Harris Tweed standard definition became essential. Groups of merchants in both Lewis and Harris applied to the Board of Trade for a registered trade mark. When this trade mark, the Orb, was eventually granted, the Board insisted that it should be granted to all the islands of the Outer Hebrides i.e. to Lewis, North and South Uist, Benbecula and Barra, as well as to Harris, the rationale for this decision being that the tweed was made in exactly the same way in all those islands. In 1909, after much negotiation and a degree of acrimony from merchants in Harris who felt that
Ceramic-impregnated fabric involve high temperatures. Ceramic-impregnated fabric Ceramic-impregnated fabric is a fabric that has been impregnated with ceramic. Nanometric bioceramic can be incorporated into the polymer from which the fabric is manufactured. Bioceramic nanoparticles are added to the fused polymer. Some types of ceramics show thermally-induced photoluminescence, emitting light in the far infrared (FIR) region of the electromagnetic spectrum. When in contact with the body heat, the thermoluminescence of the fabrics with embedded bioceramic is enhanced. Bioceramics presents high reflection coefficient for the infrared radiation. One way in which fabrics can be impregnated with ceramic is the process of electrophoretic deposition or