Officials of the Corporation said the two sodium vapour lamps in each of the 12 fittings on the high mast have been replaced with one induction lamp on Friday.

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Officials of Zone – 8 (Anna Nagar) of Greater Chennai Corporation have ensured installation of sodium vapour lamps in the centre of a defunct high mast lamp at SIDCO Nagar bus stop, near the ...

The study has explained the faint glow of the moon, which ISRO described as ‘just the colour of light emitted by a sodium vapour lamp’.

Today's low-pressure sodium lamps give close to 200 lpw, the most energy efficient light source commercially available. This lamp was made for street-lighting use by (U.S.) General Electric around ...

A BHEL employee was electrocuted and another injured on Monday afternoon when a sodium vapour lamp fell on a staircase railing.

WHILE demonstrating the interference patterns of various lines by means of a Hilger C.D. instrument in conjunction with a Lummer-Gehrcke plate, a Philips 'Philora' sodium vapour lamp was used to ...

Mercury vapour lamp manufacture unit to be set up in Qatar DUBAI - A new joint-venture project for the manufacture of high pressure mercury vapour and sodium vapour lamps is to be established in ...

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 ...

The biggest disadvantage of LED lamps is that they are at least three times more expensive than the other options. “While a LED lamp will cost three times more than a sodium vapour lamp, it can burn ...

According to Science Service, they stated that for revealing the details of small colourless objects the yellow single colour light from sodium vapour is definitely and markedly better than the ...