He could concentrate light with a concave, I wouldn't use the word "collect".
The best way to collect light would be to use a black surface....it collects, and turns it to heat.
Ok, This is so Hard!!! :(
A friend tells you that he used a mirror to "collect" light (really, I don't know how that is possible). Did he use a Concave, flat, or convex mirror? (Like Bruh!!!) Draw a diagram to explain the concept of "collecting light."
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