Good but bittersweet news for fans of The Americans. The hit FX drama series, which focuses on Russian spies living undercover as Americans in the 1980s, is currently in its fourth season, with three more episodes to go, and FX has renewed the critically acclaimed show for not one but two more seasons!
Experiments that take advantage of natural occurrences are quasi-experiments, for example, comparing achievement level of first-born children with that of later-born children; or comparing student performance at two schools, one of which has a lower student-teacher ratio.
Richard Feynman described just such an experiment in 1963: the double slit. interference experiment that you studied in introductory physics.1;2. The double slit experiment (DSE) was ï¬rst reported to the Royal Soci-. ety of London by Thomas Young in 1803. Young did the experiment with. light waves (photons) and measured the interference bands by observing the.