1. Image formed by convex, convex lens and mirror

 
2.Rotation around sun


3.Atomic Structure

4.Image formed by convex lens and convex lens


5.Density


6.A.C.circuit construction


7.A.C circuit construction virtual

8.Green house effect



8.Collison


9.Natural Selection


10.Force of Gravity


11.Wave introduction


12.Gases introduction


13.Masses and spring


14.Energy form and change


15.Wave interference


16.Mass and spring 2


17.Capacitor


18.Circuit kit D.C. 

19.Circuit kit D.C. 2


20.Pendulum


21.Molecules polarity






23.State of matter


24.Gravity and orbit

25.Pinko probability


26.Isotopes and atomic mass

27.Bending of light


28.Molecules and Light






31.Faraday's Law

32.Wave on a string

33.Color vision










38.Under Pressure

39.Friction

40.Force and Motion




42.Gravity and force


43.Baloon and statics

44.Oham's Law

45.Resistance in wire


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