NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 5 results Save | Export
Peer reviewed Peer reviewed
Direct linkDirect link
Downs, Nathan; Larsen, Kim; Parisi, Alfio; Schouten, Peter; Brennan, Chris – Teaching Science, 2012
A practical exercise for developing a simple cost-effective solar ultraviolet radiation dosimeter is presented for use by middle school science students. Specifically, this exercise investigates a series of experiments utilising the historical blue print reaction, combining ammonium iron citrate and potassium hexacyanoferrate to develop an…
Descriptors: Chemistry, Foreign Countries, Science Curriculum, Investigations
Peer reviewed Peer reviewed
Direct linkDirect link
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
Peer reviewed Peer reviewed
Direct linkDirect link
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
Peer reviewed Peer reviewed
Direct linkDirect link
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
Peer reviewed Peer reviewed
Direct linkDirect link
Downs, Nathan; Turner, Joanna; Parisi, Alfio; Spence, Jenny – Teaching Science, 2008
A technique for using highlighter ink as an ultraviolet dosimeter has been developed for use by secondary school students. The technique requires the students to measure the percentage of colour fading in ink drawn onto strips of paper that have been exposed to sunlight, which can be calibrated to measurements of the ultraviolet irradiance using…
Descriptors: Secondary School Students, Measurement, Foreign Countries, Light