AA
Represents the Angstrom unit symbol, used for measuring extremely small distances, particularly in physics and chemistry.
Overview
A specialized unit symbol essential in scientific notation, particularly when describing atomic and molecular dimensions, wavelengths of light, or interatomic distances.
- Common in crystallography for describing lattice parameters
- Used extensively in spectroscopy for wavelength measurements
- Appears frequently in materials science and molecular biology literature
- Equivalent to one ten-billionth of a meter (10⁻¹⁰ meters)
Examples
Specify the wavelength of ultraviolet radiation in Ångströms.
\lambda = 2000\text{\AA}Define the unit conversion between Ångströms and nanometers.
1\text{\AA} = 0.1\text{ nm}Express the diameter of a hydrogen atom.
d_{\text{H}} \approx 1.1\text{\AA}