Weather map map using his own system of symbols, thereby creating the world's first weather map. He used his map to prove that air circulated clockwise around areas of high pressure; he coined the term 'anticyclone' to describe the phenomenon. He was also instrumental in publishing the first weather map in a newspaper, for which he modified the pantograph (an instrument for copying drawings) to inscribe the map onto printing blocks. "The Times" began printing weather maps using these methods with data from the Meteorological Office. The introduction of country-wide weather maps required the existence of national telegraph networks so that data
Word search but "bends" at 90 degrees at any given letter. These are much more difficult than conventional puzzles. The difficulty level is further heightened when the next letter can be at 45 degrees, and using the same letter more than once is permitted, too. Word search puzzles are often used in a teaching or classroom environment, especially in language and foreign language classrooms. Some teachers, particularly those specializing in English as a Second Language (ESL), use word search puzzles as an instructional tool. Other teachers use them as a recreational activity for students, instead. On a more advanced level, word searches