Cipher seals

  1. 42
  2. 69
  3. 420
  4. 690

Quiet field

742

The year was full. This aperture was quiet.

The surviving record for 742 is not blank. It does not, under the categories declared before this sweep, resemble a cluster of instruments, laws, or named firsts that would promote the year. Quiet is a description of the aperture, not of the century.

  • Tang Xuanzong’s later reign
  • Umayyad caliphate in its last decade before 750
  • Traditional, contested birth year of Charlemagne

The aperture

Quiet under the declared categories. Retained as a denominator year.

Regions checked

  • Europe
  • Middle East and North Africa
  • East Asia
  • South Asia
  • Africa
  • the Americas
  • Central Asia

Included / excluded

  • Excluded: Charlemagne born 742 as a locked object. The birth year is traditionally 742 or 747 and is contested. Promoting it would be a number-search on a famous 42. It is a miss.

41 | 42 | 43

Same century. Same research threshold. Matched frames. Neither pane brighter except that the middle year is the selected aperture.

741

Neighbor

741: death of Charles Martel. Neighbor can be louder in Frankish history.

742

Aperture

Quiet under the declared categories. Retained as a denominator year.

743

Neighbor

743: Tang and Frankish administration continue. Not empty.