Light: A Course of Experimental Optics, Chiefly with the LanternMacmillan, 1882 - 367 σελίδες |
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Σελίδα 2
... inches diameter , for 3 - inch condensers . BC is a 3 - inch brass tube 3 inches long , which should screw into a collar at B , as it will be required to unscrew from this into the polariscope elbow , to be hereafter described . Near ...
... inches diameter , for 3 - inch condensers . BC is a 3 - inch brass tube 3 inches long , which should screw into a collar at B , as it will be required to unscrew from this into the polariscope elbow , to be hereafter described . Near ...
Σελίδα 3
... inches in diameter , and has screwed into it at the back end the cell of the plano - convex lens G of 5 inches focus , with the plane side towards the slide - stage . At the other end screws on a collar in which is fixed the nozzle N ...
... inches in diameter , and has screwed into it at the back end the cell of the plano - convex lens G of 5 inches focus , with the plane side towards the slide - stage . At the other end screws on a collar in which is fixed the nozzle N ...
Σελίδα 4
... inches , and this will give suitable discs for any screen distance ranging from 5 to 20 feet . If the general working distance is longer , say from 20 to 25 feet , or more , a somewhat longer focus may be preferable , making the back ...
... inches , and this will give suitable discs for any screen distance ranging from 5 to 20 feet . If the general working distance is longer , say from 20 to 25 feet , or more , a somewhat longer focus may be preferable , making the back ...
Σελίδα 7
... inches , and not less , for optical purposes : if there is no assis- tant to turn off the oxygen when not wanted , it had better be a little more for any lecture work . The size named is no more than sufficient , with a little ...
... inches , and not less , for optical purposes : if there is no assis- tant to turn off the oxygen when not wanted , it had better be a little more for any lecture work . The size named is no more than sufficient , with a little ...
Σελίδα 9
... inches with full bags and taps closed , gradually diminished to little more than 4 inches as the gases exhausted : also that it was very difficult to get the same pressure with both gases , whatever arrange- ment was adopted . He ...
... inches with full bags and taps closed , gradually diminished to little more than 4 inches as the gases exhausted : also that it was very difficult to get the same pressure with both gases , whatever arrange- ment was adopted . He ...
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adjusted analyser aperture apparatus appear arranged axes axis bands beam beautiful bi-axial black card blue calcite Cambridge centre circular Clifton College colour convergent crossed Crown 8vo crystal dark diffracted direction disc dispersion double refraction Edition effects ELEMENTARY ether experiment Extra fcap film focus focusing give glass green heat HISTORY Illustrations interference J. P. MAHAFFY lantern late Fellow law of sines lens lenses lime-light lines matter mica mirror molecules motion nearly Newton's Newton's rings Nicol Nicol Prism nozzle numerous object optic axis optical stage ordinary Owens College parallel particles perpendicular phenomena plane plane-polarised polariscope polarised position prism produced Professor quarter-wave plate quartz rays retardation revised right angles rings rotated School screen seen selenite shown slide slide-stage slit solution spar spectra spectrum surface theory thickness thin tion tourmaline TREATISE Trinity College tube uni-axial velocity vibrations violet wave-length waves
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