The patent of the invention relates to a teaching instrument, in particular to a novel lunar origin demonstrator which solves the problem of no visual and visual teaching aids demonstration moon phasecauses and the original
projector waste resources re-use; the instrument comprises a box body, a
control switch arranged on the box body, a power socket, a heat dissipation fan arranged inside the box body, a reflecting bowl, a 300W
bromine-
tungsten lamp and a
transformer; the original
projector screw condenser can obtain parallel light by lowering the height of the condenser; heat insulation with thick glass liner under it; a movable
plane mirror is arranged above the movable bracket, and the movable bracket is used for fixing the movable bracket, so that the strong light is reflected to theearth-moon model; a folding cover plate is hinged on the right side of the box body; a ground-moon model turntable is arranged on the cover plate, and is driven by a small decelerating motor on the back; and a convex lens and a small
plane mirror are arranged in the space of the
earth model, so that the moon phase can be imaged on the round
ground glass; a video head is arranged above the groundglass, and the computer
multimedia is connected with the data line, and the lifting knob is adjusted, so that the
panorama of the earth-moon model or the close-up of the moon phase can be projected onthe screen.