19: ...Charles Babbage

Charles Babbage designed one of the first computers but never lived to see it built. Here's a demo of one of the two in the world that work. This one is at the Computer History Museum in Mountain View, California, USA, and here they fire it up (well, crank it up) and explain a bit about it.

17: ...Liquid Crystal Display (LCD)

Isaac is back in the pilot seat this week to give an overview of the LCD. A display with a universal impact.

16: ...Bob Ross

One man, one canvas, no backdrop. Public television would never be the same. Bob Ross was a man of positivity and joy that inspires and calms world wide. Listen in as we gush over the Mister Rogers of paint.

MP3 version now available! http://to.pbs.org/pbsremixed If you like this, support your local PBS station: http://www.pbs.org/donate Bob Ross remixed by Symphony of Science's John D. Boswell for PBS Digital Studios. This is the second in a series of PBS icons remixed, subscribe to be the first to know about new remixes.

15: ...Harold Nathan (Von) Braunhut

X-Ray Specs! Invisible Goldfish! Sea-Monkeys! This week we discuss the showman that brought joy to children since the 60's.