Laser technology reveals some imperfections of Notre Dame

Laser technology reveals some imperfections of Notre Dame


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Notre Dame is one of the most iconic buildings in the world. Built between 1160 and 1345, the massive cathedral is one of the most recognized landscapes in Paris and is one of the finest examples of French Gothic architecture. Despite the powerful past of the cathedral, very little information about the architects and designers who built the building has survived. Historian and laser designer Andrew Tallon has developed a new Notre Dame data method to shed light on the cathedral's older history.

Actual laser restraint is achieved by mounting the laser on a tripod and shooting into the gallery, taking the time to find the distance between the scanner and each point marked by the laser. Each of these points represents a distanceBy ordering the millions of points from a single location, historians can measure how the building expands and contracts throughout the day, as well as how it changes over longer periods of time.

Combining the accumulation of points generated by the laser scanner with real photographs taken simultaneously, Tallon has created extremely accurate models of the underlying structure and design of the cathedral., in addition to identifying the points where the builders / masons of the cathedral deviated from the original plan or allowed to rest to allow the ground to settle.

Tallon's research has found that the ‘Gallery of the Kings’, has moved almost a foot out of its vertical. Other works by Tallon show that the internal columns of Notre Dame are not aligned perfectly.

This laser has gained popularity in recent years, thanks to the ability to show where large buried structures or archaeological remains are still in existence. Thermal maps with different gradations can also show traces of human activity in the areaeven when the movement of sand or jungle terrain has obscured the most visible signs.


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