Key word signing Key word signing Key word signing is a technique of simultaneous communication whereby the communication partner of the user will use both natural speech and also produce signs for the words that carry the most important information. Key word signing puts emphasis on the pertinent words in a sentence or a phrase, rather than signing every word like you would for American Sign Language (ASL). For example, if someone said, "Go wash your hands" the key words that would be signed would be "wash" and "hand". Key word signing is a form of augmentative and alternative communication (AAC) that uses
Two New Sciences is a hemp rope which is constructed from small fibres which bind together in the same way as a rope round a windlass to produce something much stronger. Then the vacuum that prevents two highly polished plates from separating even though they slide easily gives rise to an experiment to test whether water can be expanded or whether a vacuum is caused. In fact, Sagredo had observed that a suction pump could not lift more than 18 cubits of water and Salviati observes that the weight of this is the amount of resistance to a void. The discussion turns to