This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
Summary
Description1903 Stone Wireless diagram.GIF
English: "The Stone Wireless Telegraph System", Electrical Review, October 24, 1903, page 594.
"a is a source of alternating current; k is a controlling key; M is a transformer for charging the condenser C; s is a discharge gap, and L a variable inductance for tuning. I(1) is the primary of a transformer, the secondary of which I(2) is connected in the aerial wire. When the key is closed the condenser is charged and discharges across the spark-gap through the oscillating circuit sI(1)LC. This circuit is so constructed that these oscillations are harmonic and, by means of the transformer M, they impress forced harmonic vibrations on the aerial wire. These are radiated through space and received by a similar arrangement of circuits, as shown in Fig. 2."
Date
Source
"The Stone Wireless Telegraph System", Electrical Review, October 24, 1903, page 594.
Author
Work for hire
Licensing
Public domainPublic domainfalsefalse
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:1903_Stone_Wireless_diagram.GIF
Captions
Add a one-line explanation of what this file represents
Items portrayed in this file
depicts
media type
image/gif
checksum
e8229681e65c4a230ac1302b78fb55cda38d8ed8
determination method: SHA-1
data size
11,462 byte
height
273 pixel
width
503 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time
Thumbnail
Dimensions
User
Comment
current
14:24, 23 May 2015
503 × 273 (11 KB)
Thomas H. White
User created page with UploadWizard
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):