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 history of the television can be dated back to the late 1800âs when inventors experimented with ways to have signals transmitted to a receiver. In fact, the first coaxial cable (commonly used to distribute cable TV signals) was invented during this time. The first actual transmission of images was successfully completed by John L. Baird in 1925, which led to rapid developments in television in subsequent years.