Different organ systems and their functions Video
The 11 Major Organ Systems \u0026 Their Functions different organ systems and their functions
A machine is a man-made device that uses power to apply forces and control movement to perform an action. Machines can be driven by animals and peopleby sysems forces such as wind and waterand by chemicalthermalor electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement.
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They can also include computers and sensors that monitor performance and plan movement, often called mechanical systems. Renaissance natural philosophers identified six simple machines which were the elementary devices that put a load into motion, and calculated the ratio of output force to input force, known today as mechanical advantage.
Modern machines are complex systems that consist of structural elements, mechanisms and control components and include interfaces for convenient use. Examples include: a wide range of vehiclessuch as automobilesboats and airplanes ; appliances in the home and office, including computers, building funtions handling and water handling systems ; as well https://digitales.com.au/blog/wp-content/custom/negative-impacts-of-socialization-the-positive-effects/brughel-icarus.php farm machinerymachine tools and factory automation systems and robots.
A wider meaning of "fabric, structure" is found in classical Latin, but not in Greek usage. This meaning is found in late medieval French, and is adopted from the French into English in the midth century. In the 17th century, the word machine could also mean a scheme or plot, a meaning now expressed by the derived machination. The modern meaning develops out of specialized application of the term to stage engines used in theater and to military siege enginesboth in the late 16th and early 17th centuries. The word engine used as a near- philosophical pessimism both by Harris and in later language derives ultimately via Old French from Latin ingenium "ingenuity, an invention".
Quiz Yourself on 10 Major Organ Systems
The hand axemade by chipping flint to form a wedgein the hands of a human transforms force and movement of the tool into a transverse splitting forces and movement of the workpiece. The hand axe is the first example of a wedgethe oldest of the six classic simple machinesfrom which most machines are based.
The systema oldest simple machine was the inclined plane ramp[6] which has been used since prehistoric times to move heavy objects.
The other four simple machines were invented in the ancient Near East. Three of the simple machines were studied and described by Greek philosopher Archimedes around the 3rd century BC: the lever, pulley and screw.
The earliest practical water-powered machines, the water wheel and watermillfirst appeared in the Persian Empirein what are now Iraq and Iran, by the early 4th century BC. The cotton gin was invented in India by the 6th century AD, [30] and the spinning wheel was invented in the Islamic world by the early 11th century, [31] both of which were fundamental to the growth of the cotton industry. The spinning wheel was also function precursor to the spinning jennywhich was a key development during the early Industrial Revolution in the 18th century. The earliest programmable machines were developed in the Muslim world.]
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