glass jar over a lit candle on a non-˚ammable plate. 2. Lower glass until 1” away from table (caution! Glass may become hot). B. Limiting fuel – Remove the fuel leg of the ˜re triangle by placing a piece of aluminum foil between the ˚ame and the wax of the candle – removing the fuel by separating the wax from the wick.
The first paragraph is drawn from material developed by Franklin B. Lee in “Experiments in High Vacuum” (Morris and Lee, Buffalo, NY, ca. 1960) and is used with permission. It must be noted that Franklin’s explanation of the operation of the radiometer, while the popular explanation, is not correct.