The back-and-forth motion of a swing is an example of a pendulum. We see pendulums in other areas of our lives as well, such as in grandfather (also known as longcase) clocks.ther factors, including a pendulum's length, can also affect its motion. Background. A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity.
More than a century later, however, the worldâs first computer was actually built. 1890: Herman Hollerith designs a punch card system to calculate the 1880 census, accomplishing the task in just three years and saving the government $5 million.
Thursday, July 04, 2013, 06:57 am PT (09:57 am ET) Though the mouse didn't become the standard way to control a desktop computer until Apple released the Macintosh in 1984, it was first invented 20 years earlier by a visionary World War II veteran named Douglas C. Engelbart, who passed away this week at the age of 88.