What Is a Theodolite?
What Is a Theodolite? A theodolite is a surveying instrument used for measuring horizontal and vertical angles, and has been adapted for specialized purposes such as...
Read MoreWhat Is a Theodolite? A theodolite is a surveying instrument used for measuring horizontal and vertical angles, and has been adapted for specialized purposes such as...
Read MoreHow Do We Grip? We take a grip on things by using our muscles to exploit the development of the human thumb. The importance of this thumb is that it can be moved across...
Read MoreWho Invented the Quartz Clock? In 1927, Canadian-born Warren Marrison, a telecommunications engineer, was searching for reliable frequency standards at Bell Telephone...
Read MoreWhy Do Fish Swim in Schools or Shoals? Some fish swim alone; others stay in groups known as “schools” or “shoals”. A school of fish swims in formation, moving and...
Read MoreWhat Do the Letters Z-I-P Stand for in the Words Zip Code? The “ZIP” in “ZIP code” seems to describe the speed with which mail is delivered...
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