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1.2 cm – length of a bee; 1.2 cm – diameter of a die; 1.5 cm – length of a very large mosquito; 1.6 cm – length of a Jaragua Sphaero, a very small reptile; 1.7 cm – length of a Thorius arboreus, the smallest salamander [112] 2 cm – approximate width of an adult human finger; 2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec
1.0 dm (3.9 in) centimetre: cm cm US spelling: centimeter: 1.0 cm (0.39 in) cm in; millimetre: mm mm US spelling: millimeter: 1.0 mm (0.039 in) mm in; micrometre: μm (um, micrometre) μm US spelling: micrometer: 1.0 μm (3.9 × 10 −5 in) nanometre: nm nm US spelling: nanometer: 1.0 nm (3.9 × 10 −8 in) non-SI metric: ångström: Å ...
The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm), or nanometer (American spelling), is a unit of length in the International System of Units (SI), equal to one billionth (short scale) of a meter (0.000000001 m) and to 1000 picometres.
The picometre is one thousand femtometres, one thousandth of a nanometre ( 1 / 1000 nm), one millionth of a micrometre (also known as a micron), one billionth of a millimetre, and one trillionth of a metre. [2] The symbol μμ was once used for it. [3] It is also one hundredth of an ångström, an internationally known (but non-SI) unit ...
Wavenumber, as used in spectroscopy and most chemistry fields, is defined as the number of wavelengths per unit distance, typically centimeters (cm −1): ~ =, where λ is the wavelength. It is sometimes called the "spectroscopic wavenumber". [1] It equals the spatial frequency.
If a toy marble were scaled down to one nanometer wide, Earth would scale to about 1 meter (3.3 ft) wide. [1] One nanosecond (ns) is about the time required for light to travel 30 cm in air, or 20 cm in an optical fiber. One nanometer per second (nm/s) is approximately the speed that a fingernail grows.
Particle sizes range from nanometers to centimeters. Particles can be characterized by diverse metrics. The scope of particle technology spans many industries including chemical, petrochemical, agricultural, food, pharmaceuticals, mineral processing, civil engineering, advanced materials, energy, and the environment. [1]
Nanometer or nm is equivalent to 10^-9 m. In Nanotechnology accurate control of dimensions of objects is important. Typical dimensions of nanosystems vary from 10 nm to a few hundred nm and while fabricating such systems measurement up to 0.1 nm is required. "Scanning electron microscope"