Sonar

Sonar

Maybe another way to say it is, that we're not bats, and we don't use sonar.

Another well studied sound are echolocation clicks.

And that's what the topic of the talk is today.

This is a picture from 2006, shortly before his death.

If it comes back at a lower pitch, it's because it's moving away from you.

Here's a second example of human echo location or human sonar.

The relationship between the first two notes is the same as the second two and so forth.

So without further ado, Michael Linville, the director of chamber music at the New World Symphony, will perform the world premiere of the perfect ping.

Unfortunately, he died 10 years before Costas solved the problem of how you can mathematically create these structures.

And we're over the Atlantic that's the ridge right there but we're going to go across the Caribbean, Central America, and end up against the Pacific, nine degrees north.

Repetition free, it turns out, is extremely difficult and the only reason that we can actually do it is because of a man who was hunting for submarines.

And if a person gets in the car they are drunk and the car oscillates a great deal, there's a little pendulum that swings up and back and that would pull the car over to the side, not a law, a solution.

So he sent a letter back to John saying it turns out you can generate these patterns using prime number theory.

For example, in oceanography, a lexicon of dolphin language is actually being created by basically visualizing the sonar beams that the dolphins emit.