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Creeper was an experimental computer program written by Bob Thomas at BBN in 1971. [2] Its original iteration was designed to move between DEC PDP-10 mainframe computers running the TENEX operating system using the ARPANET , with a later version by Ray Tomlinson designed to copy itself between computers rather than simply move. [ 3 ]
This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
Typical 20th-century reaper, a tractor-drawn Fahr machine. A reaper is a farm implement that reaps (cuts and often also gathers) crops at harvest when they are ripe. Usually the crop involved is a cereal grass, especially wheat. The first documented reaping machines were Gallic reapers that were used in Roman times in what would become modern ...
Most American geography and social studies classrooms have adopted the five themes in teaching practices, [3] as they provide "an alternative to the detrimental, but unfortunately persistent, habit of teaching geography through rote memorization". [1] They are pedagogical themes that guide how geographic content should be taught in schools. [4]
Geological Map of Ohio from "Geography of Ohio", 1923. In the United States, geologic maps are usually superimposed over a topographic map (and at times over other base maps) with the addition of a color mask with letter symbols to represent the kind of geologic unit.
Heating of solids, sunlight and shade in different altitudinal zones (Northern hemisphere) [5] A variety of environmental factors determines the boundaries of altitudinal zones found on mountains, ranging from direct effects of temperature and precipitation to indirect characteristics of the mountain itself, as well as biological interactions of the species.
There are two other small bird families with treecreeper or creeper in their name, which are not closely related: the Australian treecreepers (Climacteridae) the Philippine creepers (Rhabdornithidae) The wallcreeper was originally described in the family Certhiidae but is now considered as more closely related to the nuthatches.
In physical geography, a dell is a grassy hollow—or dried stream bed—often partially covered in trees. [1] [2] In literature, dells have pastoral connotations, frequently imagined as secluded and pleasant safe havens. The word "dell" comes from the Old English word dell, which is related to the Old English word dæl, modern 'dale'.