Convert line (button makers) to siegbahn
Selected category: length.
Definition and details for line (button makers):
U.S. button maker use the "line" unit of length to measure buttons. This unit is equal to 1/40 inch or 0.635 mm. It was probably introduced by German immigrants, who used since ninth century a different version of "ligne" equal to 1/40 inch to measure buttons.
Definition and details for siegbahn:
Siegbahn is another mane for the X unit of length used to describe the wavelength of x-rays. This unit was named Siegbahn to honor the Swedish physicist Karl M.G. Siegbahn (1886-1978), who received the Nobel Prize in Physics in 1924 for his work in x-ray spectroscopy. It is equal to 1.0021×10-013 meter.