A solar water heater: a mirrored parabolic dish that focuses sunlight to a point, copper tubing that runs a thin stream of water through the very hot focal point, creating near-boiling water on-demand.
Defense Against the Dark Arts - Professor Genevieve Tyrell. Once a player for the dark side, Genevieve had a experience that made her switch back to the good side. She doesn't talk about it, instead she teachers her students to defend themselves against dark magic.
Chocolate Glaze (Glaçage au Chocolat), here for "Ambroisie" entremet by Hidemi Sugino. This is his most famous cake that won him a pastry championship and it is also the cover of his book. Click for the recipe. (for the glaze, boil water, sugar, cocoa and heavy cream then off heat add gelatin).
This is a salt tower growing in the Nevada desert. Pioneered by MIT, this tower solved a fundamental problem with solar power -- what do you do at night when there is no sun? This tower is filled with salt and mirrors pointing the sun at it cause the salt to melt to liquid at 1000s of degrees. This hot salt boils water making steam for generators and at night the molten salt retains enough heat to keep boiling water til the sun comes up again. This elegant solution makes best use of the sun.
Mirror Glaze Recipe: 20 g Gelatin Powder 120 g Water 300 g Corn Syrup/Glucose 300 g Sugar 150 g Water 200 g Sweetened Cond Milk 300 g Chocolate (White, Milk, Dark or a combination) Food Coloring Bloom the gelatin in the water. Boil the glucose, sugar & water. Remove from heat and add the gelatin. Add the cond milk. Pour over chocolate and immersion blend/buerre mix to remove air bubbles. Use at 35C/95F The marbling effect is with different color glazes poured together over the cake.