Equations · equation
Bragg's Law
Waves & Optics · 1913
- Equation
- 2d·sin θ = n·λ
- Field
- Waves & Optics
- Named After
- William Henry Bragg · William Lawrence Bragg
- Symbols
- d spacing between atomic planes in a crystal · θ grazing angle of the X-ray beam · n order · λ X-ray wavelength
- Year
- 1913
Significance
Crystals diffract X-rays as if their atomic planes were mirrors — measure the angles and you read the atomic architecture itself. A father-son Nobel (the son, at 25, still the youngest science laureate); it revealed the structure of salt, diamond, and eventually DNA.
Referenced by
element
equation
instrument
theory
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