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Ballistics is the science of the motion of projectiles. It is divided into interior ballistics, external ballistics, and terminal ballistics. Interior ballistics is the study of the projectile in the gun; exterior ballistics, the study of the projectile through air; and terminal ballistics, the study of penetration of solids by the missile. Wound ballistics can be considered a subdivision of terminal ballistics concerned with the motions and effects of the projectile in tissue. A moving projectile, by virtue of its movement, possesses kinetic energy. For a bullet, this energy is determined by its weight and velocity:   K.E. = WV2/2 g Where g is gravitational acceleration,W is the weight of the bullet, and V is the velocity. Velocity plays a greater role in determining the amount of kinetic energy possessed by a bullet than does weight. Doubling the weight doubles the kinetic energy, but doubling the velocity quadruples the kinetic energy. The concept of a gunshot wound held by most...

The Homestead Act offered free farms in the West. Each homestead consisted of 160 acres of land and any head of a family who was at least twenty-one years of age and an American citizen could claim one. So could immigrants who intended to become citizens. All that homesteaders had to do was to move onto a piece of public land that is land owned by the government live on it for five years and the land became theirs. If a family wanted to own its homestead more quickly than this it could buy the land after only six months for a very low price of ₴ 1.25 an acre.   Transcontinental railroad companies like the Union Pacific also provided settlers with cheap land. These companies had been given land beside their tracks by the government. To increase their profits they were keen for people to begin farming this land so they advertised fur settlers. They did this not only in the eastern United States, but as far away as Europe. They shipped immigrants across the Atlantic, gave them free r...

The city of Delft came into being beside a canal, the 'Delf', which comes from the word delven, meaning delving or digging, and led to the name Delft. It presumably started around the 11th century as a landlord court . From a rural village in the early Middle Ages, Delft developed into a city, that in the 13th century (1246) received its charter. The town's association with the House of Orange started when William of Orange (Willem van Oranje), nicknamed William the Silent (Willem de Zwijger), took up residence in 1572. At the time he was the leader of growing national Dutch resistance against Spanish occupation, known as the Eighty Years' War. By then Delft was one of the leading cities of Holland and it was equipped with the necessary city walls to serve as a headquarters. An attack by Spanish forces in October of that year was repelled. After the [1] Act of Abjuration was proclaimed in 1581, Delft became the de facto capital of the newly independent Netherlands, as t...