div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: Radio-News-1932-05-R - earlytelevisionorg diagram shows a graphical location by three items: the diameter the type of lens plano-convex mental determination of the focal src=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: Radio-News-1932-05-R - earlytelevisionorg diagram shows a graphical location by three items: the diameter the type of lens plano-convex mental determination of the focal src=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 3button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5page3jpg target=_blank amp-img class=trans-thumb alt=Page 3: Radio-News-1932-05-R - earlytelevisionorg diagram shows a graphical location by three items: the diameter the type of lens plano-convex mental determination of the focal src=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 4button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220225155aff21967f8b9a8b4d8febeahtml5page4jpg target=_blank amp-img class=trans-thumb alt=Page 4: Radio-News-1932-05-R - earlytelevisionorg diagram shows a graphical location by three items: the diameter the type of lens plano-convex mental determination of the focal...