eli5: Why can I look through some solid objects but not others?

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For example, as I type this, I can look through my phone and see the trees and leaves behind my phone. But if I try to look through the wall, I can’t no matter how I zoom my eye lens.

What is going on here? Can I only look through objects that have a certain thickness but not others? In other words is the wall too thick to look through and my phone only being about a centimeter thick is thin enough to look through?

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8 Answers

Anonymous 0 Comments

The next time you ‘look through your phone’, close one of your eyes. Then open it and close the other. That should answer your question.

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