A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or man made natural fibre like Viscose, Modal & Excel is measured in terms of linear mass density, the weight of a given length of fiber.
The vernam cipher, sometimes known as the 'one time pad', is a stream cipher, which providing certain requirements are met, can be theoretically unbreakable.
Vovinam (short for VÃµ Viá»t Nam; Vietnamese: Viá»t VÃµ Äáº¡o, Martial Arts of Vietnam) is a Vietnamese martial art. Vovinam is practiced with and without weapons. It is based on the principle of between hard and soft. It includes training of the body as well as the mind. It uses force and reaction of the opponent.