Abstract

The Brown Recorder which has been factory equipped with a ball point pen functions very poorly as the pen skips and at times does not write at all. The holder that contained the pen was weighted with several heavy 1/4 in. iron bolts, as shown in Figure 1, with the result that the pen performs very satisfactorily. This device has been successfully employed on our recorder for several months.

Analyzing field recorded videograms: equipment and method

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Appl. Opt. 25(24) 4579-4582 (1986)

Point-spread functions of a polarizing microscope equipped with high-numerical-aperture lenses

Rudolf Oldenbourg and Peter Török
Appl. Opt. 39(34) 6325-6331 (2000)

Direct matched-filtering of pen recordings using sodium light

P. R. Armstrong and A. P. Anderson
Appl. Opt. 14(10) 2337-2339 (1975)

An Improved High Speed Recording Spectrophotometer

George R. Harrison and Edward P. Bentley
J. Opt. Soc. Am. 30(7) 290-294 (1940)

Improved Thermoplastic-Photoconductor Devices for Holographic Recording

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