chindongu - TeacherMartaB

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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
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