| • निर्वात लैंप • निर्वात लैम्प | |
| vacuum: निर्वात शून्य | |
| lamp: लैम्प कंदील चिराग़ | |
vacuum lamp मीनिंग इन हिंदी
vacuum lamp उदाहरण वाक्य
उदाहरण वाक्य
- On 17 January 1879 this lecture was successfully repeated with the lamp shown in actual operation; Swan had solved the problem of incandescent electric lighting by means of a vacuum lamp.