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.
Rating Newest Oldest. Best Answer: The Scotsman John Logie Baird invented television in the 1920s, by bringing together the work of some others, notably Paul Nipkow, who invented a spinning disk used to scan the image. The first public demonstration of television was by John Logie Baird in Hastings, England in 1923.