Then the frequency can be read from the calibrated readout on the stroboscope. When the frequency of the strobe equals the frequency of the rotating or vibrating object, the object completes one cycle of oscillation and returns to its original position between the flashes of light, so when illuminated by the strobe the object appears stationary. The strobe light is pointed at the rotating object and the frequency adjusted up and down. This is an intense repetitively flashing light ( strobe light) whose frequency can be adjusted with a calibrated timing circuit. Stroboscope Īn old method of measuring the frequency of rotating or vibrating objects is to use a stroboscope. When the unknown frequency is applied to the electromagnet, the reed which is resonant at that frequency will vibrate with large amplitude, visible next to the scale. It consists of a strip of metal with reeds of graduated lengths, vibrated by an electromagnet.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |