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DISPERSION OF COLOR
(P 38 01)

Apparatus:
GSN 246
POG 465
POG
POG 312
POG 490
KAL



Adhesive magnetic board
Ray box, 6V 20 W
Plane mirror for color
Prism, glass flint
Projection wedge
Connecting lead
Power supply

1
1
2
1
1
2
1

The lamp covered by a mirror for color mixing is set up in the upper left-hand
corner of the board.

The ray of "white" light passes through the optical prism placed directly in front
of it. In the process the light ray is broken down into the spectral colors, red
being refracted the least and violet the most.

Optics Board Type |

1


SPECTRAL COLORS CANNOT BE
FURTHER DISPERSED
(P 38 02)

Apparatus:
GSN 246
POG 465
POG 099.01
POG 312
POG 310.01
POG 490
KAL 60/5A




Adhesive magnetic board
Ray box, 6V 20 W
Plane mirror for color
Prism, glass flint
Prism, right angle

Projection wedge
Connecting lead
Power supply

1
1
2
1
1
1
2
1

The light is set up in the lower left-hand corner of the board.
The rays of "white" light are broken down into spectral colors upon passing
through the optical prism.
The edge of a second prism is placed in the rays' path as shown in the figure.
The individual light rays are partially refracted and partially reflected. In neither
case can a further dispersion of the spectral colors be observed.
Spectral colors thus cannot be further dispersed.

Note:
The intensity of the reflected and refracted colors as well as the degree of color
saturation can be influenced by rotating the right-angled, equal-sided prism

2

| Optics Board Type

CONVERGING SPECTRAL COLORS
TO MAKE WHITE
(P 38 03)

Apparatus:
GSN 246
POG 465
POG 099.01
POG 312
POG 240.02
POG 251
POG 490
KAL 60/5A



Adhesive magnetic board
Ray box, 6V 20 W
Plane mirror for color
Prism, glass flint
Plan-convex, lens model
Semicircle, lens model
Projection wedge
Connecting lead
Power supply

1
1
2
1

1
1
1
2
1

The lamp containing a diaphragm with one slit is set up in the lower left-hand
corner of the board.
A continuous spectrum is generated with the aid of the prism. A biconvex lens
is formed using the planoconvex lens and the semi-circular model and placed
as shown in the figure. Upon passing through the convex lens, the spectral
colors are combined to form a mixed color. When a continuous spectrum enters
the lens, the resulting mixed color is white.

Optics Board Type |

3


MIXED COLOR OF A PARTIAL SPECTRUM
(P 38 04)

Apparatus:
GSN 246
POG 465
POG 099.01
POG 312
POG 240.02
POG 251
POG 490

POF 220.01
KAL 60/5A






Adhesive magnetic board
Ray box, 6V 20 W
Plane mirror for color mixing
Prism, glass flint equilateral
Plan-convex, lens model
Semicircle, lens model
Projection wedge
Color filter, red
Connecting lead
Power supply

1
1
2
1
1
1
1
2
1

A lamp containing a diaphragm with one slit is set up in the lower left-hand

corner of the board. A continuous spectrum is generated with the aid of the
optical prism.
A biconvex lens consisting of a planoconvex lens and a semi-circular model is
positioned in the path of the rays as shown in the figure. The resulting mixed
color is white.
The spectral colors violet and then the violet-blue area of the spectrum are
covered up one after the other with the edge of the slit in the diaphragm. The
remaining colors refracted by the lens result in a mixed color.

The experiment may be repeated beginning with red or the slit can be
positioned so as to allow only the central area of the spectrum is allowed to
pass through.

4

| Optics Board Type


COMPLEMENTARY COLORS
(P 38 05)

Apparatus:
GSN 246
POG 465
POG 099.01
POG 312
POG 310.03
POG 240.02
POG 251
POG 490

POF 220.01
KAL 60/5A





Adhesive magnetic board
Ray box, 6V 20 W
Plane mirror for color
Prism, glass flint
Prism, right angle
Plan-convex, lens model
Semicircle, lens model
Projection wedge
Connecting lead
Power supply

1
1
1
1
1
1
1
1
2
1

A continuous spectrum is generated with the aid of the light and the prism.

A biconvex lens is formed using the planoconvex lens and the semi-circular
model, these are arranged as shown in the figure. The biconvex lens focuses
the spectral colors, resulting in white. The right-angled, equal-sided prism is
placed between the first prism and the lens for example within the red area of
the spectrum as shown in the figure.
This area of the spectrum is refracted by the prism. Two complementary colors
result when the rays pass through the lens. By moving the prism further into
the spectrum, other pairs of complementary colors can be created.

Note:
This experiment may be carried out beginning with the violet end.

Optics Board Type |

5


SUBTRACTIVE MIXING COLORS
(P 38 06)

Apparatus:
POF 251.01

6

Color filter disc, Substractive

1 set



The three color filters with the subtractive primary colors cyan, magenta and
yellow are partially overlapped and held against a bright surface.



Where the filters overlap, the additive primary colors red, blue and green can
be observed.

| Optics Board Type


ADDITIVE MIXING COLORS
(P 38 07)

Apparatus:
GSN 246
POG 465
POF 210
POG 099.01
POG 490
KAL 60/5A

Adhesive magnetic
Ray box, 6V 20 W
Color filter, Aditive
Plane mirror for color
Projection wedge
Connecting lead
Power supply

1
1
1
3
1
2
1




The additive color filter is inserted in front of the ray box.
Use the side that emit divergent ray and projects a divergent light beam in the
three additive primary colors red, green and blue.



Using the three mirrors, the three colored beams are made to overlap on the
projection wedge.
This results in the three subtractive colors cyan, magenta and yellow being
produced.





White results where all three additive colors overlap.

Optics Board Type |

7