Today we use a book known as Bergey's Manual of Systematic Bacteriology . In this book, the kingdom of bacteria and cyanobacteria is named Prokaryotae. Gram Negative Bacteria of Medical and Commercial Importance Volume 2. Gram Positive Bacteria of Medical and Commercial Importance Volume 3. Remaining Gram Negative Bacteria Volume 4.
Light waves move through air in straight lines.
The eye receives the light wave on the back of the eye and sends a signal to the brain 3. Light waves can be bent by passing them through a clear medium that is thicker than air. Glass and water are two good examples. The distance between points 1 and 2 in diagram A. and B. are the same, but the distance between the light waves coming from points 1 and 2 in diagram B. is greater. Spreading the light waves apart enables us to see more detail.