by TECHSTAR on JUNE 11, 2013 - 1 Comment in SOLAR
“You wanna take a look?” goes Mifune Japanese Restaurant’s teaser on its website. “Feel free to ask our waitresses to have a look in our back kitchen! Picture-taking is allowed. School classes, students, (and) researchers are welcome…. ”
The attraction? Three 1.5-liter plastic soft-drink bottles, filled with water and a little bleach, poke out of the restaurant’s back kitchen roof, illuminating the whole room without using electricity from morning till sundown.
The not-so-secret ingredient: The upper-half part of each plastic bottle juts out above the restaurant’s metal roof and catches sun light; the water’s refractive property then disperses the light 360 degrees inside the restaurant’s back kitchen, (more…)