def display( self, measure, unit, unit_list ):
super().display( measure, unit, unit_list )
args= equiv.freq_wavelength( f=measure )
print( " = {0:12.4f} {1.__doc__:.<20s}({1.name:s})".format(equiv.METRE.from_std(args.l),equiv.METRE) )
def handle_alt_units( self ):
value= input_float( "ENTER: How many {0}...? ".format("Wavelength") )
if value is None: return
args= equiv.freq_wavelength( l=value )
measure= equiv.HERTZ.to_std( args.f )
return measure
