INVENTIONS
THE POT-IN-POT REFRIGERATOR

THE POT-IN-POT
REFRIGERATOR
• The pot-in-pot refrigerator, also known as Zeer in Arabic, is a way of keeping cool without electricity by using evaporative cooling.
• It is constructed by placing a clay pot withing a larger clay pot with wet sand in between and a wet cloth on top .
• As the water evaporates, there is a drop in temperature.
The food stored in the inner container cools so it can be kept fresh for much longer in a hot, dry climate.
• Mohammed Bah Abba invented the device in 1995 and was awarded a Rolex Laureate (Rolex Awards for
Enterprise) in 2000 for this ingenious technique.

MAKE YOUR OWN FRIDGE (ZEER)
LINK:http://www.happyselfsufficient.com/Green-Energy/make-yourown-fridge-zeer.html

CHINDOGU INVENTIONS
What is a chindogu? "Dogu" is the Japanese word for tool and "chin" might be best translated as "really weird ."
Basically, it ’ s a tool that doesn't quite improve our lives but it ’ s fun to look at because it's really weird. It ’ s just a fanciful invention of questionable utility.
Let ’ s see some examples. Try to describe them and guess what they might be used for.

BUTTER STICK

FOOD COOLER

BACKSCRATCHER T-SHIRT

PORTABLE TOOTHBRUSH

UMBRELLA SHOES

DUSTER SLIPPERS
AND BABY MOP