مصدر طاقة متعدد الجهد والتيار

To understand relationship between mass and volume. Set consists of 9 blocks of size one inch. Each block is made of a different material, including Oak, Pine and three different types of Plastic, Aluminum, Copper, Steel and Brass. With instruction manual.

To demonstrate the inverse relationship between density and length. The Aluminium, Copper, Nylon, PVC and Polyethylene specimens are all 12 mm in diameter with 15 gm mass. Lengths range from 15 to 100 mm. Instructions are included.