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2. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   In 1945, Robert Sherman of Lynn, Massachusetts, invented a portable, in-window air conditioner that cooled, heated, humidified, dehumidified, and filtered the air. The first inverter air conditioners were released in 1980–1981. Air conditioner adoption tends to increase above around $10,000 annual household income in warmer areas.

3. Voltas - Wikipedia

   en.wikipedia.org/wiki/Voltas

   Voltas produced India's first window air conditioner with DC-inverter-based variable-speed motors. DC Inverter Technology is an innovative technology that provides superior cooling while reducing the frequency of turning the compressor on and off. This helps in reducing the power consumption to a greater extent.

4. Blue Star (company) - Wikipedia

   en.wikipedia.org/wiki/Blue_Star_(company)

   Number of employees. 2,800+ (2022) [2] Website. www .bluestarindia .com. Blue Star Ltd is an Indian multinational home appliances company, headquartered in Mumbai. It specializes in air conditioning, commercial refrigeration and MEP (mechanical, electrical, plumbing and firefighting). It is the country's second largest homegrown player in the ...

5. Photovoltaics - Wikipedia

   en.wikipedia.org/wiki/Photovoltaics

   Photovoltaics ( PV) is the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry. The photovoltaic effect is commercially used for electricity generation and as photosensors . A photovoltaic system employs solar modules ...

6. A-type main-sequence star - Wikipedia

   en.wikipedia.org/wiki/A-type_main-sequence_star

   An artist's impression of Sirius A and Sirius B, a binary star system. Sirius A, an A-type main-sequence star, is the larger of the two. An A-type main-sequence star (A V) or A dwarf star is a main-sequence ( hydrogen burning) star of spectral type A and luminosity class V (five). These stars have spectra defined by strong hydrogen Balmer ...

7. Canopus - Wikipedia

   en.wikipedia.org/wiki/Canopus

   Canopus is the brightest star in the southern constellation of Carina and the second-brightest star in the night sky. It is also designated α Carinae, which is romanized ( transliterated) to Alpha Carinae. With a visual apparent magnitude of −0.74, it is outshone only by Sirius .