Primary headaches. A primary headache is caused by overactivity of or problems with pain-sensitive structures in your head. A primary headache isn't a symptom of an underlying disease. Chemical activity in your brain, the nerves or blood vessels surrounding your skull, or the muscles of your head and neck (or some combination of these factors) can play a role in primary headaches.
The first flat screen TV was invented in July 1964 by a team at the University of Illinois. ... That year, LCD screens were sold in sizes up to 42 inches.
Best Answer: Answer. I believe it was in 1954 that the first television was completed and released for consumer use. [improve answer]Answer. The first concept of the television was a sketch done by a 14-year-old farm boy named Philo T. Farnsworth in 1922. On September 7, 1927, he finally created a television system that could not only display, but transmit signals between seperate rooms. http://www.videouniversity.com/farnhal.h...