In order to determine the rotation speed of a turntable platter it is necessary to acquire a stroboscope disc. Some platters have strobe indicators printed on the side or in the center. If your country's AC mains electricity is 60Hz, the stroboscope must be made for that frequency.
Jicama, also known as yam bean, is a round, fleshy taproot vegetable of bean family plants. Its underground starchy root is one of the popular edible tuber-vegetables grown in many parts of Central American, South Asian, Caribbean, and some Andean South American regions.
Jicama is a perennial vine, growing vigorously under semitropical and tropical climates. It has similar growth characteristics as that of lima bean or any other bean species plant. The most distinguishing feature, however, is that it bears globular, fleshy, turnip-like starchy edible root below the ground surface.