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indicates that the link between the sensing cells of
the retina and the region of the brain that
processes optical information is not fixed at birth
but is formed by a learning process.
If the spectacles are then removed after being worn
for a long time, the world appears upside-down
again. However, perception then returns to normal
relatively quickly.
4. Operation
•
When adjusting the prisms, do not touch the
glass surfaces.
•
Ensure that the prisms are set parallel to each
other.
Adjusting the prisms:
To make the image appear upside-down, set the prisms
as shown above (side view of spectacles)
To invert the image right to left, set the prisms as shown
above (top view of spectacles)
Should the prisms loosen in the frame after a
while, tip the frame forward and tighten the
securing ring.
Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Deutschland • www.elwedidactic.com
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Deutschland • www.3bscientific.com
1. Drawing and writing on a blackboard
2. Reading "mirror writing"
3. Seeing, grasping and balancing objects
4. Throwing and catching a ball
5. Fill a container with water and pour water into
another container
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Technische Änderungen vorbehalten
© Copyright 2007 3B Scientific GmbH
5. Sample experiments
6. Maintenance
To clean use a soft damp cloth.
Only use mild cleaning agents that do not
contain alcohol or solvents.
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