Induction Coils in Electromagnetic Theory and Practice
A historical survey explains induction coils, magnetic fields, and eddy currents. It covers how circuits cutting lines of force induce currents, the role of primary and secondary windings, laminated armatures, and methods to reduce eddy currents. It notes sparks, insulation, and coil construction for ignition and signaling uses.
MENTIONED IN THIS ARTICLE
Mueshat
Recentral Sharma
Fir
Anparmius
Berwins
Inductance Theory and Transformer Core Types
The text explains inductance theory, induction, and spark effects in coils. It discusses iron core balls, interrupter mechanisms, and auto disconnection parts. It defines open and closed core transformers, field circuity, and methods to reduce sparking with primary condensers and spark suppressors.
MENTIONED IN THIS ARTICLE
Boyde
Tothonda
Utterrat
Notable Fragments on Electricity and Chemistry Terms
A collage of scientific terms and notes covers negative and positive electrical poles, Centigrade and Fahrenheit scales, centripetal and centrifugal forces, condensers and condensers in series, and various chemical substances including copper pyrites and chromic acid. It blends definitions, device names, and partial explanations.
MENTIONED IN THIS ARTICLE
Colts Paralel
Eethoe
Calle Sérlom
Nince Hills
Reading
Plcor
Caghim
A. W
Making a tuning coil for radio receivers 1922
The article from 1922 Befence and Invention describes constructing a tuning coil for crystal detector receivers. It details coil design, winding on a cardboard tube, insulation, a three slide tuning mechanism, contact springs, and methods to adjust inductance for wavelengths up to 1000 meters.
MENTIONED IN THIS ARTICLE
Aedoehen Jong
Dtinmatar
Loop Aerial Construction Progress and Instructions
The loop aerial is developing from a made unit toward long distance use. It outlines the basic build with two lengths of wood and wire, joined at the center, showing how to locate the neutral wire and final tuning. The text notes experiments for amateurs near Browlewing stations and provides drawing references for assembly and alignment.
MENTIONED IN THIS ARTICLE
Alrestion
Marconi
Caprici
KO Wal
Chern
Chom
Everalartis
Feaba
Rayey
Simplest Radio Receiver Construction Guide
A fragment describes a basic crystal detector crystal switch aerial ground wire and detector connected across the circuit to form a simple radio receiver. It notes sensitive crystals and aerial types and mentions conditions for radio reception at an experiment site.
MENTIONED IN THIS ARTICLE
Ned Gemand
Veceiver
Puliery
Estes
Pressure Detector Tisserompenying Drafts Alien Inventions
A flawed OCR summary describes a pressure detector device with multiple construction methods. It details shaping brass pieces, inserting a Kil piece, bending a semicircle, drilling a hole, and assembling a case. It notes the detector uses an electric cell image and a coil, indicating an experimental alarm or sensor design. The tone mimics a speculative inventor's notes with rough steps and anticipated uses.
MENTIONED IN THIS ARTICLE
Phiet
Sihhan Brass
Paris
Adda
Short Talks With the Beginner on Radio Aids
A historical guide for radio beginners discusses common misconceptions about technical terms, the use of primer dictionaries, and the basics of wave lengths. It compares two plates or tuning methods, explains string analogy, and notes practical aspects of wire lengths and tuners for amateur reception.
MENTIONED IN THIS ARTICLE
Teresa
Atria
Dria
Tonka Lvo
Colle
Korie
Contel
Aeglern
Jane Hlatanco
Crecaniva
Btarconteria Atlovile
Glanes Way Bay
Radio boom spurs Arctic stations and home experiments
A lengthy survey of early 1920s radio activity notes Arctic station efforts northeast of Norway and widespread domestic experiments. Mentions radio links for air travel, demonstrations in New York, and growing college courses via radio, with hobbyists in amateur clubs testing long distance reception and car mounted transmitters. Several named individuals and organizations appear amid technical forecasts.
Also Mentioned on This Page
Gernaback
Science and Invention and
Radio News
Slectro
Sil
Rere
Dresent Hell
Sondenser
Hilli
Br H
Wiefield Secor
Thelere
Widera
Ders
Tyne
Sen
Ae ‘Lovey
Canonellane
Berl Heck
Sclerne
Tyrentian
U.S
Roth Radio Equipment Company
Kesting Bldg
Ervay
Live Gal Sta
Waller
Texas
Norway
She Vlerey
Chhrting
New York
Tandred Ronan
Noir
Commonwealth of New Zouk
Seth
Largast
Sadio
Targ Traund
Bute Tuha
Grons
Énid Oren Y. Young
Bond of Allectite
Reaebos Corporation of America
Yoon Baget
Imigber
Echools
Flehl
AV. J. Chandler
Nazations
Turebaslig
Radio Equintient
Gage
Arget Guadas
United Statan
Daporix
Francisca
Aadio Club
Radio Lavita
Jolu
Wien
Silentkis
Tahambgose- Eleming
London University
Squier
Edward Dallia
Quincy Point
Maou
New York State
Dept. Wholesale and Retail
Tivanda
Remler
Gurexpert
Carl Newton Ounien
This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!