The Feynman Lectures

Now, anyone with internet access and a web browser can enjoy reading a high quality up-to-date copy of Feynman's legendary lectures.

This edition has been designed for ease of reading on devices of any size or shape; text, figures and equations can all be zoomed without degradation.

Volume I mainly mechanics, radiation, and heat

Volume II mainly electromagnetism and matter

Volume III quantum mechanics

♢

Lecture Photos 1961-62 1314 flp lecture photos

Lecture Photos 1962-64 1729 flp lecture photos

Feynman's Notes 611 pages of flp lecture notes

Original Course Handouts 1961-63 744 pages of flp student handouts

Key events during the energy expansions of evolution

(i) Life emerges; epoch of geochemistry begins. (ii) Anoxygenic photosynthesis: start of energy epoch 2, sunlight. (iii) Emergence of cyanobacteria. (iv) Great Oxidation Event: energy epoch 3, oxygen. (v) Probable eukaryotic fossils appear. (vi) Fossils of red algae appear. (vii) Start of energy epoch 4, flesh. (viii) Vascular plants colonize land; fire appears on Earth. Finally, the burning logs indicate the start of energy epoch 5, fire. The dates of (i)–(iii) are highly uncertain. For (i) I have taken the earliest date for which there is evidence consistent with life20. For (ii) I have taken the earliest date for which there is evidence consistent with photosynthesis18,19,21. For (iii), I have marked the date currently supported by fossil evidence for the presence of cyanobacteria (see main text, ‘Cyanobacteria and the oxygenation of the air’). Tick marks represent intervals of 25 million years. Figure drawn by F. Zsolnai.

Waves