What is angstrom?

If you thought the nanometer was small, you did not meet angstrom , but it is probably because it preceded the nanometer. Angstrom, named after the Swedish spectroscopist and physics Anders Angstrom (1814-1874), is a hereditary unit of measurement equal to one ten billion meters or 1/10 000 000 000 3,28 feet. In other words, it would take 245 million angstromes to be equal to one inch, 10 million angstromes to be equal to one millimeter or 10,000 angstromes to equal one micron. And now you have guessed that with a nanometer there is one millionth meter, it takes 10 angstromes to equal one nanometer. This unit of measurement has become known as Angstrom. Although Angstrom has been replaced by a nanometer as a unit of choice, it is traditionally used to measure the superblown of light waves and visible light and visible light.

In humans, visible light includes those wavelengths that fall among the rich purple and dark red. For example fiAlo light, measurement in the range of 4000-English, while dark red is closer to 7000 angstromes. The wavelengths at 5500 angstromes (exactly between two extremes) would be yellow light, center into visible light. Today, however, visible light spectrum is more often expressed as in the range of 400 - 700 nanometers (Nm).

To offer several examples in the real world on Angstrom, very thin human hair only 50 microns would be a strong 500,000 angstromes. A sheet of paper is about one million angstromes thick and the credit card is an incredible 8 million fat angstromes.

While Angstrom served its purpose and is still used in some technical areas, already in 1978e International Libra and Measurement Committee retired of this measuring unit by delaying the application of Angstrom to new applications or fields where it was no longer used. American national stAndard has also discouraged its use for metric practice and Angstrom is now considered obsolete.