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University of Oxford
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Dark side of blue light
There is scientific evidence that the blue light emitted from mobile devices and computer screens disrupts sleep by delaying the body clock.
In this activity students carry out an investigation using filters to find out what colour lenses would be most useful in glasses that prevent blue light from entering the eyes.
Learning Outcomes
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Students can describe how sleep is affected by light entering the eyes
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Students carry out an investigation into filters and record results
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Students write a scientific conclusion
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