The whole thing was basically an experiment, Richard Feynman said late
in his career, looking back on the origins of his lectures. The
experiment turned out to be hugely successful, spawning publications
that have remained definitive and introductory to physics for decades.
Ranging from the basic principles of Newtonian physics through such
formidable theories as general relativity and quantum mechanics,
Feynman's lectures stand as a monument of clear exposition and deep
insight.
Timeless and collectible, the lectures are essential reading, not just
for students of physics but for anyone seeking an introduction to the
field from the inimitable Feynman.