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Turnbull, David; Parisi, Alfio; Downs, Nathan – Teaching Science, 2010
Australia has one of the highest rates of incidence and mortality due to skin cancer in the world. Exposure to the sun also has a beneficial side. The beneficial effects are relatively few, but they are essential to a person's well being. It is well known that exposure to small amounts of UV radiation are beneficial for the human body and…
Descriptors: Investigations, Well Being, Cancer, Radiation
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Downs, Nathan; Parisi, Alfio – Teaching Science, 2010
A method is described for building a cost effective digital circuit capable of monitoring the solar radiation incident upon a remote solar cell. The circuit is built in two sections, the first, digitises the analogue voltage produced by the solar cell at a remote location and transmits the received signal to the second receiver circuit which…
Descriptors: Radiation, Science Instruction, Science Activities, Computer Uses in Education
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Downs, Nathan; Parisi, Alfio; McDonnell, Brendan; Thornton, Peter – Teaching Science, 2008
The article presents a technique to measure the ultraviolet index using a personal hand-held ultraviolet meter to illustrate concepts of physics. Measurements of the erythemally effective (sun-burning) direct solar beam, diffuse skylight, and total global ultraviolet irradiance are converted to daily ultraviolet index measurements. Daily…
Descriptors: Measurement Techniques, Prediction, Physics, Elementary Secondary Education