Review on Ajax Scientific Spare Pith Ball: The Ultimate Solution for Scientific Experiments by Roy Boone

As a physics teacher, I often complain about static electricity blocking. Laboratories are often finicky, especially in warm, humid weather. Cork balls are AWESOME! They transfer the charge from the friction rods very well and hold that charge for a long time. These balls are actually effective for cork ball experiments that use two balls repelling each other. BUT. The price is outrageous. You can easily get a pack of 60 cork balloons for $6 at 10 cents each. That's almost $2 each!