The phrase "as darkness increases" is correct and usable in written English.
It can be used to describe a situation or phenomenon that occurs concurrently with the growing presence of darkness, such as during the evening or in a metaphorical sense.
Example: "As darkness increases, the stars begin to twinkle more brightly in the night sky."
Alternatives: "as night falls" or "as the light fades".
Its synthesis and secretion is controlled by light and dark conditions, whereby light decreases and darkness increases its production.
The darkness increases in the sky as the darkest parts of our personalities also arise.
The monumental "Christ Crucified Between Two Thieves" (1653-55) presenthethe climax of the biblical narrative as an event of almost cataclysmic foreboding, whose darkness increases markedly from the first to the fourth of its five states.
Other factors, such as darkness and caffeine, increase tolerance in test animals, but these effects have not been proven in humans.
The Hampshire Independent reported: "As darkness grew, the crowds increased, both outside the White Star offices and the west gate side of the docks.
As darkness descended and the unearthly howling increased, the 13 women prayed for the twister to miss Bug Town and Bay St . Clement believing as they did so that even if they were taken in the whirlwind, as Disciples of Lazarus they would rise again.
Melatonin also follows a circadian rhythmic pattern, mainly determined by the pineal gland that increases the production of melatonin upon physiological stimuli such as darkness.
Thousands of students marched through central London on Wednesday to protest against fee increases and were met by large numbers of police but as darkness fell the demonstration appeared to be passing off peacefully.
In Ferguson, despite the increased military presence, a police car was set on fire near City Hall as darkness fell, while officers fired smoke bombs and tear gas to scatter protesters.
What is happening is that, in this range of luminosities, called mesopic, both rods and cones are responding, and, as the rod responses become more pronounced i.e., as darkness increases the rod luminosity scale prevails over that of the cones.
