MIT students develop solar dish hot enough to melt steel

The results are staggering – the completed mirror focuses enough solar energy at its focal point to melt solid steel. The energy of typical sunlight is concentrated by a factor of 1,000. This was showcased during a demonstration, in which a team member held up a board, which instantly and violently combusted, when brought within range of the focal point.

By directing the dish at a more practical target – water piped through black tubing – steam can be flash created, offering instant means of producing energy or providing heating.