Monthly Archives: March 2013

Line Spectra

You learned about Newtonian colours in IGCSE – Newton split up white light with a prism and saw the seven spectral colours. These are more properly frequencies, or, in air, wavelengths of light in air between 400 (violet) and 700nm. … Continue reading

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Using sunlight, updated for 2017

How can we use what we know to allow us as a scientific community to make decisions based on scientific data, for example the use of solar cells as a replacement for other energy sources and for remote sensing? A … Continue reading

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