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2012
- Congress established the first national light bulb efficiency standards in 2007, which were signed into law by President George W. Bush. Starting in 2012, the law required new light bulbs to use 28 percent less power than existing incandescent lights — essentially ending the sale of the older, inefficient bulbs.
www.nytimes.com/interactive/2019/03/08/climate/light-bulb-efficiency.html
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Jun 9, 2021 · Some estimates suggesting that an overnight global switch to highly efficient LED light bulbs could cut 1,400 million tonnes of CO 2 emissions. This would avoid the construction of 1,250 power stations around the world – a monumental saving both in terms of carbon emissions and air quality.
Jan 28, 2020 · Traditional incandescent light bulbs are being phased out around the world and replaced by more energy-efficient halogen, LED and OLED alternatives—all producing more light for less energy input.
Mar 23, 2021 · In this article, we explore past, present, and future of energy efficient lighting. The beginning of light bulbs. Traditional, or incandescent light bulbs were invented over 100 years ago in 1879. These were extremely inefficient, with only 5% of the electricity being converted into visible light.
Slowly over the 20th century, the lightbulb developed to become more efficient. With the creation of fluorescent bulbs, a single lightbulb could last for over 10 years of regular use. Although more efficient bulbs were invented, it wasn’t until the development of LEDs that lighting could be produced easily and effectively for all uses.
Nov 18, 2014 · Compact fluorescent lamps (CFLs) – or energy efficient bulbs, as they are more commonly known – were supposed to spell the end of the light bulb in the 1970s. But despite rising to prominence...
Nov 22, 2013 · In 1913, Irving Langmuir figured out that placing an inert gas like nitrogen inside the bulb doubled its efficiency. Scientists continued to make improvements over the next 40 years that reduced the cost and increased the efficiency of the incandescent bulb.
Mar 21, 2024 · In 1911, the introduction of tungsten filaments significantly improved the lifespan and efficiency of incandescent light bulbs. Throughout history, the quest for efficient and reliable illumination has driven technological advancements.
