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Single weight chain lamp. This construction uses a chain to keep the arm with the counterweight and the forearm parallel. The lamp-cap and counterweight move in opposite directions (both away from the base or both towards it). The balance that is required is shown by the following formula: d 1 = Lamp-cap to base; m 1 = weight of lamp-cap
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Aquarium with LED lighting. Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps.Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1]
GravityLight was a gravity-powered lamp manufactured until 2019. It was designed by the company Deciwatt for use in developing or third-world nations, as a replacement for kerosene lamps. It uses a bag filled with rocks or earth, attached to a cord, which slowly descends similar to the weight drive in a cuckoo clock. This action was claimed to ...
An aquarium can be placed on an aquarium stand. Because of the weight of the aquarium, a stand must be strong as well as level. A tank that is not level may distort, leak, or crack. [47] These are often built with cabinets to allow storage, available in many styles to match room decor. Simple metal tank stands are also available. [47]
The failure of the lamps to gain popularity may be due to the manufacturer, Copenhagen Lighting Service, removing some components of the lamp because they caused the light to glare. [13] This was an issue that Poul Henningsen would later solve and the glare-free design feature would become a signature characteristic of his work.
Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...
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