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<p>of 1924, which was not successful at first. Thus, Widerøe instead built a linear accelerator prototype based on Isings proposal and made this the topic of his <a href="page.php?w=dissertation">dissertation</a> under <a href="page.php?w=Walter_Rogowski">Walter Rogowski</a>. In 1928, he relocated to <a href="page.php?w=Berlin">Berlin</a> and started building <a href="page.php?w=protective_relay">protective relay</a>s during his work at <a href="page.php?w=AEG_%28German_company%29">AEG</a>. In 1933 Hitler came to power in Germany and Widerøe decided</p><p>
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