Submitted because PhasedArrayToolbox/physconst.m is seriously lame. fundy.m contains about a dozen useful values, and, equally important, does a fair job of partial-matching the input names. The body of the function is a switch, so it's easy to add your own elements to the list.
Carl Witthoft (2020). fundy(x) (https://www.mathworks.com/matlabcentral/fileexchange/54096-fundy-x), MATLAB Central File Exchange. Retrieved .