This paper delves into Wang Kan-changs 1942 publication in Physical Review， “A suggestion on the detection of the Neutrino” offering a detailed explanation of the historical background， physical concepts， and principles involved at the level of undergraduate physics. It proceeds to outline the five significant experiments conducted between 1942 and 1952 that utilized Wang Kan-changs proposal， the K-capture method， for neutrino detection. Special emphasis is placed on examining the technical reasons behind the success of Daviss 1952 experiment.