Projectile Motion: In Aristotle's view, objects moved parallel to the Earth's surface until it was time (i.e. it was their destiny) to fall back to the earth . Aristotle believed that the "natural" state of massive objects was to seek the center of the Earth. When a stone is launched, an impetus is given to it to disturb it from its natural condition. ... Archimedes' catapults lobbed quarter-ton stones at the attacking Roman ships, quickly destroying the clumsy Roman siege engine. ...

Our Irish Ancestors Paul Francis, 2010 Page 1 Our link to Ireland comes through the Knox Family. ... Back at this time, Ireland was largely controlled by wealthy Protestant landowners, the descendants of the English and Scottish "Planters" who had invaded Ireland in the 1600s, displaced the natives and appropriated their lands, becoming fabulously wealthy in the process. ... They decided to try their luck across the Irish Sea, and in a year of terror sacked coastal monasteries all around Ireland. ...

... Up: Observatory Planning and Scheduling . ... Technological advances such as widespread use of the Internet, multi-platform visual development tools such as Java and CORBA, and overall increases in the power of desktop hardware are allowing for significant improvements in user support tools. ... In such an environment, for any type of observing to maximize scientific returns, information has to be passed back and forth between instrument developer, observatory staff and the user community. ...