Least diffusion circle
in the configuration of rays emerging from a spherocylindrical lens system, the place where diverging rays of the lens first forming a line image are balanced by converging rays of the second lens.
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..