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The Alpena Light, also known as the Thunder Bay River Lighthouse [9] or Alpena Breakwater Light, [6] is a lighthouse on Lake Huron near Alpena, Michigan. [ 10 ] [ 11 ] Standing on the north breakwater of Alpena Harbor, the light marks the entrance to the Thunder Bay River from Thunder Bay . [ 6 ]
An LED street light based on a 901-milliwatt output LED can normally produce the same amount of (or higher) luminance as a traditional light, but requires only half of the power consumption. LED lighting does not typically fail, but instead decreases in output until it needs to be replaced. [2]
Herman Besser was involved with the Alpena Portland Cement company. In 1904, his son, Jesse Besser, developed the first hand-tamp block machine. This technology ‘revolutionized the block-making industry” and the Besser Company was born. The company is still a leader in block making machinery technology. Its international headquarters is in ...
2 1914 light discrepancy. 5 comments. 3 Picture at wikimedia commons. 1 comment. 4 Not a "Stub class" anymore. 2 comments. 5 C class. ... Talk: Alpena Light. Add ...
One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.
An assistant keeper's house was added in 1908, and the light was upgraded to an incandescent vapor lamp in 1914. The change increased the light's range to 18 miles (16 nmi; 29 km) over the lake, [7] and further protection was added in 1918 with the addition of a lighted bell buoy some two and a quarter miles offshore at the end of the point.