Details of exhibit
- Exhibition:
- 1914 Fifty-ninth Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- Radiographs of Flowers
- Exhibitor:
- Dr. J. Hall-Edwards
- Section:
- Scientific and Technical Photographs, &c.
- Exhibit No.:
- 406
- Description:
- The radiography of flowers, insects, and other fragile objects by means of soft radiations has opened up a field for research, the boundaries of which it is difficult to define.
The possibilities of soft rays were first discovered by using tubes, supplied with a window made of lithium glass, which is ideal for this purpose.
The radiographs exhibited were not, however, produced by a Lindemann tube. The tube used was an old water-cooled "Müller," supplied with a "Bauer" regulator. Air was pumped in until the cathode stream was plainly visible, and until the equivalent spark gap measured less than two inches in length.
The flowers were arranged upon an Ilford X-ray plate, protected by the usual red and black envelopes. The distance between the tube and the plate was slightly under 3 feet, and the time of exposure was about one minute.
- Exhibit type:
- Photographic equipment and supplies
- Process:
- [Not Listed] ()
- Award:
- none
