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1 dzień temu · A cross section of the shore-end of a modern submarine communications cable. 1 – Polyethylene 2 – Mylar tape 3 – Stranded steel wires 4 – Aluminium water barrier 5 – Polycarbonate 6 – Copper or aluminium tube 7 – Petroleum jelly 8 – Optical fibers Submarine cables are laid using special cable layer ships, such as the modern René Descartes [], operated by Orange Marine.
1 dzień temu · Washing one's hands, a form of hygiene, is the most effective way to prevent the spread of infectious diseases. Hygiene is a set of practices performed to preserve health.According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refers to maintaining the body's cleanliness.
