Spring Forward Sunday: Need A Watch? : Citrus Clock
By Rachel Rosmarin , published on March 6, 2009 at 12:50 PM
|
This prototype isn’t for sale, but if you were feeling ambitions, you could build it yourself. A zinc copper plug built into a wooden body oxidizes when it touches the acidity of the lemon juice. This reaction creates electricity. This electricity powers a simple clock mechanism. The lemon will power a clock for about a week, after which you’ll need a new lemon. |
|
Sponsored links
Sponsored links
The lemon powered clock is cool. Reminds me of the lemon powered thinking cap in the hitch-hikers guide to the galaxy.
I remember making something similar in highshool, but it was with coke instead, and it powered our home brew calculator.
That was a good book.
After killing lots of Timex and Casio watches I will stick with suunto watches. At $400 its pricey but its lasted 6 years and counting so its worth it