Artificial light source for use in closed laboratories for the trainers ET 250, HL 313, HL 314, HL 320.03 or HL 320.04 Features - light source comprising halogen lamps - reproducible test conditions for trainers on solar energy Learning objectives/experiments Specification [1] artificial light source, comprising 2 vertical rows of 4 halogen lamps [2] halogen lamps with adjustable inclination angle