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The painting directly across from the "Mona Lisa" is Caliari's "The Wedding Feast at Cana." This painting is an enormous 32 feet (9.9 meters) wide. "Virgin of the Rocks" hangs in the Grand Gallery, not the Salle des Etats.The officers rush to apprehend the truck, believing that Langdon is on the roof. That seems like a good plan, and it works. She imbeds the receiver in a bar of soap, breaks a restroom window and throws the soap onto the roof of a passing truck. Sophie tells Langdon that if he throws the dot away, the DCPJ officers will see that it is no longer moving and know he's onto them. The troublesome GPS dot keeps causing problems as the story moves along. Check out How GPS Receivers Work to learn more. Even military GPS technology can't typically get a fix on a soldier who is in dense tree cover or otherwise concealed. The receiver has to have an unbroken line of sight to these satellites, something it doesn't have indoors. One fact explains all of these points - by definition, a GPS receiver uses radio waves to communicate with satellites that are 11,000 miles above the Earth's surface. Don't work well indoors, under dense tree cover or in urban areas with tall buildings.Ī GPS receiver uses the position of three or more satellites to determine a person's location - not one, as implied in the novel.Are accurate to somewhere between 13 and 328 feet (4 and 100 meters).
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The unit described in the book would also have to fit a power source and a second radio transmitter into its tiny shell in order to communicate with police computers.