How does the rays of the sun reflect

There seems to be an widespread confusion about how solar rays reflect in an cone. If sun rays was like water, it is easy to believe they would "fall" down the tube and end up at the bottom of it. This is certainly not the case. Sun rays reflect on a surface (generelly) with the incomming angel equal to the outgoing. To understand what I mean take a look at the pictures below. This has some very strange consequences, and some of these are very important for us constructing solar cookers. The rays of the sun will eventually bounce back if the cone is too long. This does not hold true only to very wide cones as someone might belive. It is also true to very very steep cones. In other words in nearly any cone, the rays will eventually bonce back if the cone is long enough. Does this affect your solar cooker. Taka a look at the examples here and figure out. Good luck!

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