sodium vapour lamp meaning in Hindi

Examples

1. This method is used to determine the velocity of ultrasonic waves using monochromatic sources like sodium vapour lamps.
2. The electrical connections of high-pressure sodium vapour lamps, the yellow lamps for street lighting, are made of niobium alloyed with 1 % of zirconium.
3. Consequently, high pressure sodium vapour lamps ( which are still yellowish, but closer to golden white ) are also used, at the cost of greater running expenses and increased light pollution.
4. Meera Bagh is a posh colony, with well-carpeted internal roads, manicured parks and sodium vapour lamps lighting the internal roads at night, Guide Map . it is mainly maintained by RWA'A'Block with Mr . Samir Sethi Dussa as President, www . rwameerabagh . com