what is the meaning of the text in the image above ☝️☝️☝️
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6500Å = 6500 ångström
An angstrom or ångström is a unit of length used to measure very small distances. One angstrom is equal to 10^-10m (one ten-billionth of a meter or 0.1 nanometers). ... The symbol for angstrom is Å, which is a letter in the Swedish alphabet.
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