Safety Warnings
This demonstration uses 120 VAC household current, which can cause serious injury or death. Never touch the pickle, electrodes, or any metal parts while power is applied. Always use insulated alligator clips and ensure all connections are secure before applying power. Use a switched outlet to control power remotely.
If the nail tips touch inside the pickle, a direct short circuit will occur, potentially tripping the breaker, damaging the outlet, or causing sparks and fire. Carefully measure and verify electrode spacing before connecting power. If uncertain, use a multimeter to check resistance (should be >100 ohms).
The pickle and electrodes become extremely hot during operation (>100°C). Steam and hot brine may be expelled. Allow at least 10 minutes cooling time before handling. Use caution when disconnecting as metal components retain heat.
The demonstration produces smoke and a strong smell of cooked pickle, along with possible traces of sodium hydroxide aerosol. Perform in a well-ventilated area or use a fume hood. Open doors or windows to allow air circulation during and after the demonstration.
This demonstration involves potentially lethal voltage. Review electrical safety protocols with any assistants. Ensure students remain at a safe distance (minimum 3 feet) from the setup. Never allow students to touch any part of the apparatus while energized. Have a clearly marked emergency shutoff switch accessible.
Purpose
AC current passed through a pickle causes it to buzz and glow bright yellow. Students see ionic conduction in action and observe the characteristic sodium D-line emission (589 nm) produced by excited sodium atoms in the brine.
