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CHAPTER 33 OUTDOOR LIGHTING CODE
CHAPTER 33 OUTDOOR LIGHTING CODE

Light is productive Enhance operations in industrial facilities
Light is productive Enhance operations in industrial facilities

... —— Because of the age of most refineries and refining operations in North America, the most common light sources are high pressure sodium, metal halide, and fluorescent; significant energy saving opportunities exists for modernization —— Long life sources in both traditional and new lighting technol ...
Photosynthesis Light for Horticulture
Photosynthesis Light for Horticulture

... on average compared to standard HPS PAR performance 250-750W ...
CITY OF GOLETA Light what is intended, not the night sky!
CITY OF GOLETA Light what is intended, not the night sky!

... (LPS), High Pressure Sodium (HPS), and Metal Halide (MH). Other factors should be considered regarding the choice of lamps. The use of MH over HPS, at similar lumen levels, can increase energy costs by almost 40 percent. Also, MH will increase maintenance costs, since lamp life is about 50 percent l ...
Sources of Light Energy Worksheet
Sources of Light Energy Worksheet

... Name:_______________________ Date:_______________________ Class Period:_______________________ ...
LED: Light Emitting Diodes FACTS GUIDE
LED: Light Emitting Diodes FACTS GUIDE

... They are more efficient, durable, versatile and longer lasting. Incandescent and halogen bulbs uses a wire filament that is more sensitive to breakage making their life shorter (1-3 years). They also require more electricity to reach it’s brightness. Compact fluorescents, although last longer than i ...
Evolution LED Wall Pack Series
Evolution LED Wall Pack Series

... metal is heated, the color of light it emits will change. This color begins as red in appearance and graduates to orange, yellow, white, and then blue-white to deeper colors of blue. The temperature of this metal is a physical measure in degrees Kelvin or absolute temperature. While lamps other than ...
Illumination
Illumination

... electron emitting material, which may be small piece of thorium or an oxide mixture. Argon is introduced to help start the lamp. The electric discharge first takes place through argon and this vaporizes the mercury drops inside the discharge tube. The electron emitting material supplies electrons to ...
Solar Lamps Evaluation
Solar Lamps Evaluation

... Measure the Light Output via integrating sphere and record data in numeric and graphical form for evaluation report. ...
Sustainable Light Bulb Purchasing Protocols
Sustainable Light Bulb Purchasing Protocols

... The main component of a fluorescent lamp is a sealed glass tube. The tube contains a small bit of mercury and an inert gas, typically argon, kept under very low pressure. The tube also contains a phosphor powder, coated along the inside of the glass. The tube has two electrodes, one at each end, whi ...
Lighting For Security
Lighting For Security

... High Pressure Sodium Advantages: 1) Very Efficient - 20-28,000 hrs. life 2) Can cut through fog and allow the eyes to see detail at greater distance ( used on streets & parking lots ) 3) In some cases it can be used with CCTV ...
CRIME PREVENTION THROUGH ENVIRONMENTAL DESIGN
CRIME PREVENTION THROUGH ENVIRONMENTAL DESIGN

... High Pressure Sodium Advantages: 1) Very Efficient - 20-28,000 hrs. life 2) Can cut through fog and allow the eyes to see detail at greater distance ( used on streets & parking lots ) 3) In some cases it can be used with CCTV ...
1

History of street lighting in the United States

The use of street lighting was first recorded in the city of Antioch from the 4th century. Later it was recorded in the Arab Empire from the 9th–10th centuries, especially in Cordova, and then in London from 1417 when Henry Barton, the mayor, ordered ""lanterns with lights to be hanged out on the winter evenings between Hallowtide and Candlemasse."" It was introduced to the US by inventor Benjamin Franklin, who was the postmaster of Philadelphia, Pennsylvania. For this reason, many regard Philadelphia as the birthplace of street lighting in the US.The colonial-era streetlights were lit by candles placed inside a glass vessel, which kept the candle from being blown out by wind. Franklin's design was four-sided, with four separate panes of glass, so that if one pane of glass was broken, the lamp did not need to be entirely replaced, and might not even blow out.After the invention of gas lighting by William Murdoch in 1792, cities in Britain began to light their streets using gas. The United States followed suit shortly afterwards with the introduction of gas lighting to Pelham Street in Newport, Rhode Island in 1803. Throughout the 19th century, the use of gas lighting increased. Some locations in the US still use gas lights.After Thomas Edison pioneered electric use, light bulbs were developed for the streetlights as well. The first city to use electric street lights was Wabash, Indiana. Charles F. Brush of Cleveland, Ohio wanted to publicly test his new invention the ""Brush Light"" and needed a city to do so. The City Council of Wabash agreed to testing the lights and on March 31, 1880, Wabash became the ""First Electrically Lighted City in the World"" as a flood of light engulfed the town from four Brush Lights mounted atop the courthouse. One of the original Brush Lights is on display at the Wabash County Courthouse. By the beginning of the 20th century, the number of fire-based streetlights was dwindling as developers were searching for safer and more effective ways to illuminate their streets. Fluorescent and incandescent lights became popular during the 1930s and 1940s, when automobile travel began to flourish. A street with lights was referred to as a white way during the early 20th century. Part of New York City's Broadway was nicknamed the Great White Way due to the massive number of electric lights used on theater marquees lining the street.
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