Optics Without MathematicsSociety for promoting Christian knowledge, 1883 - 124 páginas |
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Página 17
... edge or cir- cumference , or through it , is considered to be IP B P everywhere perpendicular to that circumference , inside or out ; and the angles of incidence and reflection will be equal on each side of it as before . Let me show ...
... edge or cir- cumference , or through it , is considered to be IP B P everywhere perpendicular to that circumference , inside or out ; and the angles of incidence and reflection will be equal on each side of it as before . Let me show ...
Página 43
... edge of the basin ; pour in water gently so as not to shift the coin , and you will find it come gradually into view . Or , the converse of this , set a candle in such a position with regard to a basin that the shadow of the edge shall ...
... edge of the basin ; pour in water gently so as not to shift the coin , and you will find it come gradually into view . Or , the converse of this , set a candle in such a position with regard to a basin that the shadow of the edge shall ...
Página 45
... of course come to an edge where they meet , opposite to which would be some kind of back ; it does not matter of what form . Such a block of glass or any transparent medium is called a OPTICS WITHOUT MATHEMATICS . 45.
... of course come to an edge where they meet , opposite to which would be some kind of back ; it does not matter of what form . Such a block of glass or any transparent medium is called a OPTICS WITHOUT MATHEMATICS . 45.
Página 46
... that in whatever direction the prism may be placed , edge up , down , or sideways , the final deviation will be the same , towards the thickest part , but following the position of the prism , 46 OPTICS WITHOUT MATHEMATICS .
... that in whatever direction the prism may be placed , edge up , down , or sideways , the final deviation will be the same , towards the thickest part , but following the position of the prism , 46 OPTICS WITHOUT MATHEMATICS .
Página 48
... edge outwards as above , then if we were to make the prisms of the opposite form , the thickest having the most inclined sides and the outermost posi- tion , an infinite number of these would form a spherical lens as before , but of the ...
... edge outwards as above , then if we were to make the prisms of the opposite form , the thickest having the most inclined sides and the outermost posi- tion , an infinite number of these would form a spherical lens as before , but of the ...
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Términos y frases comunes
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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