Search results
Results from the WOW.Com Content Network
The Nazca lines are ancient geoglyphs in the desert of Peru, created by removing pebbles and revealing different colors. They may have been used for religious, astronomical, or ceremonial purposes, and were rediscovered by pilots in the 20th century.
AOL Mail offers secure and personalized email with features like AOL Mail, news, and weather for free. You can also access your email on the go with an iOS & Android app and get help from experts.
The 10.5 cm hrubý kanón vz. 35 (Heavy Gun model 35) was a Czech field gun used in the Second World War. Those weapons captured after the German occupation of Czechoslovakia in March 1939 were taken into Wehrmacht service as the 10.5 cm K 35(t). Former Yugoslav guns were designated as the 10.5 cm Kanone 339(j).
Learn about the mathematical concept of four-dimensional space (4D), its history, geometry, and applications in physics and mathematics. Explore the visualization methods, examples, and properties of 4D objects such as the tesseract and the Minkowski space.
The longer "month" may be set as the first (5–4–4), second (4–5–4), or third (4–4–5) unit. Its major advantage over a regular calendar is that each period is the same length and ends on the same day of the week, which is useful for planning manufacturing or work shifts.
A Category 5 Atlantic hurricane is a tropical cyclone with 1-minute sustained wind speeds of at least 254 km/h. See the records, tracks, and background of all known Category 5 hurricanes since 1851, with some possible undetected cases.
The X-15 was a hypersonic rocket-powered research aircraft that set the world record for the highest speed ever recorded by a crewed, powered aircraft, 4,520 miles per hour (7,274 km/h; 2,021 m/s), in 1967. Learn about its design, development, operational history, and pilots on Wikipedia.
1.5 cm — length of a very large mosquito; 2 cm — approximate width of an adult human finger; 2.54 cm — 1 inch; 3.1 cm — 1 attoparsec (10 −18 parsecs) 3.5 cm — width of film commonly used in motion pictures and still photography; 4.3 cm — minimum diameter of a golf ball [32] 7.3-7.5 cm — diameter of a baseball [33]