| | The Hutchinson Encyclopedia: Fleming, Williamina Paton Stevens (1857-1911)@ HighBeam Research (Site not responding. Last check: 2007-10-07) |
 | | The Hutchinson Encyclopedia: Fleming, Williamina Paton Stevens (1857-1911)@ HighBeam Research |
 | | She was an assistant to Edward Pickering, director of the Harvard College Observatory, Cambridge, Massachusetts, with whom she compiled the first general catalogue classifying stellar spectra, the distinctive pattern produced by each star when its light is passed through a prism. |
 | | Fleming developed her spectral-classification system by studying photographs of the spectra obtained using prisms placed in front of the objectives of telescopes (the lenses or mirrors that collect... |
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