Page numbers in boldface are illustrations. Entries in boldface are glossary terms.
alpha particle, 21–24, 27, 29–30, 32, 34–35, 40–41, 42
alpha ray, 21
atom, 4–10, 11, 12–13, 15, 15, 17, 18–29, 24, 29, 37–38, 39, 40–41, 49
and alchemy, 8
atomic symbols, 11
forming compounds, 9
gas, 32
helium, 21
nuclear model of, 23
of combining elements, 14
planetary model, 25
plum pudding, 21
transmutation of, 28
with radioactive beams, 21
atomic mass, 15, 24, 27–29, 32, 43
atomic number, 23–24, 27–28, 32, 37, 43, 46
atomic weight, 9–10, 14–15, 16, 17, 24
color, 40
Einstein, Albert, 34–36, 35–36, 48 See also theory of relativity
electron, 5, 15, 18–21, 19, 23–26, 29–30, 32–34, 33, 36–42, 36, 39
gamma ray, 21, 27–28, 30, 33, 41, 43
Gay-Lussac, Louis, 12–13, 13, 16
greenhouse gas, 52
Hertz, Heinrich, 22
Hertzian wave, 22
law of whole-number volumes, 13
Mendeleyev, Dmitri Ivanovich, 10, 14–16, 14, 17, 37 See also periodic table of the elements
neutron, 4–5, 15, 24, 26, 30, 32, 33, 34, 37, 40–43, 46, 47, 48–49, 52
nucleus, 20, 23–27, 24, 26, 28, 29–30, 29, 32, 34–35, 37, 40–43, 42, 46, 47, 49
periodic table of the elements, 14, 15–16, 15, 17
See also Mendeleyev, Dmitri Ivanovich
Plato, 6
proton, 5, 15, 23–24, 24, 26, 26, 29–30, 32–34, 33–34, 37, 40–43, 42, 46
quantum mechanics, 34, 37–38, 39, 43
radioactivity, 21, 27, 40–41, 43, 50–51, 51
Rutherford, Daniel, 16
Rutherford, Ernest, 20, 21–23, 24, 25–30, 26, 29, 32, 33, 34, 38, 41
Socrates, 6