster–if we were ants. Why ants, you [...]
In most air bags, the sensor triggers chemical reactions that produce nitrogen gas from chemical tablets stored in the unit. The gas whooshes into the bag and inflates it in only a few milliseconds.