Friday 30 May 2014

Refraction

Today we did a few experiments to find out what refraction is, and to learn about lenses:

1. DESCRIBE Refraction
- experiment (pp92-93 in the sciPad)
- exercises (p94 in the sciPad)
- images etc. from the internet


Notice how the refracted (outgoing) light ray is at a different angle to the incident (incoming) light ray.

2. INVESTIGATE Lenses
- experiment (p95 in the sciPad)
- images etc. from the internet
- Mr Nicoll's glasses are convex lenses; what is wrong with his vision?

Convex lenses CONVERGE light rays to a focal point.

Concave lenses DIVERGE light rays away from each other.


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