Paul Sen, a documentary filmmaker dedicated to popularizing science, was introduced to thermodynamics while studying engineering. Thermodynamics studies the properties of energy and entropy that explain the behavior of many physical systems, from the cells of living organisms to the black hole at the heart of our Galaxy. Nevertheless, thermodynamics, as a rule, remains in the shadow of other branches of physics. In an effort to correct this injustice, Sen tells the history of this science and introduces readers to the work of a range of brilliant engineers, physicists, biologists, cosmologists and mathematicians, from Sadi Carnot to Lord Kelvin, James Joule, Albert Einstein, Emmy Noether, Alan Turing and Stephen Hawking. The publishing layout is saved in PDF A4 format.