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. Officials of the ...

This story is from February 10, 2020 Corpn replaces 45,000 sodium vapour lamps with LED lamps TNN / Feb 10, 2020, 04:49 IST Follow us ...

Sodium vapour lamps to be a thing of the past in Bengaluru as project to replace them with LED bulbs takes off Currently, the electricity bill for street lights in the city is a whopping ₹25 ...

Coimbatore: The city corporation has changed around 10,000 sodium vapour street lamps to LED lamps in the last one month. As on August 15, the civic body had changed about 9,973 lamps across the city.

Now, the BEST Undertaking will soon be procuring two different kinds of sodium vapour streetlamps — of 250 watts and 70 watts capacity — to illuminate roads, flyovers and bylanes.

But it took five more years to learn how to actually produce it so that a lamp could be made. Discharge lamps make light by passing an electrical current through a gas, in this case sodium vapor. The ...

Read more belowJamshedpur Utilities and Services Company (Jusco) has decided to replace the sodium vapour lamps on all the major thoroughfares with metal allied lamps in the days to come. The town ...

For almost two generations of Chicagoans, orange has been the color of night. High pressure sodium vapor lights, which create a glow reminiscent of a tire fire, have lit Chicago since the 1970s. Th… ...

News Published: 09 December 1933 Yellow Sodium Light for Detecting Colourless Details Nature 132, 890 (1933) Cite this article ...