What is an Arc ? | Arc in Circuit Breaker Before going through details of arc quenching or arc extinction technologies employed in circuit breaker we should know first what is arc actually. What is an Arc ?
Meet the World's Tallest and Shortest Dogs! Gibson and Boo Boo. These are the extremes: the world's tallest dog Gibson (7 ft / 2.1 m tall when standing on his hind legs) has met Boo Boo (4 in / 10 cm high) the world's smallest dog in Sacramento, California for Guinness World Records Day 2007.
Watch L.A. dog Jiff, the Guinness-record fastest dog on two paws. Jiff the Pomeranian has joined the Guinness World Records book for his speed on two paws. The Los Angeles dog can cover 10 meters (32.8 feet) on his hind legs in 6.56 seconds. Walking on his front paws, he can zip over 5 meters (16.4 feet) in 7.76 seconds. The folks at Guinness shared the video above to celebrate Jiff and its new book, set for release Sept. 10. This is a frequently wacky undertaking.