Angström

Angström (symbol: Å) is a unit of length equal to 10^-10 meters (0.1 nanometers). It is named after the Swedish physicist Anders Jonas Ångström, who is known for his work in the field of spectroscopy. The angström is primarily used in the fields of physics, chemistry, and biology to express the sizes of atoms, molecules, and microscopic biological structures.

History

The unit was named after Anders Jonas Ångström in recognition of his contributions to the field of spectroscopy. Ångström's work in the mid-19th century laid the foundation for the use of this unit in measuring wavelengths of light and other electromagnetic radiation.

Usage

The angström is commonly used in various scientific disciplines:

• In physics, it is used to measure the wavelengths of electromagnetic radiation, particularly in the ultraviolet, visible, and X-ray regions of the spectrum.
• In chemistry, it is used to describe the sizes of atoms, bond lengths, and the dimensions of crystal lattices.
• In biology, it is used to measure the sizes of biological molecules and structures, such as proteins and DNA.

Conversion

1 angström is equivalent to:

• 0.1 nanometers (nm)
• 100 picometers (pm)
• 10^-10 meters (m)

Related Units

The angström is part of the metric system, but it is not an SI unit. The SI unit for length is the meter. Other related units include the nanometer and the picometer.

See Also

• Anders Jonas Ångström
• Spectroscopy
• Electromagnetic spectrum
• Nanometer
• Picometer
• Meter

External Links

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