This is a tremendous overview of the tiny atom. Journey through the history of human understanding of this basic building block of matter. Examine each of the sub-atomic particles in detail: neutrons, protons, electrons, quarks. Peruse...

Queen Victoria ruled Great Britain until her death in 1901. Here are four slides describing the life and times of Queen Victoria in a bulleted format. The last slide sums up the information as a timeline of her life.