He very quickly improved various details and in 1933 was able to build the first electron microscope with a performance clearly superior to that of the conventional light microscope.
(He; very quickly improved; various details) (He; was; able to build the first electron microscope with a performance clearly superior to that of the conventional light microscope; T:in 1933)
He He
very quickly improved was
various details
able to build the first electron microscope with a performance clearly superior to that of the conventional light microscope T:in 1933