Beschrijving "Water-powered clock" kit
Electrical devices need either batteries or a power plug – sounds logical. But what if you could power your devices with water? The "Water-powered clock" kit lets you explore this seemingly absurd idea at first glance and build a digital clock that actually works without batteries and a power plug!
The kit includes all the necessary components and a detailed manual that also contains some experiments. Without giving too much away: The water can also be replaced by other liquids!
