Convert Microns to Angstroms (µ to Å) ▶
How to convert
1 angstrom (Å) = 0.0001 micron (µ). Angstrom (Å) is a unit of Length used in Metric system. Micron (µ) is a unit of Length used in Metric system.
Angstrom: A Small Unit of Length Used in the SI System
The angstrom is a unit of length that is equal to 0.1 nanometer (nm) or 10-10 meter (m). It is one of the non-SI units that are accepted for use with the International System of Units (SI), which is the most widely used system of measurement in the world. The symbol for angstrom is Å, a letter of the Swedish alphabet. The unit is named after the Swedish physicist Anders Jonas Ångström (1814-1874), who was a pioneer in the field of spectroscopy. The angstrom is often used in the natural sciences and technology to express sizes of atoms, molecules, microscopic biological structures, and lengths of chemical bonds, arrangement of atoms in crystals, wavelengths of electromagnetic radiation, and dimensions of integrated circuit parts. In this article, we will explore the definition, history, usage and conversion of the angstrom as a unit of length.
Definition of the Unit
The angstrom is a unit of length that is equal to 0.1 nanometer (nm) or 10-10 meter (m). It is one of the non-SI units that are accepted for use with the International System of Units (SI), which is based on seven base units: meter (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (amount of substance) and candela (luminous intensity). The SI base unit of length is the meter, which is defined as the length of the path travelled by light in vacuum during a time interval of 1/299792458 seconds.
The definition of the angstrom has not changed since its introduction in 1868 by Anders Jonas Ångström, who used it to express wavelengths of light in his chart of the spectrum of sunlight. However, the definition of the meter has changed several times over time, as different standards and methods of measurement were adopted by various countries and regions. The current definition of the meter as based on the speed of light was agreed upon by an international treaty in 1983, and since then the angstrom has been exactly equal to 10-10 meter.
History of the Unit
The origin of the angstrom as a unit of length can be traced back to 1868, when Swedish physicist Anders Jonas Ångström created a chart of the spectrum of sunlight, in which he expressed the wavelengths of electromagnetic radiation in multiples of one ten-millionth of a millimeter (or 10-7 mm). He chose this unit because it was convenient for his work on spectroscopy, which is the study of how matter interacts with electromagnetic radiation. He also named this unit after himself, as he wrote in his paper: "I have taken as unit for these measurements one ten-millionth part [of a millimeter], which I will call an Ångström".
Ångström’s unit was soon adopted by other spectroscopists and physicists, who found it useful for expressing wavelengths of visible light, ultraviolet light and X-rays. However, they soon realized that the definition of the millimeter at the time, based on a material artifact, was not accurate enough for their work. So, around 1907 they defined their own unit of length, which they called "Ångström", based on the wavelength of a specific spectral line emitted by krypton-86 gas. This new definition was more precise and stable than the previous one based on the millimeter.
In 1960, when the meter was redefined as based on a specific number of wavelengths emitted by krypton-86 gas, the angstrom became again equal to 10-10 meter. However, this definition was soon replaced by another one based on the speed of light in vacuum in 1983. Since then, the angstrom has remained unchanged as equal to 10-10 meter.
Usage of the Unit
The angstrom is a unit of length that is often used in the natural sciences and technology to express sizes of atoms, molecules, microscopic biological structures, and lengths of chemical bonds, arrangement of atoms in crystals, wavelengths of electromagnetic radiation, and dimensions of integrated circuit parts. Some examples of where the angstrom is used are:
How to Convert
The angstrom can be converted to other units of length by using conversion factors or formulas. Here are some examples of how to convert angstroms to other units of length in the U.S. customary system, the imperial system and the SI system:
Micron: A Unit of Length
A micron is a unit of length that is equal to one millionth of a meter. It is also known as a micrometer or a micrometre. The symbol for micron is µm.
How to Convert Micron
To convert micron to other units of length, we need to use some conversion factors. Here are some common conversion factors for US Standard system and SI system:
Using these conversion factors, we can multiply or divide the number of microns by the appropriate factor to get the equivalent length in another unit. For example:
Where Micron is Used
The micron is used in various fields and applications that require measuring very small distances or sizes. Some examples are:
The use of micron varies by country and region. For example:
Definition of the Micron
The micron is defined as one millionth of a meter. A meter is the base unit of length in the SI system. The SI system is an international system of units that is based on seven fundamental quantities: length, mass, time, electric current, temperature, luminous intensity, and amount of substance.
The meter was originally defined as one ten-millionth of the distance from the equator to the North Pole along a meridian. However, this definition was not very precise and practical. Therefore, over time, the definition of the meter has changed several times based on different physical constants and standards. The current definition of the meter was adopted in 1983 by the General Conference on Weights and Measures (CGPM). It states that:
The meter is the length of the path travelled by light in vacuum during a time interval of 1/299792458 second.
Using this definition, we can derive that one micron is equal to:
1 µm = (1/299792458) / (1000000) second * (299792458 m / second)
= (1/1000000) m
= 0.000001 m
History of Micron
The micron was first introduced in the late 18th century by French scientists who were developing a decimal system of units. They proposed a unit called micrometre that was equal to one millionth of a meter. However, this unit was not widely accepted or used at that time.
In the early 19th century, British scientists adopted a similar unit called microinch that was equal to one millionth of an inch. This unit was more popular among English-speaking countries and regions.
In the late 19th century, German scientists proposed a new unit called mikrometer that was also equal to one millionth of a meter. This unit was more consistent with the metric system and became more widely used in Europe and Asia.
In the early 20th century, the International Bureau of Weights and Measures (BIPM) recommended using the term micrometer instead of micron or mikrometer to avoid confusion with other units. However, many people still preferred using micron as a shorter and simpler name.
In 1960, the CGPM adopted the SI system as the official system of units for science and technology. The SI system used the term micrometer as the official name for the unit of length equal to one millionth of a meter. The symbol for micrometer was also standardized as µm.
However, the term micron and its symbol µ were still widely used in many fields and applications. Therefore, in 1975, the CGPM decided to allow the use of micron and µ as alternative names and symbols for micrometer and µm. However, they also stated that these alternatives should be avoided in official documents and publications.
Example Conversions of Micron to Other Units
Here are some examples of converting micron to other units of length:
Español Russian Français
Centimeters to Inches
Feet to Inches
Feet to Kilometers
Feet to Meters
Feet to Yards
Inches to Centimeters
Inches to Feet
Inches to Meters
Inches to Millimeters
Kilometers to Miles
Meters to Feet
Meters to Inches
Meters to Yards
Miles to Kilometers
Millimeters to Inches
Yards to Feet
Yards to Inches
Yards to Meters