NEMA’s sodium vapor high-intensity discharge (HID) lamps shipment index declined for the fourth consecutive quarter on a year-over-year basis, retreating 15.8% during Q2 2011. The index value of 77.7 ...

Chennai Corporation has replaced the sodium vapour high-mast lamps at the Pantheon Road junction near the Police Commissioner's Office with the energy-efficient induction lamps.

BBMP replaces sodium vapour lamps with LED lights to save energy and reduce electricity bills in Bengaluru.

The bland orange-yellow of sodium-vapor lamps now lights hundreds of miles of U. S. highway. Until recently it has been a ticklish and costly job to get the sodium into the highly evacuated lamps ...

In 1932 a collaboration of General Electric Company of England (GEC), Philips in the Netherlands, and Osram in Germany introduced a discharge lamp that used low-pressure sodium vapor.

Coimbatore: The city corporation has replaced close to 45,000 sodium vapour street lamps with LED lamps in the last seven months and is expected to ch.

Coimbatore: The city corporation has changed around 10,000 sodium vapour street lamps to LED lamps in the last one month.

In Schenectady, General Electric installed 22 of its own sodium vapor lamps on a section of the Balltown Road, watched startled motorists gape at the lights as they sped down the saffron-colored ...

The move to replace sodium vapour lamps on Marine Drive with LED lights faced a lot of political backlash, and BEST eventually went back to the regular golden lamps.