Optics Without MathematicsSociety for promoting Christian knowledge, 1883 - 124 páginas |
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Página 3
... beautiful creation . We are so accustomed to the blessing of Light that we are scarcely able to value it as we ought . But let us try to think what our condition would be were light to be withdrawn from us - were the sun to be darkened ...
... beautiful creation . We are so accustomed to the blessing of Light that we are scarcely able to value it as we ought . But let us try to think what our condition would be were light to be withdrawn from us - were the sun to be darkened ...
Página 4
... beautiful world . We may say that it is But what is its nature ? But what is Light ? that by which we see . The true answer is probably far beyond the capacity of such a poor ignorant creature as man . We know nothing of the true nature ...
... beautiful world . We may say that it is But what is its nature ? But what is Light ? that by which we see . The true answer is probably far beyond the capacity of such a poor ignorant creature as man . We know nothing of the true nature ...
Página 13
... beautiful blue . And now we must make up our minds to learn a little about Angles . We need not alarm ourselves about them . We are pledged by our title to avoid mathematics as much as possible ; but OPTICS WITHOUT MATHEMATICS . 13.
... beautiful blue . And now we must make up our minds to learn a little about Angles . We need not alarm ourselves about them . We are pledged by our title to avoid mathematics as much as possible ; but OPTICS WITHOUT MATHEMATICS . 13.
Página 22
... beautiful hexagonal , that is six - cornered pattern , which may be changed in a moment by moving the object , the images at the same time moving in opposite directions . This beautiful little in- strument , the discovery of Dr ...
... beautiful hexagonal , that is six - cornered pattern , which may be changed in a moment by moving the object , the images at the same time moving in opposite directions . This beautiful little in- strument , the discovery of Dr ...
Página 64
... beautiful instrument in our hands , a very simple apparatus , yet quite suffi- cient to give us a delightful insight into the wonders of Creation . But we shall soon find it is a very limited one . Such a contrivance has some serious ...
... beautiful instrument in our hands , a very simple apparatus , yet quite suffi- cient to give us a delightful insight into the wonders of Creation . But we shall soon find it is a very limited one . Such a contrivance has some serious ...
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angles of incidence aperture axis beautiful called candle circle cloth boards colour concave lens concave mirror conjugate foci converging convex lens course crossing crystal crystalline lens curious curves dark direction dispersion distance Double Refraction edge equal angles equi-convex eye-lens Fcap feet focal image focal length form an image fraction front happens hole inches larger lenses look looking-glass magnifying power microscope minute moon Newtonian reflector NORTHUMBERLAND AVENUE object object-glass opposite optical parallel rays perfect perfectly picture plane mirror polarised position prism produce PROMOTING CHRISTIAN KNOWLEDGE properties of light proportion radiant radius rainbow ray passes reflected rays reflecting telescopes refraction retina reverse right angles seen shorter focus side sideways sine Sir EDMUND BECKETT spectrum speculum sphere spherical spherical aberration straight line suppose surface telescope thing tion turned undulations violet waves wonderful
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