enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Simple machine - Wikipedia

    en.wikipedia.org/wiki/Simple_machine

    A simple machine is a mechanical device that changes the direction or magnitude of a force. [1] In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. [2] Usually the term refers to the six classical simple machines that were defined by Renaissance scientists: [3] [4 ...

  3. Machine - Wikipedia

    en.wikipedia.org/wiki/Machine

    The hand axe is the first example of a wedge, the oldest of the six classic simple machines, from which most machines are based. The second oldest simple machine was the inclined plane (ramp), [6] which has been used since prehistoric times to move heavy objects. [7] [8] The other four simple machines were invented in the ancient Near East. [9]

  4. Ancient technology - Wikipedia

    en.wikipedia.org/wiki/Ancient_technology

    The screw, the last of the simple machines to be invented, [12] first appeared in Mesopotamia during the Neo-Assyrian period (911-609) BC. [11] According to the assyriologist Stephanie Dalley , the earliest pump was the screw pump , first used by Sennacherib , King of Assyria , for the water systems at the Hanging Gardens of Babylon and Nineveh ...

  5. History of mechanical engineering - Wikipedia

    en.wikipedia.org/wiki/History_of_mechanical...

    The screw, the last of the simple machines to be invented, [9] first appeared in Mesopotamia during the Neo-Assyrian period (911-609) BC. [10] The Egyptian pyramids were built using three of the six simple machines, the inclined plane, the wedge, and the lever, to create structures like the Great Pyramid of Giza. [11]

  6. Ancient Egyptian technology - Wikipedia

    en.wikipedia.org/wiki/Ancient_Egyptian_technology

    The Egyptians invented and used many simple machines, such as the ramp and the lever, to aid construction processes. They used rope trusses to stiffen the beam of ships. Egyptian paper, made from papyrus, and pottery were mass-produced and exported throughout the Mediterranean Basin.

  7. Wheel and axle - Wikipedia

    en.wikipedia.org/wiki/Wheel_and_axle

    The simple machine called a wheel and axle refers to the assembly formed by two disks, or cylinders, of different diameters mounted so they rotate together around the same axis. The thin rod which needs to be turned is called the axle and the wider object fixed to the axle, on which we apply force is called the wheel.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_historic...

    1774: John Wilkinson invents his boring machine, considered by some to be the first machine tool. 1775: Jesse Ramsden invents the modern screw-cutting lathe. 1776: John Wilkinson invents a mechanical air compressor that would become the prototype for all later mechanical compressors. 1778: Robert Barron invents the first lever tumbler lock.