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intro1 - OVERVIEW OVERVIEW The Seven The Technological Ages...

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Unformatted text preview: OVERVIEW OVERVIEW The Seven The Technological Ages of Technological Man Man Technological Ages of Man Technological Man, The Hunter, Masters Fire The Farmer, The Smith, The Wheel The First Machine Age Intimations of Automation The Expansion of Steam The Freedom of Internal Combustion Electron Controlled THE FIRST AGE THE Man, The Hunter, Masters Fire Man, Hunter, Masters Fire Man, Material Ages Early Tools Fire Stone Age Tools Material Ages Material Eolithic Dawn Stone Age < 10,000,000 ybp origins of tool making Lower Palaeolithic Old Stone Age < 5,000,000 ybp Middle Palaeolithic Old Stone Age < 500,000 ybp Upper Palaeolithic Old Stone Age < 35,000 ybp Mesolithic 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 Neolithic Itinerant hunter tribes hand axes widespread agrarian revolution beginnings of towns copper articles in Egypt Tin in Mesopotamia Early Tools Early Pre - Homo erectus / Sapiens Ramepithecus 14,000,000 ybp - No Tools Related to great apes Australopithecenes 2,500,000 ybp - Walked upright Taung Man, Oldurai Gorge, Tanzania Dr. Louis Leakey (1925) Basalt Side-Chopper Basalt Fire Fire Making Fire Homo-erectus (600,000 BC) Charcoal layers in caves, China Charcoal Man’s greatest accomplishment ? Tasmanian & Andamanese tribes Using Fire Meteors, volcanoes, spontaneous Meteors, combustion, etc. combustion, Early tribal societies tended a fire Fire (continued) Fire Uses of Fire Warmth, cooking, protection, curing Focus of tribal life Hollowing out logs Firing pots, bricks, tiles Extraction of copper & iron Working of tools, weapons, ornaments Bases of metallurgical eras Making of glass Fire (continued) Fire Making Fire Impacting flint and iron or iron pyrites Occurred by chance ? Needs addition of fuel Generation of heat from friction Hard stick (fire drill) Softwood block (hearth) Intellectual - addition of weight, string, bow Fire Drills Fire First elementary machines ? Multi-components Translation to rotation Mechanical advantage with flywheel Bow later turned lathes in Iron age Bow later used as a weapon in late Bow Stone age (Tunisia) Stone First engineers ? Fire Drills (continued) Fire Stone Age Tools Stone Properties Density, hardness, durability Self-sharpening in some instances Difficult to manufacture First First Industry ? Tools-to-make-tools (5,000,000 ybp) Hammer stones & anvil stones (Tanzania) Stone Age Tools (continued) Stone Chronology Pebble tools (2,600,000 ybp) Bi-faced hand axes (500,000 ybp) Pebbles and quarried natural rock Blade tools (< 35,000 BC) Flakes of flint, chert, or obsidian Variants are gravers, shaves, planes, drills Grinding & polishing (< 12,000 BC) Region dependent (basalt & epidiorite) Peaked before Bronze age Stone Age Tools (continued) Stone Production Processes Basic core and flake tools Pressure flaking Percussion flaking Highly skilled trade (industry ?) Grinding and polishing Wetted sandstone or similar Sand was used as abrasive powder Final burnishing with a skin/hide ...
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