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<p>published a letter in which <a href="page.php?w=Alan_Archibald_Campbell-Swinton">Alan Archibald Campbell-Swinton</a>, fellow of the <a href="page.php?w=Royal_Society">Royal Society</a> (<a href="page.php?w=UK">UK</a>), discussed how a fully electronic television system could be realized by using cathode-ray tubes (or "Braun" tubes, after their inventor, <a href="page.php?w=Karl_Ferdinand_Braun">Karl Braun</a>) as both imaging and display devices. He noted that the "real difficulties lie in devising an efficient transmitter", and that it was possible</p><p>
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