By the way, why not using LED's instead of promoting fluorescent lamps (article Scientific American). I bought for about 30 euros a Lantern with 36 LEDSs that you can charge with a wind-up : 5 minutes of speedy winding-up give more than 1 hour of enough lighting for a room. I use it to read before sleeping.
An article in Scientific American says "The students point out in their blog (which was closed to the public earlier this month due to complaints from some of Rwanda's ministers) that ..."
By the way, why not using LED's instead of promoting fluorescent lamps (article Scientific American). I bought for about 30 euros a Lantern with 36 LEDSs that you can charge with a wind-up : 5 minutes of speedy winding-up give more than 1 hour of enough lighting for a room. I use it to read before sleeping.
Newtoon 3 years ago
An article in Scientific American says "The students point out in their blog (which was closed to the public earlier this month due to complaints from some of Rwanda's ministers) that ..."
Newtoon 3 years ago
how can i access your blog?
thanks
ashram1234 3 years ago