The Handy Math Answer Book

numerals used by, 12

problems with number

system, 13–14

pyramids, 334–35

timekeeping, 56

Eiffel, Gustave, 337

Eiffel Tower, 337, 338 (ill.)

Einstein, Albert, 31, 34, 279,

280, 281

Elamites, 8

Electric meters, 401–2

Electrical engineering,

339–40

Electricity, 279

Electromagnetic theories,

279

Electronic calculator,

359–60

Electronic Numerical Inte-

grator and Computer

(ENIAC), 362–63

Elementary operations, 141

Elements (chemical), 123

Elements(Euclid), 167

Elements of Algebra(Euler),

29

Elements (set), 284

Elizabeth I (queen of Eng-

land), 44

Elliptical geometry, 205–6

Empire State Building, 337

Encryption, 366

Energy, 278, 465–66

Energy-mass relation, 281

Engineering

aeronautical, 344–45

aerospace, 344

analyses, 325

bathtub curve, 344, 344

(ill.)

chemical, 341–42

chemical reactions, 342

civil, 330

crystal growth, 342

dam, 331–32

definition of, 323

dimensional analysis, 326

earthquakes, 332

electrical, 339–40

escape velocity, 345

extrapolation, 324

finite element analysis,

325, 326

fluid mechanics, 328–30,

329 (ill.)

Fourier, Jean Baptiste,

324

Fourier series, 324–25

Heaviside, Oliver, 328

imaginary numbers, 340

industrial, 342–44

interpolation, 324

Laplace transform, 327,

328

least squares method,

326–27

linear algebra, 331

materials science,

340–41, 341 (ill.)

modeling, 327 (ill.),

327–28

orbital mechanics,

344–45, 345 (ill.)

reliability, 343

resistor values, 340

simulation, 327 (ill.),

327–28

statistical process con-

trol, 343

statistical quality control,

343

surveyors, 330–31, 331

(ill.)

types of mathematics

used in, 323

Web site, 460–61

English customary system,

49–50

Entscheidungsproblem, 113

Enumeration, 127

Environment

air quality index, 320–21

computational ecology,

321

ecology, 318

environmental modeling,

321

Graunt, John, 319

logistic equation, 319–20

Lotka-Volterra Interspe-

cific Competition Logis-

tic Equations, 321

Petty, Sir William, 319

population growth,

318–19

survivorship curves, 320,

320 (ill.)

Environmental modeling,

321

Enzensberger, Hans Magnus,

456

Epicycles, 16

Epidemiology, 392

Epimenides the Cretan, 120

Equal sign, 91, 92, 93

Equality, 134

Equations, 10, 133–35

Equiangular triangle, 182,

182 (ill.)

Equilateral triangle, 182,

182 (ill.)

Eratosthenes of Cyrene, 83,

295

Escape velocity, 345

Escher, M. C., 376–77, 454

ETA Model, 314

Euclid, 104, 116, 334

contribution to geometry,

17

Elements, 167

fallacies in geometry, 120

Platonic solids, 186

postulates, 167

Euclidean geometry, 115,

168, 206

Euclidean space, 170–71

Eudoxus of Cnidus, 16, 17,

166, 210

Euler, Leonhard, 29–30, 77,

77 (ill.), 85, 106, 234–35

Elements of Algebra, 29

Euler’s method, 234–35

Eureka Alert(Web site), 459

Euro, 388, 389 (ill.)

European Center for Medi-

um-Range Weather Fore-

casts, 314

European Mathematical

Society, 447

Events, 246, 249

Exactly How Is Math Used in

Technology(Web site), 460

Exegetics, 134

490 Exercise, 406–7, 407 (ill.)

Handy Math BM 8/19/07 5:18 PM Page 490