Lee de Forest
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Caption | Lee de Forest. Long distance wireless transmission became possible with the improvement made to the radio valve by Lee de Forest in 1906. Here are four versions of his valve. De Forest is shown below with the transmitter he used in 1906 to broadcast the voice of the famous tennor, Enrico Caruso. |
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Creator | English School (20th century) |
Artwork medium | printed material |
Credit | © Look and Learn |
Search stock images by keyword | Lee de Forest radio valves communications engineer inventor technology |
Stock image ref | Sizes available | Views |
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B001365 | Hi-res: 4,257 x 3,758 pixels Lo-res: 1,064 x 940 pixels |
660 |
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