Question

Before 1896, many scientist concluded that like he’s not pass through black paper. In 1896, Henri becquerel observed that uranium salts could cause a plate covered by black paper to react as if light had reached it. How did this observation affect conclusions about light passing through black paper?

My answer: scientists stood behind the earlier conclusion that black paper blocks light because it was already and accepted conclusion

CHECK MY ANSWER PLEASE

Answer 1

observing uranium's effect has nothing to do with the effects of light.

You are correct, though, that it did not change the fact that black paper blocks light.

Answer 2

The answer is:
Scientists had to revise their earlier conclusion because evidence from Becquerel did not support the original conclusion.