The New Encyclopædia Britannica, Volume 2Encyclopædia Britannica, 1992 - 32 pages |
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Page 290
... abrasives goes back to earliest man's rubbing of one hard stone against another to shape a weapon or a tool . The Bible mentions a stone called shamir that was very probably emery , a natural abrasive still in use today . Ancient ...
... abrasives goes back to earliest man's rubbing of one hard stone against another to shape a weapon or a tool . The Bible mentions a stone called shamir that was very probably emery , a natural abrasive still in use today . Ancient ...
Page 292
... abrasive product being the one with coarser wires . PROPERTIES of Abrasives One of the most important properties necessary in an abrasive material is hardness . The abrasive must be harder than the material it is to grind , polish , or ...
... abrasive product being the one with coarser wires . PROPERTIES of Abrasives One of the most important properties necessary in an abrasive material is hardness . The abrasive must be harder than the material it is to grind , polish , or ...
Page 293
... abrasive used , with the sharp ends facing out . The process can also control the spacing of the grains . This is an advantage in that wide spacing helps to alleviate loading problems when grinding soft , stringy , or gummy materials ...
... abrasive used , with the sharp ends facing out . The process can also control the spacing of the grains . This is an advantage in that wide spacing helps to alleviate loading problems when grinding soft , stringy , or gummy materials ...
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abrasive acid administration agricultural Andhra Arabian Sea army Asia Assam Bay of Bengal Bengal Bihār Bijapur Bombay Brahman brick British Buddhist capital cement central centre century chemical coast culture Deccan defeated Delhi district Dutch dynasty east eastern economic empire feet forests Gandhi glass governor Gujarat Gulf hills Hindu human-factors engineering important India Indian Ocean Indonesia Indus industry Islām islands Java Kashmir king kingdom land language Madhya Pradesh Madras Mahārāshtra major manufacture Marāṭhā ment miles military minister monsoon Mughal Mughal Empire Muḥammad Muslim Nāga northern operations research organization Orissa oxide Pakistan percent period philosophy plains Plateau political population Pradesh problems production province Punjab region reign religious rivers rule ruler Sikhs Sikkim Singh sodium sulfur sultanate Sumatra systems engineering Tamil temperature territory tion trade traditional tribes Uttar Pradesh Valley Vijayanagar village western