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DISTANT ECHO [3 records]
Record 1 - internal organization data 2017-02-20
Record 1, English
Record 1, Subject field(s)
- Radar, Radio Guidance and Goniometry
- Marine and River Navigation Aids
Record 1, Main entry term, English
- second-trace echo
1, record 1, English, second%2Dtrace%20echo
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
[An echo] received from a contact at an actual range greater than the radar range setting. 2, record 1, English, - second%2Dtrace%20echo
Record number: 1, Textual support number: 1 CONT
If an echo from a distant target is received after the following pulse has been transmitted, the echo will appear on the radarscope at the correct bearing but not at the true range. Second-trace echoes are unusual, except under abnormal atmospheric conditions, or conditions under which super-refraction is present. 2, record 1, English, - second%2Dtrace%20echo
Record 1, French
Record 1, Domaine(s)
- Radar, radioguidage et radiogoniométrie
- Aides à la navigation fluviale et maritime
Record 1, Main entry term, French
- écho de deuxième balayage
1, record 1, French, %C3%A9cho%20de%20deuxi%C3%A8me%20balayage
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2009-10-15
Record 2, English
Record 2, Subject field(s)
- Astrophysics and Cosmography
- Radiological Physics (Theory and Application)
Record 2, Main entry term, English
- background cosmic noise
1, record 2, English, background%20cosmic%20noise
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
What was the origin of that background cosmic noise?... astrophysicists proved that it was the last echo of the great explosion and a final trace left by the initial radiation. Taking as reference the most distant galaxies which move away from us at great speed and whose red radiation is reaching us now, they concluded that the event had occurred about 13. 7 billion years ago. 1, record 2, English, - background%20cosmic%20noise
Record 2, French
Record 2, Domaine(s)
- Astrophysique et cosmographie
- Physique radiologique et applications
Record 2, Main entry term, French
- bruit de fond cosmique
1, record 2, French, bruit%20de%20fond%20cosmique
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1989-09-18
Record 3, English
Record 3, Subject field(s)
- Radar, Radio Guidance and Goniometry
Record 3, Main entry term, English
- distant echo
1, record 3, English, distant%20echo
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, French
Record 3, Domaine(s)
- Radar, radioguidage et radiogoniométrie
Record 3, Main entry term, French
- écho lointain
1, record 3, French, %C3%A9cho%20lointain
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
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