Bragg's Law

📊 advanced

$$n\lambda = 2d \sin \theta$$

Conditions for constructive interference from a crystal lattice.

Variables & Units

$n$

Order of reflection

Unit: Integer

$\lambda$

Wavelength of X-ray

Unit: Meter ($m$)

$d$

Interplanar spacing

Unit: Meter ($m$)

$\theta$

Angle of incidence

Unit: Degrees

Key Information

📐 Derived From

Geometry of wave interference in periodic structures.

💡 Example

Determining the atomic structure of DNA.

🔧 Applications

Materials science and structural biology.

⚠️ Constraints

Requires periodic crystal structure.

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