throw (some) light upon (something)

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throw (some) light upon (something)

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