Wireless TelegraphyC. Griffin, limited, 1906 - 116 Seiten |
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Seite 1
... lengths : they must all be based upon electromagnetic oscillations in the all - penetrating universal ether , in which they spread at the same enormous velocity of 186,000 miles per second . Equally ingenious with the theory was the ...
... lengths : they must all be based upon electromagnetic oscillations in the all - penetrating universal ether , in which they spread at the same enormous velocity of 186,000 miles per second . Equally ingenious with the theory was the ...
Seite 3
... the far slower oscillations of corre- spondingly greater wave length employed in wireless telegraphy . Electric and magnetic forces are mutually perpendicular ; and , 3 CHAPTER II THE ETHER AND ELECTRICAL OSCILLATIONS,
... the far slower oscillations of corre- spondingly greater wave length employed in wireless telegraphy . Electric and magnetic forces are mutually perpendicular ; and , 3 CHAPTER II THE ETHER AND ELECTRICAL OSCILLATIONS,
Seite 9
... length and direction ; in each the current is of equal amplitude and phase , but of opposite sign , regarded from a point at a great distance . The distance between the current elements is small in comparison with the wave length , as ...
... length and direction ; in each the current is of equal amplitude and phase , but of opposite sign , regarded from a point at a great distance . The distance between the current elements is small in comparison with the wave length , as ...
Seite 11
... length can be found from V n the known equation λ = TxV = ; wherein A , T , n , V express the wave length , time of vibration , number of vibrations per second , i.e. frequency , and velocity of transmission ( = 3 · 1010 cm ...
... length can be found from V n the known equation λ = TxV = ; wherein A , T , n , V express the wave length , time of vibration , number of vibrations per second , i.e. frequency , and velocity of transmission ( = 3 · 1010 cm ...
Seite 12
... length of which is equal to twice the length of the rod . In addition there are formed approximately harmonic upper vibrations , which , however , are negligible in practice , their intensity being inappreciably small and their ...
... length of which is equal to twice the length of the rod . In addition there are formed approximately harmonic upper vibrations , which , however , are negligible in practice , their intensity being inappreciably small and their ...
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aerial conductor aerial wire alternating current amplitude Analysis antenna apparatus Assoc Baltic stations BOVERTON REDWOOD Braun BRYAN DONKIN C₁ capacity centimetres Chemist Chemistry close coupling coherer coil Colours condenser circuit connected CONTENTS.-The coupled systems damping degree of coupling discharge Drude electric waves energy Engineers excited EXETER STREET FOURTH EDITION frequency Fully Illustrated GRIFFIN'S NAUTICAL SERIES h₁ h₂ Handbook Handsome Cloth Hertz induction inductor Inst J. J. THOMSON L₁ Large 8vo Large Crown 8vo Leyden Jar LIMITED LONDON CHARLES GRIFFIN loose coupling magnetic Manual Manufacture Marconi Marine maximum amplitude Mechanical Metallurgy Metals mounted multiplex multiplex antenna Numerous Illustrations ondameter oscillation circuit oscillations Petroleum Physik Plates portable stations Practical primary circuit PROF Professor radiation resistance resonance Revised SECOND EDITION secondary system self-induction sender and receiver Ships spark spark-gap Steam Steel STRAND Students switch syntony Technical Telefunken TEXT-BOOK THIRD EDITION Treatise vibrations volume wave length wireless telegraphy
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Seite 85 - SKETCHES OF BRITISH BIRDS IN THEIR HAUNTS. BY CHARLES DIXON. The Spacious Air. — The Open Fields and Downs. — In the Hedgerows.— On Open ; Heath and Moor. — On the Mountains. — Amongst the Evergreens. — Copse and Woodland. — By Stream and Pool. — The Sandy Wastes and Mudflats.— Sea-laved Rocks.— Birds of the Cities.— INDEX. "Enriched with excellent illustrations. A welcome addition to all libraries.
Seite 44 - GENERAL CONTENTS. — PART I. — Principles of Marine Propulsion. PART II. — Principles of Steam Engineering. PART III. — Details of Marine Engines : Design and Calculations for Cylinders, Pistons, Valves, Expansion Valves, &c. PART IV. — Propellers. PART V. — Boilers. PART VI. — Miscellaneous. "The Student, Draughtsman, and Engineer will find this work the HOST VALUABI.K HANDBOOK of Reference on the Marine Engine now in existence."— Marine Engineer.
Seite 54 - Rarely does it fall to the lot of a reviewer to have to accord such unqualified praise as this book deserves. . . . The profession generally have every reason to be grateful to Sir C. Le Neve Foster for having enriched educational literature with so admirable an elementary Text-book."— Mining Journal.
Seite 80 - GENERAL CONTENTS. — Introductory — THE COMPOSITION, MANUFACTURE, ASSAY, and ANALYSIS of PIGMENTS, White, Red, Yellow and Orange, Green, Blue, Brown, and Black— LAKES — Colour and Paint Machinery— Paint Vehicles (Oils, Turpentine, &c., &c.) — Driers — VARNISHES. " A THOROUGHLY PRACTICAL book, ... the ONLY English work that satisfactorily treats of the manufacture of oils, colours, and pigments.
Seite 80 - COLOURS, OILS, AND VARNISHES : A PRACTICAL MANUAL. BY GEORGE H. HURST, FCS, Member of the Society of Chemical Industry ; Lecturer on the Technology of Painters' Colours, Oils, and Varnishes, the Municipal Technical School, Manchester.
Seite 43 - British Trade Review. SECOND EDITION, Revised. With Diagrams. Price 2s. Latitude and Longitude: Mow to Find them. BY WJ MILLAR, CE, Late Secretary to the Inst. of Engineers and Shipbuilders in Scotland. " CONCISELY and CLEARLY WRITTEN . . . cannot but prove an acquisition to those studying Navigation."— Marine Engineer.
Seite 52 - RESEARCHES ON THE PAST AND PRESENT HISTORY OF THE EARTH'S ATMOSPHERE. Including the latest Discoveries and their Practical Applications. BY DR. THOMAS LAMB PHIPSON. PART I. — The Earth's Atmosphere in Remote Geological Periods. PART II. — The Atmosphere of our present period. Appendices; Index. "The book should prove of interest to general readers, as well as to meteorologists and other students of science.
Seite 82 - GENERAL CONTENTS. — Chemical Technology of the Textile Fabrics — Water — Washing and Bleaching — Acids, Alkalies, Mordants — Natural Colouring Matters — Artificial Organic Colouring Matters — Mineral Colours — Machinery used in Dyeing — Tinctorial Properties of Colouring Matters — Analysis and Valuation of Materials used in Dyeing, &c., &c. 11 This authoritative and exhaustive work . . . the HOST COMPLETE we have yet seen •on the subject.
Seite 69 - Oils, Soaps, Candles, Lubrication & Lubricants, India Rubber, . Painters' Colours, Oils, &c., Painters' Laboratory Guide, Painting and Decorating, Dyeing, .... Dictionary of Dyes, The Synthetic Dyestuffs, • Spinning, .... Textile Printing, . Textile Fibres of Commerce, Dyeing and Cleaning, . Bleaching, Calico- Printing, PROFS.
Seite 30 - Horublocks, and Bearing Springs.— Balancing.— Valve Gear.— Slide Valves and Valve Gear Details.— Framing, Bogies and Axle Trucks, Radial Axle Boxes.— Boilers.— Smokebox, Blast Pipe, Firebox Fittings.— Boiler Mountings.— Tenders.. Railway Brakes.— Lubrication — Consumption of Fuel, Evaporation and Engine Efficiency.