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Physics Guru is an online education and competitive examinations preparation portal founded by Manish Verma, an IIT Madras alumnus, providing learning resources for competitive examinations.

The emphasis is on conceptual understanding, analytical thinking and problem solving rather than simply memorising formulas and standard methods.

The objective is to help students understand what they are learning and develop the ability to solve problems they have not seen before.

Levitating frog in magnetic field

You will find mention of this experiment in Halliday, Resnick, Walker. Things showing diamagnetism - that includes humans - can be made to levitate if placed in strong magnetic field. Here the frog is levitated using magnetic field of about 10 Tesla.