“When a photon comes down, it interacts with electrons throughout the glass, not just on the surface. The photon and electrons do some kind of dance, the net result of which is the same as if the photon hit only on the surface.”
Source: QED: The Strange Theory of Light and Matter (1985), p. 17
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Richard Feynman 181
American theoretical physicist 1918–1988Related quotes

Preface to the First American Printing (1950) Note: see Paul Dirac, The Principles of Quantum Mechanics (1947)
Space—Time—Matter (1952)

when the velocity <math>v</math> approaches the speed of light c, the denominator approaches 0 thus E approaches infinity, unless m = 0.
Source: The Lightness of Being – Mass, Ether and the Unification of Forces (2008), Ch. 3, p. 19 & Appendix A

Longing for the Harmonies: Themes and Variations from Modern Physics (1987)

The way we use these sources is the key in order to define the required musical result. Without neglecting the acoustic conventional instruments, I spend a fair amount of time dealing with the electronic sources of sound. But please do not think computers! Computers are extremely helpful and amazing for a multitude of scientific areas, but for me, when it comes to creation, they are insufficient and slow. Therefore all of my efforts are to stay away from that beast".
2012