2、Experimental problem and solution of the 9~(th) Asia Physics Olympiad;
1、The Influence Factors on Item Difficulty of Chinese Physics Olympiad
3、The first International Physics Olympiad took place in worse of (Warsaw), Poland, in 1967.
5、The experimental problem about magnetic braking on an inclined plane in the 6th Asia Physics Olympiad is introduced.
4、The first International Physics Olympiad took place in Warsaw, Poland, in 1967.