How do we calculate the number of angstroms in a millimetre?

1 Answer
anor277
Feb 22, 2016

With difficulty! #1# #mm# #=# #10^-3# #m#; #1# #mum# #=# #10^-6# #m#; #1# #"angstrom"# #=# #10^-10# #m#.

Explanation:

So #20# #mm# #=# #20xx10^-3cancelm# #xx# #10^6# #cancel(mum)*cancel(m^-1)# #xx# #10^4" angstrom"cancel(*mum^-1)# #=# #??# #"angstroms"#.

Normally, the symbol for angstrom is a capital A with a circle on top.

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