Description

It demonstrates the formation of nodes and antinodes by using fine powder (like lycopodium) that gathers at the nodes during resonance. Comprising a glass tube80 cm long and 32 mm in diameter, at one end is a tightly fitting but adjustable cork piston fitted to a metal rod 100 cm long and at the other end, a loose-fitting piston attached to a rod, 100 cm in length and 8 mm dia.