dark matter, 456
Darwin, 18
Darwin, Charles, 856
Davisson
C.J., 890
de Broglie
Louis, 890
decay
exponential, 863
decoherence, 885, 999
Deep Space 1, 134
definitions
conceptual, 57
operational, 57
degeneracy, 920
delta function (Dirac), 977
derivative
partial, 220
Descartes, Ren ́e, 131, 191
Dialogues Concerning the Two New Sciences,
36
diamagnetism, 740
differential mode, 738
diffraction
defined, 812
double-slit, 816
fringe, 813
scaling of, 814
single-slit, 821
diffraction grating, 821
diffuse reflection, 768
digital camera, 871
dimension of a vector space, 965
diopter, 791
dipole
electric, 584
energy due to orientation, 588
field of, 693
magnetic, 678
field of, 694
dipole moment, 585
Dirac delta function, 977
dispersion, 809, 894
dispersive waves, 367
dissonance, 386
divergence, 652
DNA, 518
Doppler effectin relativity, 373
Doppler shift, 368
for light, 426
gravitational, 447
dot product, 216
relativistic, 425
double-slit diffraction, 816
duality
wave-particle, 878
Dulong-Petit law, 334, 351
dyne (unit), 1027E ̈otv ̈os, Roland, 61
Eddington
Arthur, 856
Einstein
and randomness, 856
Einstein’s ring, 444
Einstein, Albert, 855, 870
and Brownian motion, 484
electric current
defined, 531
electric dipole, 584
field of, 693
electric field, 583
energy density of, 605
related to voltage, 590
electric forces, 475
electrolytes, 549
electromagnetic wave, 724
momentum of, 448
electron, 491
as a wave, 890
spin of, 934
wavefunction, 893
electron capture, 512
electron decay, 512
electrostatic unit, 1027
elements, chemical, 482
emf, 713
emission spectrum, 898
Empedocles of Acragas, 764
endoscope, 806
energy, 73
“free”, 73
distinguished from force, 154
equivalence to mass, 433
heat, 741094 Index