no electricity Archives – The Green Optimistic green tech news, since 2008 Tue, 14 Jun 2016 05:21:43 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Eco Cooler – No Electricity DIY Air Conditioner Made from Plastic Bottles https://www.greenoptimistic.com/eco-cooler-no-electricity-airconditioning-plastic-bottles-20160613/ https://www.greenoptimistic.com/eco-cooler-no-electricity-airconditioning-plastic-bottles-20160613/#comments Mon, 13 Jun 2016 20:05:56 +0000 https://www.greenoptimistic.com/?p=60080 The Eco Cooler is a revolutionary DIY air conditioning system, which is made from recycled plastic bottles and needs no electricity. Summer is finally here for most of us in the Northern hemisphere. Jackets go safely in storage, and we all start dreaming of that beach holiday and cocktails. Unfortunately, summer is not so pleasant when […]

The post Eco Cooler – No Electricity DIY Air Conditioner Made from Plastic Bottles appeared first on The Green Optimistic.

]]> https://www.greenoptimistic.com/eco-cooler-no-electricity-airconditioning-plastic-bottles-20160613/feed/ 5 60080 Einstein’s Refrigerator Using No Electricity/No Freon Revived at Oxford https://www.greenoptimistic.com/einstein-refrigerator/ https://www.greenoptimistic.com/einstein-refrigerator/#comments Sun, 21 Sep 2008 10:37:34 +0000 https://www.greenoptimistic.com/?p=909 It seems like Einstein did his best not only in quantum physics, but also in classic, immediately-helpful science. Back in the 1930's, helped by his friend Leo Szilard, he invented a refrigerator that used no electricity at all. Scientists from Oxford are struggling to revive his invention today.

The post Einstein’s Refrigerator Using No Electricity/No Freon Revived at Oxford appeared first on The Green Optimistic.

]]> https://www.greenoptimistic.com/einstein-refrigerator/feed/ 17 909