Find an Orthopedic Specialist Near You. However, behind knee pain may be a symptom of deep vein thrombosis (blood clot in the leg), which is a serious and life-threatening condition. The blood clot can break loose and cause a pulmonary embolism in the lung, a heart attack, or even stroke. Deep vein thrombosis has similar symptoms to a Bakerâs cyst.
Baird was a Scottish engineer and inventor of the world's first working television system in Hastings, England, in 1923. His public demonstration subsequently took place in Selfridges, a department store in London England, during March 1925.
The televison set was invented by not one person but a group of numerous personnel. The principal idea was based on photoconductivity of the element selenium, founded by Willoughby Smith in 1873.n 26 January 1926, John Logie Baird demonstrated the first public television, which transmitted live moving images. Several months later, 3 July 1928, Baird demonstrated the first colour television. In 1923, Charles Francis Jenkin demonstrated his own version of a primitive television set.