A letter is a written message from one person to another. The role of letters in communication has chang...
Flares generally produce their light through the combustion of magnesium metal, sometimes colored by the i...
World peace is an ideal of freedom, peace, and happiness among and within all nations. I...
Double vision can occur when the two eyes are not correctly aligned while aiming at an object, such as i...
In physics, a laser is a device that emits light through a specific mechanism for which the term l...
American magician and illusionist best known for his combination of illusions and storyt...
Darts is a variety of related games, in which darts are thrown at a circular target (dart ...
Lincoln's leadership qualities were evident in his close supervision of the victorious w...
A tradition is a practice, custom, or story that is memorized and passed down from generation ...
A world record is the best performance in a certain discipline, usually a sports event. ...