enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   A high-pressure sodium street light in Toronto A high-pressure sodium-vapor lamp An HPS lamp that isn't entirely off. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure, and high pressure.

3. NEMA wattage label - Wikipedia

   en.wikipedia.org/wiki/NEMA_wattage_label

   A yellow sticker indicates the lamp is a sodium vapor lamp (HPS/LPS). A blue sticker indicates the lamp is mercury vapor (MV). A red sticker indicates the lamp is metal halide (MH). A sticker that is half-red and half-white indicates a pulse start metal halide lamp (PSMH). Green is also used on HPS units in Canada.

4. Area codes 905, 289, 365, and 742 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_905,_289,_365...

   The numbering plan area surrounds the city of Toronto (area codes 416/647/437), leading locals to refer to the primarily suburban cities surrounding Toronto as "the 905" or "905 belt". It is bound by the 519/226/548/382 overlay area in the west, 705/249/683 in the north, 613/343/753 in the east, and Western New York State's 716/624 area on the ...

5. Gas-discharge lamp - Wikipedia

   en.wikipedia.org/wiki/Gas-discharge_lamp

   [1] [2] They include the sodium-vapor lamp that is the gas-discharge lamp in street lighting. [ 3 ] [ 4 ] [ 1 ] [ 2 ] In operation, some of the electrons are forced to leave the atoms of the gas near the anode by the electric field applied between the two electrodes, leaving these atoms positively ionized .

6. Sodium-vapour lamp - Wikipedia

   en.wikipedia.org/?title=Sodium-vapour_lamp&...

   Language links are at the top of the page. Search. Search

7. Area codes 416, 647, and 437 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_416,_647,_and_437

   A new overlay area code, 437, started operation on March 25, 2013. [6] [7] That effectively allocates 24 million numbers to a city of 2.5 million people. Area code 942 is scheduled for addition to the 416/647/437 overlay on April 26, 2025. [8] Area code 387 has been reserved for Toronto's future use.

8. High pressure sodium lamp - Wikipedia

   en.wikipedia.org/?title=High_pressure_sodium...

   To a section: This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{R to anchor}} instead.

9. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   Varieties of HID lamp include: Mercury-vapor lamps; Metal-halide (MH) lamps; Ceramic MH lamps; Sodium-vapor lamps; Xenon short-arc lamps; The light-producing element of these lamp types is a well-stabilized arc discharge contained within a refractory envelope arc tube with wall loading in excess of 3 watts per square centimetre (19 W/in 2).