Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Charles W. McMillin; Fred C. Billingsley; Robert E. Frazer
    Date: 1973
    Source: Wood Science, Vol. 6(3): 272-277
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (1.82 MB)


    The recent introduction of accessory instrumentation capable of display at television scan rates suggests a broadened application for the scanning electron microscope - the direct observation of motion (dynamic events) at magnifactions otherwise unattainable. In one illustrative experiment, the transverse surface of southern pine was observed when subjected to large compressive forces perpendicular to the grain. Tracheid walls were seen to bend or distort sideways and ultimately rupture. In a second example, a single tracheid of southern pine was shown to fail while under torsional stress and unwind into a ribbonlike element - a structure that provides the coherence necessary for strength development in refiner groundwood pulp. Complementing the dynamic applications of the fast-scan EM are newely developed techniques by which pictures can be stored, processed, and displayed by a digital computer system. Digital data processing can sharpen picture contrast, detect and display differences between pictures, and perform computational analysis.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    McMillin, Charles W.; Billingsley, Fred C.; Frazer, Robert E. 1973. Fast-scan em with digital image processing for dynamic experiments. Wood Science, Vol. 6(3): 272-277

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page