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.
The most common is the optical microscope, which uses light to image the sample. Other major types of microscopes are the electron microscope, the ultramicroscope, and the various types of scanning probe microscope. Circa 1000AD â The first vision aid was invented (inventor unknown) called a reading stone.