Open type model on vertical well polished wooden base very superior quality.
A newly introduced apparatus for the demonstration of waves. Made of flat steel wire about 6.5cm dia. and 7.5kcm long.
KUNDT’S TUBE: Most improved form consists of metal frame with two brackets with the help of which it can be clamped on the table. The Borosil glass tube is held in position in two sockets. Through one end a tight piston is introduced and through the other a loose one.The Test rod can be clamped rigidly at its center and the outer length is rubbed with a leather piece on which resin powder is put. The glass tube is one meter long.