throw (some) light on (something)

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throw (some) light on (something)

To reveal information or details about something; to clarify or help people understand something. We've hired a private investigator to help throw light on the clandestine dealings of the baron. These documents we've uncovered throw some light on how the late author's final book was meant to end.
See also: light, on, throw

throw (or cast or shed) light on

help to explain (something) by providing further information about it.
See also: light, on, throw