PIRA Classification: 7D50.46
Description: Two pairs of cork balls (representing 2H) are placed on a balance and the mass is noted. Four cork balls (representing 4He) are then placed on the scale. The mass is slightly less. This is a prop, as the cork pairs are weighted slightly more than the group of 4.
Special Instructions: None
Condition: Ok
Setup time: 1 minute
Safety Issues: None