Lee de Forest

Active selection:
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.

Buy this image

Available worldwide for immediate download up to 4,257 x 3,758 pixels.

 

  1. Register (in 30 seconds) or log in.
  2. Select image(s).
  3. Click on Buy selection.
  4. Choose intended use or request a quote.
  5. Confirm terms & conditions.
  6. Pay by card, PayPal or bank transfer.

Can we help?

For volume pricing, high-res previews, credit terms, or any other queries, please contact us.

Links