Elements of Physical Manipulation, Part 1Hurd & Houghton, 1873 |
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Page 30
... diameter is a little greater than the opening of the diaphragm , and the outer diameter such that it will easily rest on C. Mark on it two lines at right angles to each other passing through its centre . Un- ravel a short piece of the ...
... diameter is a little greater than the opening of the diaphragm , and the outer diameter such that it will easily rest on C. Mark on it two lines at right angles to each other passing through its centre . Un- ravel a short piece of the ...
Page 37
... diameter , and 40 cm . long , closed at one end . Fasten to it a paper mil- limetre scale . This is placed upright in a stand , at a short dis- tance from a small telescope , by which the scale may be read with accuracy . On another ...
... diameter , and 40 cm . long , closed at one end . Fasten to it a paper mil- limetre scale . This is placed upright in a stand , at a short dis- tance from a small telescope , by which the scale may be read with accuracy . On another ...
Page 39
... diameter . A paper scale divided into tenths of an inch should be attached to A with gum tragacanth , although shellac , or even mucilage , answers tolerably . A long string wound spirally around the vessel will keep the scale in place ...
... diameter . A paper scale divided into tenths of an inch should be attached to A with gum tragacanth , although shellac , or even mucilage , answers tolerably . A long string wound spirally around the vessel will keep the scale in place ...
Page 45
... diameter , is thus obtained . We then have a spherical triangle , formed by the zenith Z , the pole P , and the sun S. In this , PZ is given , being the comple- ment of the latitude ; PS , the sun's north polar distance , is ob- tained ...
... diameter , is thus obtained . We then have a spherical triangle , formed by the zenith Z , the pole P , and the sun S. In this , PZ is given , being the comple- ment of the latitude ; PS , the sun's north polar distance , is ob- tained ...
Page 59
... diameter of the peg and the interval between the two steel plates . If desired , G may be a micrometer screw , by which this interval may always be accurately determined . It may be fastened in any position by a clamp or set screw . A ...
... diameter of the peg and the interval between the two steel plates . If desired , G may be a micrometer screw , by which this interval may always be accurately determined . It may be fastened in any position by a clamp or set screw . A ...
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Common terms and phrases
abscissas accuracy accurate amount angle of incidence angular aperture aperture Apparatus attached axis barometer beam brass Canada balsam centre coincide color column compute construct contour lines cross-hairs crystal curve determined diameter distance divided draw equal equation error Experiment eye-piece focus friction gives graduated circle hole horizontal hydrometer inches index of refraction instrument intervals latter length lens lenses liquid marked measure mercury meter method micrometer microscope millimetre minute mirror moving nearly Nicol's prism object observations obtained opthalmoscope paper parallel pass piece placed plane of polarization plate of glass polariscope polarized light position pressure reading reflected refraction remove rendered residual curve retina right angles scale scale-pan screw side slide slit specific gravity spherometer surface telescope temperature tenths tube turn varying velocity vernier vertical vibrations visible volume wave-length weight wire