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Waterbeds primarily consist of two types, hard-sided beds and soft-sided beds. Early waterbeds were hard-sided consisting of a frame resting on a deck and platform, upon which was the water-containing mattress.
Soft-sided waterbeds look very similar to conventional beds and are designed to fit on existing bedroom furniture.
First generation waterbeds had only one water chamber, hence when disturbed significant wave-action could be felt. They needed some time to stabilize after a disturbance. Later generations employed wave-reducing methods including fiber batting and interconnected water chambers. More modern waterbeds have a mixture of air and water chambers, usually interconnected. A typical heating pad consumes 150-400 watts of power and uses a thermostat. Depending on insulation, temperature, use and other things, electricity usage may vary significantly. The annual electricity cost may be USD 100-500.
Waterbeds are usually constructed from vinyl or similar material. They can be repaired with a bicycle repair kit or a dinghy repair kit.
Dr. William Hooper of Portsmouth, England, patented a waterbed in 1883. He devised it to relieve bed sore pains in his patients. Unable to contain the water and control its temperature, his invention was a market failure.
The modern waterbed was created by Charles Hall in 1968, while he was design student at San Francisco State University in California. Hall originally wanted to make an innovative chair. His first prototype was a vinyl bag with 300 pounds of cornstarch, but the result was uncomfortable. He next attempted to fill it with Jell-O, but this too was a failure. Ultimately, he abandoned working on a chair, and settled on perfecting a bed. He succeeded. His timing could not have been more perfect: the Sexual Revolution was under way, and Hall's waterbed became enormously popular, making it one of the most notable icons of the 1970s. However, because a waterbed is described in the novels Double Star 19561956 is a leap year starting on Sunday. see link for calendar) Events January January 1 End of Anglo- Egyptian Condominium in Sudan. January 16 President Gamal Abdal Nasser of Egypt vows to reconquer Palestine January 26 1956 Winter Olympic Games open in and Stranger in a Strange LandStranger in a Strange Land is a science fiction novel by Robert A. Heinlein, which was first published in 1961. It tells the story of Valentine Michael Smith, a human raised by Martians on Mars, as he returns to Earth in early adulthood; the novel explore 19611961 (As MAD Magazine pointed out on its first cover for the year) was the first "upside-down" year i. one that looked the same upside down since 1881, and the last until 6009. Events January January 1 The farthing coin, used since the 13th century, cease by Robert A. HeinleinRobert Anson Heinlein ( July 7, 1907 May 8, 1988) was one of the most influential authors in the science fiction genre. He developed new themes, new techniques and approaches. He became the first science fiction writer to break into major general magazine, Hall was unable to obtain a patent on his creation. In 19801980 is a leap year starting on Tuesday. Events January-February January 1- April 1 National steel strike in United Kingdom January 1 Changes to the Swedish Act of Succession creates Victoria of Sweden, Crown Princess over her younger brother January 5 He Heinlein recalled in Expanded UniverseExpanded Universe (or Extended Universe) is the term used for (usually) unofficial, non- canon additions to an imaginary universe. Nearly every popular series has such additions, usually in the forms of comics or novels based within the same setting as po that:
However, Heinlein made no attempt to build his invention. Hall like Edison and Bell gets full credit for creating an industry.