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Floodlights Association football field at a sports center illuminated with floodlights.. A floodlight is a broad-beamed, high-intensity artificial light.It can provide functional area lighting [1] for travel-ways, parking, entrances, work areas, and sporting venues to enable visibility adequate for safe task performance, ornamental lighting for advertising, façades, monuments, or support ...
LightSail Energy (2008–2018) was an American compressed air energy storage technology startup. [1] [2] The company shut down in 2018, failing to produce a product. [3] [4] The unused tanks were sold away to natural gas companies in 2016. [5]
These issues were identified by U. B. Thomas and W. E. Haring at Bell Labs in the 1930s and eventually led to the development of lead–calcium grid alloys in 1935 for standby power batteries on the U.S. telephone network. Related research led to the development of lead–selenium grid alloys in Europe a few years later. Both lead–calcium and ...
Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...
Compartmentalisation of a ship, to reduce floodability Parts of a water-tight compartment. Floodability is the susceptibility of a ship's construction to flooding.It also refers to the ability to intentionally flood certain areas of the hull for damage control purposes, or to increase stability, which is particularly important in combat vessels, which often face the possibility of serious hull ...
An electric boat is a powered watercraft driven by electric motors, which are powered by either on-board battery packs, solar panels or generators. [ 1 ] While a significant majority of water vessels are powered by diesel engines , with sail power and gasoline engines also popular, boats powered by electricity have been used for over 120 years.
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