throw an amount of light on
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.
throw an amount of light on someone or something
to present some revealing information about someone or something. What you have just told me throws a lot of light on George and his motivation. Will you please throw some light on the problem?