Slit with symmetric aperture, in black metal frame on stem. With micrometer screw.
Holder: 130 mm dia.
Slit width: 0-3 mm
Slit height: 25 mm
Shaft: 10 mm dia.
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Holding rod with 4-mm connector sockets to accommodate and connect components with two plugs matching a 19-mm or 50-mm grid or conductor loops for verifying the Biot-Savart law. Suitable for both 4-mm laminated plugs as well as 4-mm safety ...
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Lenses in black frame on stem. With a lens protection ring for preventing damage to the lens.
Specifications
Holder: 130 mm diameter
Shaft: 10 mm diameter
Focal length: +150 mm
Aperture: 50 mm diameter
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Precision glass polarisation filter, which is in a mounting on a steel rod and can be rotated on a ball-bearing. With angular scale marked in 1° intervals.
Aperture: 38 mm dia.
Extinction coefficient: >99.9 % at λ = 450 &ndash ...
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