intro1 - Technological Ages of Man u Man, The Hunter,...

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Unformatted text preview: Technological Ages of Man u Man, The Hunter, Masters Fire Farmer, The Smith, The Wheel u The First Machine Age u Intimations of Automation u The Expansion of Steam u The Freedom of Internal Combustion u Electron Controlled u The OVERVIEW The Seven Technological Ages of Man Man, Hunter, Masters Fire u Material THE FIRST AGE Man, The Hunter, Masters Fire u Early u Fire u Stone Material Ages Eolithic Dawn Stone Age Lower Palaeolithic Old Stone Age < 1 0 , 0 0 0 , 0 0 0 y b p origins of tool making < 5,000,000 ybp Middle Palaeolithic O l d S t o n e A g e < 500,000 ybp Upper Palaeolithic Old Stone Age < 35,000 ybp Itinerant hunter tribes hand axes widespread Mesolithic Neolithic New Stone Age < 6,000 BC Aeneolithic Bronze Age < 3,000 BC Iron Age < 1,500 BC origins of blade technology Middle Stone Age < 12,000 BC agrarian revolution beginnings of towns copper articles in Egypt Tin in Mesopotamia Ages Tools Age Tools Early Tools u Pre - Homo erectus / Sapiens u Ramepithecus t 14,000,000 ybp - No Tools t Related to great apes u Australopithecenes t 2,500,000 ybp - Walked upright t Taung Man, Oldurai Gorge, Tanzania t Dr. Louis Leakey (1925) 1 Basalt Side-Chopper Fire u Making Fire t Homo-erectus (600,000 BC) t Charcoal layers in caves, China t Man’s greatest accomplishment ? t Tasmanian & Andamanese tribes u Using Fire t Meteors, volcanoes, spontaneous combustion, etc. t Early tribal societies tended a fire Fire (continued) u Uses of Fire u Making t Warmth, cooking, protection, curing t Focus of tribal life t Hollowing out logs t Firing pots, bricks, tiles t Extraction of copper & iron t Working of tools, weapons, ornaments t Bases of metallurgical eras t Making of glass Fire Drills u First Fire (continued) Fire flint and iron or iron pyrites u Impacting t Occurred by chance ? t Needs addition of fuel u Generation of heat from friction t Hard stick (fire drill) t Softwood block (hearth) t Intellectual - addition of weight, string, bow Fire Drills (continued) elementary machines ? u Multi-components u Translation to rotation advantage with flywheel u Bow later turned lathes in Iron age u Bow later used as a weapon in late Stone age (Tunisia) u First engineers ? u Mechanical 2 Stone Age Tools u Properties u Chronology t Density, hardness, durability t Self-sharpening in some instances t Difficult to manufacture u First Stone Age Tools (continued) Industry ? t Tools-to-make-tools (5,000,000 ybp) ybp) t Hammer stones & anvil stones (Tanzania) t Pebble tools (2,600,000 ybp ) ybp) t Bi -faced hand axes (500,000 ybp) Bi-faced ybp) w t Blade tools (< 35,000 BC) w w t Grinding & polishing (< 12,000 BC) w w Stone Age Tools (continued) u Production Processes t Basic core and flake tools w w w t Grinding and polishing w w w 3 ...
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This note was uploaded on 06/12/2011 for the course EGN 3000 taught by Professor Staff during the Spring '09 term at University of South Florida.

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