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 first TV broadcast was in 1939 in New York, and the TV was invented by an Idaho f â¦ arm boy named Philo Farnsworth, who invented many other things in his lifetime. His television, the first with no mechanical parts that could actually broadcast an image was demonstrated in 1929. + 20 others found this useful.