Giant Marble Harvests Energy from Sun and Moon
It looks like a giant, glass marble. But this globe is no game. It’s a sun-tracking, solar energy concentrator.
This sun-tracking glass globe is able to concentrate sunlight and moonlight up to 10,000 times and that the system is 35 percent more efficient than traditional photovoltaic designs that track the sun.
(via heathernicolezilla)
If a small satellite tv dish covered in 1 in. x 1 in. mirrors can set a graham cracker on fire in less than three...
Oh, hey, I’m studying these in class right now.
And then make sure some greedy mayor doesn’t steel it.
haha mana