File:Captain H.B. Jackson R.N. (1855-1929) in 1897 (cropped).jpg

Original file ‎(3,214 × 2,878 pixels, file size: 2.17 MB, MIME type: image/jpeg)

Summary

Description
English: Captain Henry Bradwardine Jackson R.N. (1855-1929) in 1897. From: Pocock, R. F. & Garratt, G. R. M. (1972), The Origins of Maritime Radio: The Story of Introduction of Wireless Telegraphy in the Royal Navy Between 1896 and 1900 H.M. Stationery Office.
Date
Source Photo of illustration from original book
Author R.F. Pocock; G.R.M. Garratt
Other versions
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: Captain H.B. Jackson R.N. (1855-1929) in 1897.jpg

Licensing

Public domain
This work created by the United Kingdom Government is in the public domain.

This is because it is one of the following:

  1. It is a photograph taken prior to 1 June 1957; or
  2. It was published prior to 1974; or
  3. It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1974.

HMSO has declared that the expiry of Crown Copyrights applies worldwide (ref: HMSO Email Reply)
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See also Copyright and Crown copyright artistic works.

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inception

31 December 1972

exposure time

0.04 second

f-number

5.1

focal length

13.6 millimetre

ISO speed

800

media type

image/jpeg

instance of

photograph

checksum

23439fd01d8a1e75bc18b0d6823e6130c0c9ba12

determination method: SHA-1

data size

2,275,595 byte

height

2,878 pixel

width

3,214 pixel

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current19:27, 14 May 20233,214 × 2,878 (2.17 MB)KognosFile:Captain H.B. Jackson R.N. (1855-1929) in 1897.jpg cropped 7 % horizontally, 17 % vertically using CropTool with precise mode.
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