Hine Takurua appears on light sensitive wall as the challenge is being completed.
As students refract and reflect light onto the wall screen, Hine Takurua will gradually appear becoming more bright and clear the more light is reflected onto the end wall.
A solar bowl is a type of solar thermal collector that operates similarly to a parabolic dish, but instead of using a tracking parabolic mirror with a fixed receiver, it has a fixed spherical mirror with a tracking receiver.
A fixed parabolic mirror creates a variously shaped image of the sun as it moves across the sky. Only when the mirror is pointed directly at the sun does the light focus on one point. That is why parabolic dish systems track the sun. A fixed spherical mirror focuses the light in the same place independent of the sun's position.
Concentrator photovoltaics (CPV) (also known as concentration photovoltaics) is a photovoltaictechnology that generates electricity from sunlight. Unlike conventional photovoltaic systems, it uses lenses or curved mirrors to focus sunlight onto small, highly efficient, multi-junction (MJ) solar cells.