Oneway to do that iswith a spectrograph, which breaks lightinto a rainbow of colors; artificiallight makes for a different sort of rainbow from the one sunlight produces.
one photograph shows two little girls hugging in the sunlight on the street of an Asian town.
VOA: special.2009.11.20
In the presentation, he explained, as he has many times since, that shielding the earth properly could deflect one or two per cent of the sunlight that reaches the atmosphere.
Juan Bonet lifts his wine glass into the sunlight, tilts it to one side and squints into the velvety red liquid with the expression of a man in the grip of a profound pleasure.
In the UK "between October and May virtually no-one makes vitamin D because of the sunlight" regardless of your skin colour, so Vitamin D levels are dependent on dietary intake, he said.