Abstract: A method for producing nuclear fusion in a fusion chamber, comprising the steps of: (a) Obtaining cooled high velocity nuclear particles; (b) Causing said particles to impact a target, and (c) Harvesting the energy thereby released.

Abstract: The present invention relates to a solar heater for heating a fluid which is constituted by a frame, a bottom plate, partitions, an upper plate of a transparent material, an inlet and an outlet for the fluid. The bottom plate is preferably made of a blackened material, e.g. metal, plastic, whereas the upper plate is preferably made of glass, perspex or P.V.C. A modification comprises a concave mirror coated with a reflecting material and covered with a transparent plate into which a unit of the above solar heater is inserted. The invention relates also to a system comprising several units of solar heaters.