| Accession Number | P05110.005 |
|---|---|
| Collection type | Photograph |
| Object type | Black & white - Print silver gelatin |
| Maker |
O'Sullivan, Albert Washington |
| Place made | Germany: Berlin |
| Date made | April 1945 |
| Conflict |
Second World War, 1939-1945 |
| Copyright |
Item copyright: Copyright expired - public domain
|
An H2S radar image taken from a cathode-ray tube display monitor on board a Mosquito aircraft of ...
Description
An H2S radar image taken from a cathode-ray tube display monitor on board a Mosquito aircraft of 139 Pathfinder Squadron RAF. The aerial view, from 24000 feet, shows the areas affected by fires after a bombing raid on the town of Magdeburg, Germany, on the night of 20-21 April 1945. H2S relies for its operation on the discovery that a beam of short-wave electric energy is "echoed" back to its point of origin in varying degrees of intensity by objects on the ground. Water gives no echo, and the strongest come from built-up areas such as towns and cities. From the installation in the aircraft is transmitted a beam of radar waves: the returned echo passes through various stages and finally appears on the face of a cathode ray tube in the form of a map.