Nanometer (nm)
Definition: A nanometer (nm) is one-billionth of a meter. It is commonly used in nanotechnology, semiconductor design, and physics to measure atomic-scale structures and wavelengths of light.
History: The nanometer gained importance in the 20th century as scientists developed electron microscopes and advanced microfabrication techniques. It became critical for measuring molecules and tiny electronic components.
Current Use: Nanometers are used in physics, materials science, and chip manufacturing. They help define the scale of microprocessors, DNA strands, and wavelengths in ultraviolet and X-ray light applications.
Exameter (Em)
Definition: An exameter (Em) is a unit of length equal to 10^18 meters. It is used primarily in theoretical physics and astronomy for describing vast cosmic distances.
History: As the metric system expanded, large-scale units like the exameter were introduced to accommodate astronomical and scientific measurements requiring extremely large distances.
Current Use: Exameters are rarely used in everyday applications but appear in astrophysics when discussing interstellar distances, black hole measurements, and the size of cosmic structures.
Quick Conversion Table Nanometer (nm) to Exameter (Em)
1 Nanometer (nm) equal to 1.0e-27 Exameter (Em)
5 Nanometer (nm) equal to 5.0e-27 Exameter (Em)
10 Nanometer (nm) equal to 1.0e-26 Exameter (Em)
20 Nanometer (nm) equal to 2.0e-26 Exameter (Em)
30 Nanometer (nm) equal to 3.0e-26 Exameter (Em)
50 Nanometer (nm) equal to 5.0e-26 Exameter (Em)
75 Nanometer (nm) equal to 7.50e-26 Exameter (Em)
100 Nanometer (nm) equal to 1.0e-25 Exameter (Em)