An Elementary Treatise on Geometrical Optics ... |
From inside the book
Results 1-5 of 25
Page 36
... primary focus . The plane QOA is called the primary plane , and the point where the primary focal line cuts the primary plane may be evidently considered as a focus , or point of concen- tration , of the refracted or reflected rays ...
... primary focus . The plane QOA is called the primary plane , and the point where the primary focal line cuts the primary plane may be evidently considered as a focus , or point of concen- tration , of the refracted or reflected rays ...
Page 37
... primary plane , while that at q is a straight line in the primary plane . As the cutting plane passes from q , to q ,, the section is of an oval shape , first , when near q1 , having its longest diameter perpendicular to the primary ...
... primary plane , while that at q is a straight line in the primary plane . As the cutting plane passes from q , to q ,, the section is of an oval shape , first , when near q1 , having its longest diameter perpendicular to the primary ...
Page 38
... primary plane . There must therefore be some position of the cutting plane between 91 and 12 for which the diameters of the section in and perpendicular to the primary plane , are equal . In this position the section will be ...
... primary plane . There must therefore be some position of the cutting plane between 91 and 12 for which the diameters of the section in and perpendicular to the primary plane , are equal . In this position the section will be ...
Page 39
... primary and secondary foci in the three cases of a pencil obliquely in- cident on a plane refracting surface and on a spherical re- fracting and reflecting surface respectively . A pencil obliquely incident on a plane reflecting surface ...
... primary and secondary foci in the three cases of a pencil obliquely in- cident on a plane refracting surface and on a spherical re- fracting and reflecting surface respectively . A pencil obliquely incident on a plane reflecting surface ...
Page 40
William Steadman Aldis. Let QR be any other ray of the pencil in the primary plane , and let the corresponding refracted ray produced backwards cut Aq , in q ,. The limiting position of q , when R approaches A is the primary focus of the ...
William Steadman Aldis. Let QR be any other ray of the pencil in the primary plane , and let the corresponding refracted ray produced backwards cut Aq , in q ,. The limiting position of q , when R approaches A is the primary focus of the ...
Other editions - View all
Common terms and phrases
2nd edition 3rd edition 4th edition Aeneid angle of incidence astronomical telescope axis Book Camb Cambridge centre concave convex lens cos² Crown 8vo Demy 8vo diameter direction distance diverge emergence English equal eye-glass eye-lens eye-piece F. A. PALEY Fcap Fellow of St focal length foci formula French geometrical focus glass Grammar Greek Hence illumination image formed inches incident ray index of refraction J. H. FREESE John's College last Article late Fellow Latin lenses LL.D luminous point magnifying power Mathematical minimum deviation object object-glass obliquely parallel rays pass pencil pencil of light pencil of parallel perpendicular placed portion primary plane prism Professor radius ray of light reflected ray reflecting surface refracted ray refraction or reflection refractive index revised School screen Small post 8vo spectrum sphere spherical surface Translated triangle Trinity College v₁ vertex whence
Popular passages
Page 45 - THE CHURCH TEACHER'S MANUAL OF CHRISTIAN INSTRUCTION. Being the Church Catechism expanded and explained in Question and Answer, for the use of Clergymen, Parents, and Teachers. By the Rev. MF SADLER.
Page 17 - Exempla Latina : First Exercises in Latin Accidence. With Vocabulary. Crown 8vo, is. Easy Latin Exercises on the Syntax of the Shorter and Revised Latin Primer.
Page 39 - CHEVREUL on Colour. Containing the Principles of Harmony and Contrast of Colours, and their Application to the Arts ; including Painting, Decoration, Tapestries, Carpets, Mosaics, Glazing, Staining, Calico Printing, Letterpress Printing, Map Colouring, Dress, Landscape and Flower Gardening, &c. Trans, by C. Martel. Several Plates. With an additional series of 16 Plates in Colours, 7$.
Page 26 - ... by HT Ryde. Portraits of Robespierre, Madame Roland, and Charlotte Corday. 3 vols. The Restoration of Monarchy in France (a Sequel to The Girondists). 5 Portraits. 4 vols. The French Revolution of 1848.
Page 43 - ... of, Prime Minister to Henry the Great. With Notes and Historical Introduction. 4 Portraits. 4 vols. TAYLOR'S (Bishop Jeremy) Holy Living and Dying, with Prayers, containing the Whole Duty of a Christian and the parts of Devotion fitted to all Occasions.
Page 17 - FIRST LATIN READER. With Notes adapted to the Shorter Latin Primer and Vocabulary.
Page 44 - The Greek Testament : with a critically revised Text ; a Digest of Various Readings ; Marginal References to Verbal and Idiomatic Usage ; Prolegomena ;"and a Critical and Exegetical Commentary. For the Use of Theological Students and Ministers.
Page 42 - HOOPER'S (G.) Waterloo : The Downfall of the First Napoleon : a History of the Campaign of 1815.
Page 43 - DCL 2 vols. SIX OLD ENGLISH CHRONICLES : viz., Asser's Life of Alfred and the Chronicles of Ethelwerd, Gildas, Nennius, Geoffrey of Monmouth, and Richard of Cirencester.
Page 42 - Continuation from the Accession of Francis I. to the Revolution of 1848. 4 Portraits. 4 vols.