He developed what became known as the Whitford reddening curve, which gauged interstellar light absorption and was a vital tool in mapping the distribution of stars in the Milky Way.
After slowly nudging itself into its final orbit about 200 miles above the surface, the spacecraft began in late February its $300 million mission of mapping the distribution and concentration of chemical elements and minerals on the planet's surface.
Noting the locations of ice-rafted debris is a very useful method of mapping the distribution of icebergs and thus the cold surface water occurring during glacial periods and at other times in the geologic past.
Pioneering in methods of mapping the distribution of many elements of South American culture, he succeeded in developing a remarkably clear reconstruction of cultural history in an area of considerable complexity.
An unmanned spacecraft will undertake a two-year exploration in orbit around the moon, mapping the distribution of minerals and elements.The IMF reported that Pakistan had asked it for help to cope with a balance-of-payments crisis.
The Mammal Society is mapping the distribution and density of cat populations across the UK.
Mapping the distribution of forests in urban areas is therefore important for good urban planning.
It is also fundamental in mapping the distribution of matter, and for understanding the evolution of the cosmos.
Anatomic imaging techniques may be insensitive to mapping the distribution of these tumour-specific characteristics.
Mapping the distribution of invasive alien plant species is significant for testing ecological hypotheses and for guiding effective management.
Mapping the distribution of phylogenetically distinct bacteria in natural environments is of primary importance to an understanding of ecological dynamics.
