Demonstration device for physical experiments - uses projection of the test unit and demonstrates resulting values for freely falling bodies

摘要

Physical experiments are carrie dout with real test components placed between two completely transparent plates or housings, provided with graphic representation of test characteristics (e.g. expected object movement, slopes etc.) of a size suitable for daylight projection. Picksups at characteristic points are connected, possibly through corresponding convertors, to a display unit near to the experimental device, especially a digital liquid crystal unit. In the upper part of the transparent housing (17) are fixed two iron cores (20) and are associated with them, coils for the magnetic fixation of the falling bodies. Immediately beneath each iron core, conical dished recesses (22) are situated.