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Solar water disinfection (SODIS) application in Indonesia using clear polyethylene terephthalate (PET) plastic beverage bottles. Solar water disinfection, in short SODIS, is a type of portable water purification that uses solar energy to make biologically-contaminated (e.g. bacteria, viruses, protozoa and worms) water safe to drink.
A simpler but slower process involving merely exposure of the yellowed plastic to bright sunlight has been described, variously called 'Sunbrighting' or 'Lightbrighting'. This has both empirical evidence of effectiveness and the theoretical backing of some published scientific literature , which emphasises exposure to strong visible light while ...
A garden solar lamp A child in Zambia studying by the light of a lamp charged by solar power during the day. A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter.
The Solar Bottle Bulb, as it has also been called, [7] is installed in the roof of homes with the purpose of refracting sunlight in order to light up a room. The project's innovation lies in its utilization of cheap, durable and readily available materials to produce high quality natural lighting enabling the urban poor to have access to an ...
A simple light tube, showing the collection, transmission, and distribution. Solar light pipes, compared to conventional skylights and other windows, offer better heat insulation properties and more flexibility for use in inner rooms, but less visual contact with the external environment.
Sonorex ultrasonic cleaner from the 1970s or 1980s Ultrasonic cleaning of a mobile phone. Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than 0.5 litres (0.13 US ...
Headlight restoration or plastic headlight restoration is the act of restoring aged headlight lenses that have become discolored or dull due the original factory UV protective coating degrading primarily due to UV light and other environmental factors such as road debris impact (stones, sand, etc.) rain, and exposure to caustic chemicals.
An advertisement for a Solar Water Heater dating to 1902 Frank Shuman's sunengine on the March 1916 cover of Hugo Gernsback's The Electrical Experimenter. Records of solar collectors in the United States date to before 1900, [5] involving a black-painted tank mounted on a roof. In 1896 Clarence Kemp of Baltimore enclosed a tank in a wooden box ...