Combo circuit demonstration video, various formats

Crude but effective high-def 1080p video from today's lecture demonstration is now up. First up: the series of two light bulbs. You can view the YouTube version here or the higher quality version in iTunes U.

1. "Demonstrations" which holds the larger format video, or
2. "Demonstrations-mobile" which contain the smaller file "mobile" version, which might be faster if you are on iPhone.