Plik:Bell-gray-smoking-gun.png

Rozmiar pierwotny(881 × 659 pikseli, rozmiar pliku: 341 KB, typ MIME: image/png)

Opis

Opis
English: Comparison of the illustration of the telephone in Alexander Graham Bell's diaries and Elisha Gray's patent application.
Data
Źródło Photo illustration based on Alexander Graham Bell's notebooks and a patent caveat filed by Elisha Gray. Featured in Seth Schulman's book en:The Telephone Gambit and his notes at [1]
Autor Elisha Gray and Alexander Graham Bell

Licencja

Public domain

Ten materiał przeszedł do domeny publicznej w kraju pochodzenia, jak również w państwach i terytoriach, gdzie prawo autorskie wygasa w ciągu 70 lat po śmierci autora.


You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).

[[Category:History of technology]

Podpisy

Dodaj jednolinijkowe objaśnienie tego, co ten plik pokazuje
The needle in Gray's transmitter nearly touches the contact on the bottom of the glass. Bell's needle stays near the top of the water and the contact is off to the side.

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przedstawia

marzec 1876gregoriański

image/png

9ef2b591c9bed59f0160d831037a9bb9105c3f84

349 118 bajt

659 piksel

881 piksel

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Data i czasMiniaturaWymiaryUżytkownikOpis
aktualny22:46, 24 gru 2008Miniatura wersji z 22:46, 24 gru 2008881 × 659 (341 KB)AaronSw{{Information |Description={{en|1=Comparison of the illustration of the telephone in Alexander Graham Bell's diaries and Elisha Gray's patent application.}} |Source=Photo illustration based on [http://www.loc.gov/exhibits/treasures/images/85b/at0085bp0038

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