In Britain, the Glastonbury Canal is believed to be the first post-Roman canal and was built in the middle of the 10th century to link the River Brue at Northover with Glastonbury Abbey, a distance of about 1.75 kilometres (1,900 yd).
A. Yes, but not in detail. âMany scientists use electron, scanning tunneling and atomic force microscopes to view individual DNA molecules,â said Michael W. Davidson, curator of the National High Magnetic Field Laboratory at Florida State University.
Fluorescent microscopes allow scientists to see two different proteins at same location in a cell using red and green markers that overlap to form a yellow color. Electron microscopes show the three-dimensional features of a cell's surface. The compound light microscope, using only white light, does not possess those capabilities. However, electron microscopes and fluorescent microscopes range in price from tens of thousands to hundreds of thousands of dollars, while a compound microscope currently can be purchased for as little as $100.