As a research student, British physicist Lawrence Bragg discovered how to use X-rays to determine the atomic structure of crystals. Working with his father, physicist William Henry Bragg, he developed the principles of X-ray crystallography, a technique that revolutionized chemistry, physics, and biology. Their breakthrough earned them the 1915 Nobel Prize in Physics, making Lawrence Bragg, at 25 years old, the youngest Nobel laureate in physics.
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