This set contains two drilled balls each of the following materials: aluminum, brass, cork, lead, steel, and wood. These are perfect for pendulum experiments but can be used for a variety of lab needs. Plastic case with foam insert. 25mm in diameter. Total of 12 balls.
This radiometer comprises a partly evacuated glass bulb about 70mm in Diameter mounted on a round base, containing at its centre a fine pivot which supports four light weight metal arms. One side of each vane is blackened , the reverse side is bright. When the light strikes the wings, it transfers the heat to each one, but not at the same degree.
