We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
464 TUTTLE November
equal to that of conventional 16-mm motion pictures even though twenty-nine thirtieths of every picture is missing.
The second part of the film shows that actually at least one hundred subject positions can be counted. This second part of the film was prepared as follows: We arranged to index mechanically an analyzing grid in small-step increments across a composite-picture plate. We could detect visually subject motion with each minute advance. As previously stated, it was found that the grid advance for which motion was apparent could be much less than one transparent slit width. We recorded multiple frames on conventional 16mm film for each of one hundred 0.0003-inch grid advances. In the film, the subject appeared to jump from one separate position image to another. The subject motion in this case was slow motion but the same theory would apply regardless of the subject velocity. (A 16-mm film demonstration was then made to show the effects outlined.)
The previous statement, that the real number of position pictures which exist on a composite plate is a function of emulsion resolution, can now be accepted readily. The actual number of jumps which one could record as shown on the film may only be limited by one's ability to index the scanning grid mechanically in extremely small steps. From the foregoing we now see that the performance of our previously described, single-dimension scanning camera was considerably better than claimed. It had been stated from the preliminary slit-width subject-position assumption that we had taken motion pictures at the rate of 16,000 per second. Since we have now demonstrated that one hundred or more position pictures are available for a grid movement of 0.030 inch, the 16,000 per second previously claimed was actually at least 48,000 frames per second. This more accurate picture rate of 48,000 frames per second adds considerable supporting evidence for a statement in our previous paper, namely, that we had stopped subject motion with the camera when its image speed on the film was 250 miles per hour. In a reverse sense, that statement also lends considerable weight to our argument here that we must have had a good many more than 16,000 frames per second recorded. Such image velocities would most assuredly have produced blurred images if pictures were taken at the 16,000 rate in the normal sense. It is impressive that 48,000 pictures per second can be taken with power supplied by only a small simple coiled spring, and it is a relief not to have to work under the handicaps of high-speed problems.