Around 700 AD, the Arabs ruled over about 60 million people. At the head of the empires there was a caliph. Right below were the governors of the provinces, who primarily collected taxes. Author: ZDF/Terra X/Gruppe 5/ Susanne Utzt, Sahar Eslah, Martin Carazo Mendez/ Martin Christ, Marc Riemer, Joac
In the Middle Ages, Europe benefited from flourishing science in the Arab world. Writings and knowledge reached Europe via Spain and Sicily. At the beginning of the 13th century, the most important ancient fundamental books were handed down. Authors: ZDF/Terra X/Group 5/Susanne Utzt, Sahar Eslah, M
This tutorial contains a few translation guidelines useful for volunteers in TED's Open Translation Project. To access the extended translation guide mentioned in the video, go to http://translations.ted.org/wiki/How_to_Tackle_a_Translation This video was created for the volunteers working in the
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Transistors how do transistors work. In this video we learn how transistors work, the different types of transistors, electronic circuit basics, how to build a transistor circuit, transistor amplifier, current gain beta, npn, pnp, heat sink, electronics and electrical engineering. Plus more! LEARN
