Stock Code: 430511
LW-Q726
LW-8343
LW-Q727
LW-Q745 & LW-Q746
llongwill® Joule's Law Apparatus
Verify the Joule's Law
Study on the heat effect of electric current
llongwill® Resistance Law Apparatus
llongwill® Electromagnet Apparatus
llongwill® The Propogation of electromagnetic Wave Apparatus