Description
The bell jar (named for its shape) and vacuum plate are supplied with a battery-operated electric ringer
displays polarity with a plus/minus indicator
mirrors) turn the same tank into a platform for broader light-behavior investigations
All-in-One Kit: Includes a variable laser ray box
Grounding Plate Sensors & Data Collection The bell jar (named forThe Grounding Plate is designed to be used with the E Field Detector in order to prevent stray charges from causing a false reading.