Wireless Telegraphy Principles and Coherer History Explainer
A technical course survey traces early wireless ideas from water wave analogies to the spark gap and coherer. It outlines experiments by Hertz and successors, the evolution of radio theory, and how high frequency currents fuse filings to enable reception and signaling.
MENTIONED IN THIS ARTICLE
Mrof. A. Rhigh
Italy
Rees
Varley Bod
Vrof E. Granly
Univérsity of Pare
Userebe
Ube
Tost
Oliver Teden
Har Sur
Erento
Sprentink
Hohndienrhaenhanien
Fey
Waren
Lee
Correlated Terms in Early Electrical Theory and Components
A dense catalog of electrical concepts and components including coupling, mutual oscillation, conductors, and units. It lists terms such as Coulomb, Ampere, Current in Circuit, rectifying effects, crystal detectors, damping, and various crystal and material names alongside brief, sometimes garbled explanations.
MENTIONED IN THIS ARTICLE
Dame
Airis
Ieee
Anil Erie
Uriel
Drexel
Ate
Fiobarhael
Igor Waveraston
How to Build Tie Steps at Little Cost for Amateurs
A guide explains affordable DIY amplifying equipment construction. It describes materials including rheostats, transfer units, transformers, tubes, and wiring methods. Emphasis on low cost, practical assembly, and ensuring reliable operation with hand drawn copper wiring.
MENTIONED IN THIS ARTICLE
Chan
Redaun
Toni
Tess
H. Bubes
Wiring and testing a two stage amplifier transformer's setup
A 1922 note explains wiring diorama of two stage amplifier transformer with negative potential on grids and cautions on testing leads before permanent connections. It advises testing each transformer separately, using non signal input to avoid hum, and pairing with common voltages around 20 volts for good results. It also references Science and Invention Trust reports noting automatic recording devices similar to phonographic tech.
MENTIONED IN THIS ARTICLE
Ivorn
Fragmented OCR item hints at a parish election listing
The readable fragments describe a local vote and listing related to a parish or community election. Names and places are garbled but the core mentions a vote, a street, and a timer or tally associated with the event.
Fragmented Text About Warping and Sapper Crafting
A damaged OCR fragment discusses warping, sapper work, and testing methods for a project. It mentions lighting, blades, and payed tasks, with unclear references to individuals, places, or dates. The passage reads as a rough, noncohesive note rather than a complete report.
Early radio receivers and how to hear the whistle clearly
The piece surveys beginner radio talk about what receivers to buy and how to receive broadcasts. It notes costs from five dollars to hundreds, installation tips, and factors affecting reception such as transmitter power and distance. It discusses legal limits and the need for proper equipment alignment for best results.
MENTIONED IN THIS ARTICLE
Tinost New
Imack
Opera Lon
Jolla Qarta
United States
Tekal
Trouy
Ubin
Persay
Kerma
Maxim
Nbool Smithinga
Tony
Momar
Binet
Stalin Linn
Radio use sparks mixed progress and danger across towns
Amid erratic broadcasts and growing interest in open air concerts, residents report rising radio use and plans for amplifiers, amid safety warnings about live wires and high tension equipment. Authorities note educational benefits from radio and phonograph programs, while several incidents highlight risks to bystanders and infrastructure.
Insulation Removal Described In Wiring Task
The excerpt describes removing insulation to reach a winding and wires. It mentions contact points and a tedious operation. It references a rotor and an associated person, with unclear names and sequence, detailing the mechanical steps and possible difficulty in handling the coil.
MENTIONED IN THIS ARTICLE
Alan
Ain Grate
Fragmented OCR note on improvised surface and scraping method
The readable text describes an improvised block with unclear labeling, mentioning a woolen block, paper glued on, and a scraping method. It references an erect line with edges and comments on conduct and effectiveness of scraping, but many terms are garbled.
MENTIONED IN THIS ARTICLE
Phebe
Also Mentioned on This Page
8. Gernsback
Science and Invention and
Radio News
Wirness
Cireparks
Fightin
Rigaale
Mansell
Wiivrense
Partiries
Farelen
Fae
Holt
Miri
Winkfeld Secor
E. EB
Roy
Dubes
Alia
Tress
Enrone
Yucatan
Aneny
Urehuh Sr
Wei
Eaprye Cibhon
Wen
Ted
Cael
Seins
Crevedin
Pel
Lorie Rile Shelly
Faye Heen
Powell
Ae Gerald
Kimoltinta Ie
Abelle
Artian Bart
Artian Bieki
Watterson
Agauder
Witswonth
Chile
Unem
Weiler
Seattie
Eub-Narcand Childern
Endio
Schureh Tower
Shroveport
Ian
Fli
Yealing
Ile Haver
Valent Sigtta
Talis
Meany
Hug Nik
Colona
Penonslvanis
Eadio
Tise Lng
Geltyanirg
Tnary Dtor
FOX
Thalall
Sas
Hmanufacturers
Ranto Cone
Anrica
Uaghanaa
Wingbeee
Spee
Apnazutny Co
Tornaline CO
ACME
Atanai
WSK
Toreay
Weinvite
Cnr Nio
Texas
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!