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.
    With Marconi having invented Radio, John Logie Baird pioneered visual communication... it was the next step up. John Logie Baird (August 13, 1888 - June 14, 1946) was a Scottish engineer and inventor of the world's first working television system in Hastings, England in 1923.elevision was not invented in Australia,1956 Television was first introduced in Australia.   ______   The first television broadcast in Australia was by TCN-9 in Sydney â¦ on the 16th of September, 1956, with announcer, Bruce Gyngell, introducing TV to the audience.