lenard tube मीनिंग इन हिंदी

उदाहरण वाक्य

1. He carefully constructed a black cardboard covering similar to the one he had used on the Lenard tube.
2. He built a Crookes tube ( later called a " Lenard tube " ) with a " window " in the end made of thin aluminum, facing the cathode so the cathode rays would strike it.