Artificial sunlight
From Tardis Wiki, the free Doctor Who reference
Artificial sunlight, also known as synthetic sunlight, was sunlight given off by artificial suns.
The Sunlight Worlds were lit by artificial sunlight. (PROSE: The Dalek Generation) The Collector used six artificial suns to light Pluto. (TV: The Sun Makers)
The Daleks claimed to offer the Thals fresh vegetables that were created with synthetic sunlight. (TV: "The Escape")
The vep was a unit used for artificial sunlight. (The Dalek Book)
