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 television was made and demonstrated in 1925 by John Logie Baird. It was not a commercial product at that time but in 1929, the BBC began public television broadcast â¦ s for the first time using the same television system.2 people found this useful.he first television was made and demonstrated in 1925 by John Logie Baird. It was not a commercial product at that time but in 1929, the BBC began public television broadcast â¦ s for the first time using the same television system. 2 people found this useful.