Public domain photos

The image shows an old book with a drawing of a pendulum on it. The pendulum is composed of several parts, including a globe, a bird, and other objects. There is also some writing on the paper, likely providing further information about the pendulum.

The image shows an old book with a drawing of a pendulum on it. The pendulum is composed of several parts, including a globe, a bird, and other objects. There is also some writing on the paper, likely providing further information about the pendulum.Open in library