Light: A Course of Experimental Optics, Chiefly with the LanternMacmillan, 1882 - 367 σελίδες |
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Σελίδα 3
... adjusted that when the tube is run right out the lens G is about 3 inches from the bottom of the slide - stage ( which will focus a very small disc ) , and have a backward travel of about 1 inches ; and this should be finally done by ...
... adjusted that when the tube is run right out the lens G is about 3 inches from the bottom of the slide - stage ( which will focus a very small disc ) , and have a backward travel of about 1 inches ; and this should be finally done by ...
Σελίδα 7
... adjustments . Only the best bags are worth having , and such will last for years if the gas is properly washed , and all taps or metal fittings cleaned and oiled every now and then . Oxygen ought to be passed through two wash - bottles ...
... adjustments . Only the best bags are worth having , and such will last for years if the gas is properly washed , and all taps or metal fittings cleaned and oiled every now and then . Oxygen ought to be passed through two wash - bottles ...
Σελίδα 9
... adjustment of the taps is necessary every now and then . A valued correspondent found by experiment that a pressure equal to 9 inches with full bags and taps closed , gradually diminished to little more than 4 inches as the gases ...
... adjustment of the taps is necessary every now and then . A valued correspondent found by experiment that a pressure equal to 9 inches with full bags and taps closed , gradually diminished to little more than 4 inches as the gases ...
Σελίδα 10
... adjusted to a given pressure , that pressure will never vary so long as a pressure not inferior is kept up behind it . Both gases can thus be adjusted equally to any pressure which the weights at com . mand will enable the bags to keep ...
... adjusted to a given pressure , that pressure will never vary so long as a pressure not inferior is kept up behind it . Both gases can thus be adjusted equally to any pressure which the weights at com . mand will enable the bags to keep ...
Σελίδα 11
... adjusted ; and the greatest advantage of the regulators referred to , is , that when this has once been effected it can be retained with certainty throughout the experiments , leaving the demonstrator or his assistant free ( beyond turn ...
... adjusted ; and the greatest advantage of the regulators referred to , is , that when this has once been effected it can be retained with certainty throughout the experiments , leaving the demonstrator or his assistant free ( beyond turn ...
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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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Σελίδα 26 - Parts, in boxes, is. each. A and B papers, of nearly the same difficulty, are given so as to prevent copying, and the Colours of the A and B papers differ in each Standard, and from those of every other Standard, so that a master or mistress can see at a glance whether the children have the proper papers.
Σελίδα 10 - HODGSON -MYTHOLOGY FOR LATIN VERSIFICATION. A brief Sketch of the Fables of the Ancients, prepared to be rendered into Latin Verse for Schools.