<P> Facsimile transmission systems pioneered methods of mechanically scanning graphics in the early 19th century . The Scottish inventor Alexander Bain introduced the facsimile machine between 1843 and 1846 . The English physicist Frederick Bakewell demonstrated a working laboratory version in 1851 . The first practical facsimile system , working on telegraph lines , was developed and put into service by the Italian priest Giovanni Caselli from 1856 onward . </P>
<P> Facsimile transmission systems pioneered methods of mechanically scanning graphics in the early 19th century . The Scottish inventor Alexander Bain introduced the facsimile machine between 1843 and 1846 . The English physicist Frederick Bakewell demonstrated a working laboratory version in 1851 . The first practical facsimile system , working on telegraph lines , was developed and put into service by the Italian priest Giovanni Caselli from 1856 onward . </P>
who made the first tv in the world
who made the first tv in the world
between 1843 and 1846
between 1843 and 1846