Oil paper - PowerPoint PPT Presentation

The Umbrella

The Umbrella. By Kelly. Map of China. *The History*. Used umbrella to signify wealth and rank by color. Made of oil paper, and wood or whale bone. Used to protect from weather. Word “umbrella” comes from Latin word “umbra” meaning shade. Ancient umbrellas. *The Way it Works*.

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247 views • 8 slides

Electrical Performance of Dielectrics in High Voltage Transformers

Electrical Performance of Dielectrics in High Voltage Transformers. George Chen. Energy Away Day, 22 May 2012. Importance of Dielectric Research. Transformers are an essential and expensive part of high voltage transmission systems.

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262 views • 5 slides

Introduction

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84 views • 1 slides

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