On May 19, 2011, the Mississippi River reached a historic crest at Vicksburg. By early June flooding had receded but water remains high.
STELLA: A DIY Handheld Scientific Instrument
If you are looking for a do-it-yourself (DIY) handheld spectrometer, you need to meet STELLA. STELLA (Science and Technology Education for Land/Life Assessment) is a portable scientific instrument developed by