Stitch0815Dec 10

1.2 Å

https://feddit.org/post/22767922

Show threadTheLeadenSeaDec 10
EM = electromagnetic? Å = a Swedish letter? What am I missing?
Show threadmononomiDec 10
I think this is referring to electron microscopy, and å is a unit for 10^-10^ meters. Electron microscopy can be very noisy and it is hard to distinguish objects
Show threadwewbull
Angstroms hurt my brain. A $10^{-10}$ of a metre, but not a nanometre or a picometre. Just…why?
Dec 11 at 2:51amWeb
Show threadHuleDec 13

… However, they soon realized that the definition of the metre at the time, based on a material artifact, was not accurate enough for their work. So, around 1907 they defined their own unit of length, which they called “Ångström”, based on the wavelength of a specific spectral line. It was only in 1960, when the metre was redefined in the same way, that the angstrom became again equal to 10^10 metre. Wikipedia

Angstrom - Wikipedia