Paper F–6: High-Speed Motion-Picture Photography of Microscopic Phase Changes

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: orig-research
Abstract: A desire to study the growth of microscopic bubbles during nucleate boiling led to the use of high-speed photography. Development of the techniques for providing sufficient illumination to photograph at high speed with high magnification while minimizing vibration of the equipment led to the present apparatus. Usable motion pictures have been obtained at 6000 frames/sec with a 66× enlargement of the image on the 16mm negative. A Wollensak Fastax WF-15 camera with Goose controls and 1000-cycle signal generator was employed. The camera viewed through a metallographic microscope mounted horizontally and aimed through a thin glass window in the test cell. The magnification on the film was varied from 3× to 66× by varying the eyepieces and objectives and by adjusting the distance between the microscope and the camera. Arc illumination was from 10-mm rare-earth cored carbons operating at 30 amp. All equipment was mounted on railroad rails cast in concrete. The apparatus is a powerful tool for phenomena which are rapid, and interesting from the microscopic viewpoint. It is used now for studies of dropwise condensation, bubble growth during electrolysis, bubble growth from gases dissolved in liquids, the melting of solids and the freezing of liquids.
Publication Date: 1962-01-01
DOI: 10.5594/J18125XY
Link: https://doi.org/10.5594/J18125XY
Author(s): J. E. Benjamin, J. W. Westwater

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J. E. Benjamin and J. W. Westwater; Paper F–6: High-Speed Motion-Picture Photography of Microscopic Phase Changes, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18125XY

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J. E. Benjamin and J. W. Westwater; Paper F–6: High-Speed Motion-Picture Photography of Microscopic Phase Changes, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18125XY

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<span class="citation">J. E. Benjamin and J. W. Westwater; <cite>Paper F–6: High-Speed Motion-Picture Photography of Microscopic Phase Changes</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18125XY" target="_blank" rel="noopener">https://doi.org/10.5594/J18125XY</a></span>

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<li>
J. E. Benjamin and J. W. Westwater; <cite id="bib-10-5594-j18125xy">Paper F–6: High-Speed Motion-Picture Photography of Microscopic Phase Changes</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18125XY</span>
</li>