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Losing the dark. Light pollution, the term for the brightening of the night sky by unnatural lights, is increasing worldwide. On average, skies are getting 10% brighter each year globally, with ...
A "dark lantern" was a candle lantern with a sliding shutter so that a space could be conveniently made dark without extinguishing the candle. For example, in the Sherlock Holmes story " The Red-Headed League ", the detective and police make their way down to a bank vault by lantern light but then put a 'screen over that dark lantern' in order ...
Illustration of a magic lantern from "Ars Magna Lucis et Umbrae" Kircher's unusual depiction of the magic lantern has been taken by some critics to mean that he had not actually built one or seen it operate, since the illustration shows the mirror not properly alighted with the light source and the glass slider appears in front of the lens tube ...
Much the same applies also to Abralia veranyi, but it was largely given away by its unlit fins and tentacles, which appear dark against the background from as far away as 8 metres (8.7 yd). All the same, the counter-illumination camouflage of these species is extremely effective, radically reducing their detectability.
In November last year, AlUla Manara and AlGharameel Nature Reserves, near the ancient oasis city of AlUla, were named the first-ever Dark Sky Parks in the Middle East by DarkSky International, a ...
The dark-sky movement is a campaign to reduce light pollution.The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of electric lighting on the environment, improving the well-being, [1] health [2] and safety [3] of people and wildlife, [4] and cutting down on energy usage.
It's the first major "Green Lantern" project since Ryan Reynolds' 2011 film. ... in an origin story that made only $227 million against a $200 million budget, ... "Lanterns" will explore a "dark ...
Aglow are the faces of the angels, St Joseph and Virgin Mary. Although the shepherds' fire on the hill behind and the angel outside the window create a light source, it's dim in comparison to that provided by the infant child. The sharp contrast of the divine light against dark is a tool used to make the scene appear more profound for its viewers.