 Baird's mechanical system reached a peak of 240-lines of resolution on BBC television broadcasts in 1936, though the mechanical system did not scan the televised scene directly.
<fluency>  Baird's mechanical system reached a peak of 240-lines of resolution on BBC television broadcasts in 1936, though the mechanical system did not scan the televised scene directly.
 Baird's mechanical system reached a peak of 240-lines of resolution on BBC telecasts in 1936, though the mechanical system did not scan the televised scene directly.