From Wikipeida:
A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity.
zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.
Circle and Square 
Reblogged this on zrehanc and commented:
extremely awesome i loved it