He tells us, for instance, how an abstract painting by the writer, artist and teacher Lawrence Gowing enabled Gombrich to see the pattern on his own kitchen floor for the first time and how observations made during the course of his habitual walks on Hampstead Heath, of everything from the vapor trails of jet airplanes to a child's balloon, afforded him fresh insights into theories of perception.
Further, at lower jet feed rates, the depth of erosion increased and the low energy abrasive particles along trailing edge of jet plume get enough time to erode the material that results in variation of slope of kerf walls and hence, overall geometry.
Far below I could see the condensation trail of a single‐engine jet aircraft.
Last week the criss-crossed vapour trails of MiG jets hung once again over the Panjshir valley.
Framed by the vapour trail of a trio of jet-planes performing a victory flypast into the sunset, the building stands like a triumphal gateway to some promised land of Socialism with Chinese characteristics.
As usual when there are no clouds over the city, the high, white streaks of jet trails stretched like chalk smears across a blackboard.
Amid the glittering impassivity of the many buildings across the East River, an empty spot had appeared, as if by electronic command, beneath the sky that, but for the sulfurous cloud streaming south toward the ocean, was pure blue, rendered uncannily pristine by the absence of jet trails.
The music dwindles to a jet trail of noise, which Randall carefully raises in pitch with a foot pedal as the sound fades away.
The acoustic radiation is particularly sensitive to the jet-plate distance due to the exponential radial decay of near-field disturbances; the relative axial position of jet and trailing edge is shown to play a comparably minor role.
Though the world's largest producer of jet engines, G.E. has trailed other suppliers of avionics in overall sales, behind Honeywell, Rockwell Collins and Thales, all of whom competed for the C919 business.
The planes then began to trail the jet at a distance of 10 mile.
