Onno Sinke, Loyaliteit in verdrukking. De Technische Hogeschool Delft tijdens de bezetting
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Cites background from "Onno Sinke, Loyaliteit in verdrukki..."
...As Professor Van der Maas was a very religious, Calvinistic Protestant, he was a firm believer that idle hands are the devil’s playground: he used his time in hiding to write the lecture notes for the aeronautical curriculum and taught students who had not signed the Loyalty Statement to the Third Reich [17] to allow them to make a quick start once the war was over....
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...As Professor Van der Maas was a very religious, Calvinistic Protestant, he was a firm believer that idle hands are the devil’s playground: he used his time in hiding to write the lecture notes for the aeronautical curriculum and taught students who had not signed the Loyalty Statement to the Third Reich [17] to allow them to make a quick start once the war was over....
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...Over the years many more aircraft and aircraft parts were added and by the time the laboratory moved to its dedicated hangar building now attached to the current Aerospace building in 1965, the hangar contained more aircraft and aircraft parts as study objects than it contained test equipment [16][17]....
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References
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