Both forming images when placed in their respective places best describes Becquerel’s experiments.
What is Becquerel’s experiment?
This was conducted by Henri Becquerel in which he sought to know how uranium salts are affected by light.
He discovered that the salts emits a penetrating radiation and formed an image in the presence of light but didn't form any in darkness.
Read more about Becquerel’s experiment here https://brainly.com/question/27584302
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