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72
NEWTON & CO., Opticians to the Royal Family,
APPARATUS FOR USE WITH SCIENTIFIC LANTERNS.
Continued.
8504 Rotating Stand, with adjusting platform, to support lantern and
experimental apparatus , . . . . . . . . . . . . . £15 0
8505 Wright’S Refraction Trough, for experiments in refraction and total
reflection . . . . . . , . . . . • ■ • ■ • . . . . 110
8506 Air Lenses of Hollow Glass, to show that when plunged in a tank
of water a concave air lens acts like a convex glass lens does in air, and a convex air lens acts like a concave glass lens does in air. 3 in. diameter convex and concave . . . . . . . . . . . each 0 10 6
8507 Semi Cylindrical Hollow Trough, for filling with various liquids,
for experiments in refraction, 3 in. diameter . . . . . . . . 110
8508 Semi-Cylinder of Solid Glass, for use as above, 4 in. diameter . . 3 3 0
8509 Luminous Cascade with 6 feet of large india-rubber tube for
illustrating total reflection . . . . . ■ ■ ■ • • • . . . 0 17 6
8510 Glass Bulb for showing rainbow experiment with the lantern . . 0 0 6
8511 Bunsen’s Universal Clamp . 076
8512 Adjusting Table Stand on foot . 086
8513 Universal Rod Stand, with adjusting fittings for holding prisms,
mirrors, lenses, &o., vertically and horizontally . . . . . . . . 0 10 0
8514 Dense Flint Prism, face 2 in. by 1 in., mounted to fit rod stands . . 0 12 6
8 >15 Interference Prism, large size, mounted with screen to fit rod stands 0 17 6
8516 Plane Mirror, 5 in. by 4 in., mounted to fit rod stands . 0 6 6
8517 Focussing Lens, 4 in., mounted with metal screen to fit rod stands . . 0 12 6
8518 Focussing Lens, 5 in., mounted with metal screen to fit rod stands .. 110
8519 Convex Mirror, 6 in. (common), fitted to rod stand . . . . . . 0 5 6
8520 Concave Mirror, 6 in. (common), fitted to rod stand . 0 5 6
8521 Parallel-Beam Nozzle for giving a powerful parallel beam about 2 in.
in diameter, with adjusting tube . 1 . 2 2 0
8522 Parallel-Beam Nozzle for giving a powerful pencil of parallel light
about half an inch in diameter . 1 17 6
8523 Direct Double Reflecting Projector, for use with any lime-light,
lantern, for showing horizontal opaque experiments on the screen by reflected light, fitted with adjustable focussing lens . . . . . . .. r 8 10 0
8524 Lantern Phoneidoscope for showing the vibrations produced by j
sound waves in a soap film, for use with projector (No. 8523)
The images thrown by this and by Nos. 8562, 8563, and 8564 are projected in a line with the lantern , so that the lantern is not required to be at an angle with the screen.
8525 Newton’s Colour Disc, with multiplying wheel, arranged for show¬
ing composition of white light with the lantern
8526 Oscillating Reflector fitted to same multiplying wheel for re-com¬
posing the spectrum into white light on the screen
8527 Cylindrical Lens, in brass mount, with screen, for re-composing
spectrum, fitted for rod stand
8528 White Light Slide for showing the composition of white light on
the screen (Fig. 8528) . .
8529 Bet Of Mirrors, for re-composing the spectrum into white light on the
screen, fitted on brass stand, with universal joint to each mirror
2 10 0
1 10 0 0 12 6
2 0 0