A Flood Flashlamp for High-Speed Motion-Picture Photography

1959 ◽  
Vol 68 (9) ◽  
pp. 599-601 ◽  
Author(s):  
W. C. Fink
Keyword(s):  
Motion Picture ◽  
High Speed

A high-power stroboscope for use with a fastax high-speed motion-picture camera

1967 ◽  
Vol 45 (4) ◽  
pp. 249-250
Author(s):  
D. M. Harvey ◽  
M. W. Gunn ◽  
T. W. Hoffman
Keyword(s):  
Motion Picture ◽  
High Power ◽  
High Speed

scholarly journals Study of Lubricant Jet Flow Phenomena in Spur Gears

1975 ◽  
Vol 97 (2) ◽  
pp. 283-288 ◽  
Author(s):  
L. S. Akin ◽  
J. J. Mross ◽  
D. P. Townsend
Keyword(s):  
Motion Picture ◽  
High Speed ◽  
Drop Size ◽  
Gear Tooth ◽  
Jet Flow ◽  
Spur Gear ◽  
Spur Gears ◽  
Gear Teeth ◽  
Flow Phenomena ◽  
Oil Jet

Lubricant jet flow impingement and penetration depth into a gear tooth space were measured at 4920 and 2560 using a 8.89-cm- (3.5-in.) pitch dia 8 pitch spur gear at oil pressures from 7 × 104 to 41 × 104 N/m2 (10 psi to 60 psi). A high speed motion picture camera was used with xenon and high speed stroboscopic lights to slow down and stop the motion of the oil jet so that the impingement depth could be determined. An analytical model was developed for the vectorial impingement depth and for the impingement depth with tooth space windage effects included. The windage effects on the oil jet were small for oil drop size greater than 0.0076 cm (0.003 in.). The analytical impingement depth compared favorably with experimental results above an oil jet pressure of 7 × 104 N/m2 (10 psi). Some of this oil jet penetrates further into the tooth space after impingement. Much of this post impingement oil is thrown out of the tooth space without further contacting the gear teeth.

On the hydrodynamics of the polarographic maxima of the first kind

1976 ◽  
Vol 54 (3) ◽  
pp. 402-410 ◽  
Author(s):  
R. N. O'Brien ◽  
F. P. Dieken
Keyword(s):  
Resonant Frequency ◽  
Power Law ◽  
Motion Picture ◽  
Particle Motion ◽  
High Speed ◽  
Flow Patterns ◽  
Drop Surface ◽  
Mercury Surface ◽  
Rapid Movement ◽  
Large Particles

The mechanism of polarographic maxima of the first kind, positive and negative, was investigated. Tracks of suspended particles photographed at 16 fps were analysed and found to obey a power law consistent with increasing speeds towards the mercury drop surface pointing to even more rapid movement of the mercury surface. The motions of large particles trapped in specific parts of the flow patterns were photographed and their velocities analysed. Particle motion in the mainly stagnant layer below the drop outlined by interferometry was contrasted with the motion of particles in the streaming region. Finally particles deposited on the drop were used to show the motion of the surface of the bottom hemisphere of the drop. High speed motion picture photography was used to record the change of shape of the drop on sudden polarization and to find the resonant frequency of the drop.

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