by msander | Mar 4, 2021 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
Introduction Hans Christian Oersted (1777–1851), a Danish physicist, was performing an experiment in 1820 when he noticed that whenever an electric current from a battery was switched on or off, a nearby compass needle was deflected. Through additional experiments,...
by msander | Feb 18, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
Introduction Measuring tiny volumes with precision and accuracy requires a micropipet. In the biology lab, micropipets are used for preparing and loading DNA samples, microscale experiments and the preparation of many types of samples. These applications rely on good...
by msander | Jan 25, 2019 | Gr. 11-12 Biology
Introduction Deoxyribonucleic acid (DNA) is the genetic material found inside the nucleus of eukaryotic organisms. The information coded by DNA determines the characteristics of an organism, including its size, shape and other unique features. How can this genetic...
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