TRAINING DEVICE FOR OPTICS Russian patent published in 1997 - IPC

FIELD: training process, physical laboratories. SUBSTANCE: fast diffraction pattern similar to diffraction pattern in parallel rays of singular round hole in opaque screen can be produced in training device by means of mass object of diffraction and used to study dynamics and measure length of light wave. Novelty of proposed training device lies in that it has measurement system for high-accuracy measurement of radii of rings of diffraction pattern which are observed during examination of small filament lamp through glass plate dusted with special substance. Sought-for value is measured with the aid of movable glowing marker-indicator which position is fixed on micrometric scale. EFFECT: higher efficiency. 2 dwg