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Glass fiber
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<p>Glass fiber is a material consisting of numerous extremely fine <a href="/facts/Fiber/ttkxAFBu">fibers</a> of <a href="/facts/Glass/hezRsAGf">glass</a>. </p><p>Glassmakers throughout history have experimented with glass fibers, but mass manufacture of glass fiber was only made possible with the invention of finer machine tooling. In 1893, <a href="/facts/Edward_Drummond_Libbey/4xP7cPpA">Edward Drummond Libbey</a> exhibited a <a href="/facts/Dress/gIPELSV7">dress</a> at the <a href="/facts/World%27s_Columbian_Exposition/L2EMHI1z">World's Columbian Exposition</a> incorporating glass fibers with the <a href="/facts/Diameter/6uNn4VmU">diameter</a> and texture of <a href="/facts/Silk/XhxPpvvS">silk</a> fibers. Glass fibers can also occur naturally, as <a href="/facts/Pele%27s_hair/n2PdAQgI">Pele's hair</a>. </p><p><a href="/facts/Glass_wool/AQa67mn7">Glass wool</a>, which is one product called "fiberglass" today, was invented some time between 1932 and 1933 by <a href="/facts/Games_Slayter/lEeFyDEy">Games Slayter</a> of <a href="/facts/Owens-Illinois/cRX5ebrc">Owens-Illinois</a>, as a material to be used as thermal <a href="/facts/Building_insulation/qSMbCIfY">building insulation</a>. It is marketed under the trade name Fiberglas, which has become a <a href="/facts/Genericized_trademark/c9VgT8RG">genericized trademark</a>. Glass fiber, when used as a thermal insulating material, is specially manufactured with a bonding agent to trap many small air cells, resulting in the characteristically air-filled low-density "glass wool" family of products. </p><p>Glass fiber has roughly comparable mechanical properties to other fibers such as polymers and <a href="/facts/Carbon_fibers/BTIgu1Jx">carbon fiber</a>. Although not as rigid as carbon fiber, it is much cheaper and significantly less brittle when used in composites. Glass fiber reinforced composites are used in marine industry and piping industries because of good environmental resistance, better damage tolerance for impact loading, high specific strength and stiffness. </p>