Man's physical universe

xanabras

INDEX 827

Periodicity, 568

Periodic law, 567-568

Permanent hardness, 758

Perspiration deodorants, 608

Pervel, 665

Petrified wood, 169

Petroleum, 189-191, 695-703

exploration, 482

geology, 171

prospecting, 697

Pharmacopoeia, 788

Phase, 240, 241

Phenol, 676, 771

Phenolic resinoids, 675-677

Phenothiazine, 775

Phonoautograph, 452

Phonodeik, 452

Phonograph, 452-453

electric, 534

Phosphates, 760, 761

Phosphorescence, 401, 406

Phosphorus, 647, 734, 736

Photoconductive devices, 542

Photoelectric

cells, 71, 453

effect, 539-543

Photographic

developers, 583-584

fixer, 584

Photography, 583

colored, 414-415

Photons, 389

Photosynthesis, 719-724

Phototubes, 539-541

Photovoltaic cells, 543

Physical properties, 233-239

Physics,

defined, 39-40

survey of, 91-100, 205-249, 274-554

Physiological catalysts, 738-739

Pickling, 627

Pig iron, 635

Pigments, 413-414

Pilotage, 378-379

Pitch, 373

of sound, 450-451, 467

Pitot tube, 369

Planets, the, 101-109

Planetesimal hypothesis, 128, 136

Plasmolysis, 247

Plastacele, 670

Plaster of Paris, 651

Plasticity, 237

Plasticizer, 680-681

Plastics, 669-670, 674-687

in airplanes, 360-361

Plexiglass, 682

Pliolite, 707

Pluto, 109

Poisons

contact, 752-754

stomach, 752-753

Polarization, 593

Polarized light, 421, 431

Polaroid

glasses, 427-428

lamps, 428

screens, 423-424, 427, 429-430

Pola screens, 427

Polymeric amides, 684-686

Polymerization, 68, 613, 675-687, 693,

699, 709, 711, 721

Polymethyl methacrylate, 682-683

Polystyrene plastics, 677

Polyvinyl

alcohols, 681-682

resins, 678

Portland cements, 651-652

Positional isomerism, 618

Positrons, 574

Potassium, 734

deposits, 187

Potential difference, 492, 497-498

Power, 289

conservation of, 297-306

consumption of, 297-298

developing machines, 322-327

Precession, 98

Precious stones, 187-188

Precipitate, 588

Precipitation, 588

Precipitron, 280, 492

Prejudice, 44-46

Pressure

of gases, 208-209

of liquids, 215

Primary colors, 413, 414

Principle, Bernoulli's, 369-371

Probability, theory of, 236

Process, 226

chemical, 226

physical, 203, 226, 233

Producer gas, 629

Promoters, 657

Properties

chemical, 205, 559

physical, 203, 205, 206, 233-239

Proprietary drugs, 788

Protective films, 727

Proteins, 735-736

Proton, 571, 574, 601-609

acceptor, 601-604

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