From StarTalk.

What is a knot? Neil deGrasse Tyson and comedian Chuck Nice break down how we measure nautical speed. Learn about latitude and longitude and whether aliens know about the prime meridian. How has ocean navigation changed since the age of the pirates?

Timestamps:
00:00 – Introduction: Knots
00:38 – Latitude & Longitude
03:15 – Dividing Longitude Into Arcminutes
07:34 – Airspeed & GPS
8:14 – Closing: What is a Knot?

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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