Speed |
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Encoded speed of light in air. Add 299800 to get km/sec scale. |
Beat |
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Number of beats per second between forks. |
Cor |
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Correction for temperature to standard fork in beats per second. |
Day |
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Day of experiment in progress (June 5 = 1). |
Diff |
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Difference between greatest and least values of revolutions. |
Qual |
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Quality of the image I. The more distinct it is the higher
the quality (3 = good, 1 = poor). |
Disp |
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Displacement of image I from slit S in micrometer divisions. |
Image |
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Micrometer position of deflected image. |
Radius |
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Radius of measurement, in feet. |
Revs |
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Number of revolutions per second. |
Screw |
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Value of one turn of the screw in millimetres. |
Slit |
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Micrometer position of slit. |
Tday |
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Time of day observation recorded (AM = 1 hour after sunrise,
PM = 1 hour before sunset). |
Temp |
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Air temperature in degrees Fahrenheit. |
Remarks |
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1. Electric light. |
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2. Frame inclined at various angles. |
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3. Set micrometer and counted oscillations. |
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4. Oscillations of image of revolving mirror. Probably PM. |
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5. Readings taken by Lieut. Nazro. |
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6. Readings taken by Mr. Clason. |
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7. Mirror inverted. |
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8. Mirror erect. |