Mark Setteducati is a magician and artist who uses principles of mathematics and illusions in the toys and puzzles he invents. He's also a founder of the Gathering For Gardner, a biennial celebration of the life of mathematician and writer Martin Gardner. Here he talks about how math and magic influence him as an inventor.
The patents for many of Mark's clever inventions can be found here.
Ralph Baer is often called the father of video games. His invention, the Magnavox Odyssey, was the first home console system. Last year he celebrated his 90th birthday the same year the Odyssey turned 40. Here he talks about those early days of video game history and why now, at 90 years old, he's still inventing.
You can see the original patent for the Magnavox Odyssey here.