Jacques S. Abramowicz: 4 different ways you can power a car

4 different ways you can power a car

In a dark cave, bats can't see much. But even with their eyes shut, they can navigate rocky topography at incredible speeds. This is because bats aren't just guided by their eyes, but rather, by their ears. It may seem impossible to see with sound, but bats, naval officers, and doctors do it all the time. How is that possible? Jacques S. Abramowicz digs into the unique properties of ultrasound. [Directed by Sofia Pashaei, narrated by Addison Anderson, music by Jarrett Farkas].

Bats effortlessly navigate pitch-black caves by using sound instead of sight, emitting high-frequency ultrasound to map their surroundings. Inspired by this natural sonar, people developed ultrasound technology, first for detecting submarines and later for peering inside the human body. Medical ultrasound now reveals details from fetal development to tiny tumors, using sound waves up to ten million hertz. This non-invasive tool gives doctors a safe and portable way to visualize the hidden workings of the body.