Boucle yarn is a specialized type of yarn that is usually made of three plies. Among the three plies used to create this yarn, one thread is usually looser than the others. The looser thread causes the yarn to have a rough feeling and a bulky look. This also makes it more likely to unravel than some other types of yarn.
Cold Metal Transfer - CMT - A Revolution in Mechanized Root Pass Pipeline Welding. CMT is the abbreviation for Cold Metal Transfer. The CMT process was originally intended for use as a method for joining thin gauged materials in the automotive industry. In 2006 CRC-Evans initiated an investigation to understand if this technology was suitable for root pass deposition on pipeline girth welds.
Second Law The second law states that heat energy cannot be transferred from a body at a lower temperature to a body at a higher one without the addition of energy. Thus, warm air outside can transfer its energy to a cold room, but transferring energy from a cold room to the warm air outside requires extra energy (as with an air conditioner).