In this paper, we recover a forgotten apparatus invented by the Spanish physicist T. Escriche. The interest resides in the demonstration of the relation between the period of a pendulum and the gravity acceleration through his “pendulum of variable acceleration.”

This content is only available via PDF.
AAPT members receive access to The Physics Teacher and the American Journal of Physics as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.