Jumping Ring

Both the old jumping ring and the new jumping ring apparatus.

Jumping Ring demo picture

  • Fluctuating B field causes ring to either 1) jump off of apparatus, or 2) levitate. 
  • For new apparatus (right in top picture): plug into wall and push the switch on the right down to let current flow. For old apparatus (left in top picture): plug Apparatus into variac; turn variac knob to set current amount; flip variac switch to “on” position to produce instantaneous B field.
  • For added excitement, cool rings with LN2 to increase conductivity.

Notes about use

  • For old apparatus: apparatus is pretty old. Iron rods not securely connected to wooden base. Hold onto base and rods, when lifting or transporting.
  • Do not touch apparatus when current is flowing (variac on or switch pressed).
  • Jumping ring apparatus located in L01, section B2. Variac
    located in L01, section A1.