faraday dark space मीनिंग इन हिंदी

उदाहरण वाक्य

1. This came to be called the " cathode dark space ", " Faraday dark space " or " Crookes dark space ".
2. Crookes found that as he pumped more air out of the tubes, the Faraday dark space spread down the tube from the cathode toward the anode, until the tube was totally dark.