Essentials of physicsW.B. Saunders, 1896 - 319 pages |
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Page 149
... rays will be parallel , as D G , B H , etc. Suppose divergent rays are emitted from some point , L ( Fig . 60 ) . Then the angles of incidence are smaller than in the above case , and FIG . 60 . K therefore the corresponding angles of ...
... rays will be parallel , as D G , B H , etc. Suppose divergent rays are emitted from some point , L ( Fig . 60 ) . Then the angles of incidence are smaller than in the above case , and FIG . 60 . K therefore the corresponding angles of ...
Page 162
... rays diverge from L ( Fig . 77 ) . The angle of incidence is here greater than that for a ray parallel to the axis , FIG . 77 . DAB F S as SB . The lens has not the power to bend the emergent ray down to F , but only to 7. All rays from ...
... rays diverge from L ( Fig . 77 ) . The angle of incidence is here greater than that for a ray parallel to the axis , FIG . 77 . DAB F S as SB . The lens has not the power to bend the emergent ray down to F , but only to 7. All rays from ...
Page 172
... rays are called calorific , or ultra - red , rays . They have longer wave- lengths than the luminous rays . Chemical Effects . - Light acts as a chemical agent on many sub- stances . It blackens chloride of silver . A paper wet with ...
... rays are called calorific , or ultra - red , rays . They have longer wave- lengths than the luminous rays . Chemical Effects . - Light acts as a chemical agent on many sub- stances . It blackens chloride of silver . A paper wet with ...
Contents
BOOK I | 17 |
The Attractions of Matter | 26 |
Matter Force and Motion | 33 |
37 other sections not shown
Common terms and phrases
acid ampères angle aperture armature attraction axis barometer battery body called camera carbon cell chemical ciliary muscle circuit coil collodion colors concave condensing conductor connected containing convex convex lens cornea crystalline lens Describe direction disk dynamo electricity electro-magnet electrolysis eye-piece film focus force galvanometer gases gelatin glass gun-cotton H₂SO heat heliostat hydrometer induced currents induction instrument intensity iron Jefferson Medical College Leclanché cell lens lenses Leyden jar light liquid luminous machine magnet magnified Medical metal microscope mirror molecules motion needle negative object optic paper paper negatives parallel passes Philadelphia picture placed platinum polarized pole presbyopia pressure principle prints prism produced quantity rays reflected refraction resistance retina silver solid sound spectrum Spherical aberration substances surface Surgery telescope temperature Text-Book thermometer tion transmitted tube vapor velocity vessel vibrations vitreous humor voltaic volume weight wire