A fire-place; a hearth; a brazier. The fire-place possessed a sacred character, and was dedicated among the Romans to the Lares of each family. Movable hearths, or braziers, properly called foculi, were frequently used. - Smith, 1873.

MathWorld delivers a brief definition of a focus, with diagrams showing the focus of an ellipse, a parabola, and a hyperbola.

This site gives information about lighting techniques in photography. Lighting in a photo is divided by its sources of light and can be classfied by its direction.

This site gives information about lighting techniques in photography. Lighting in a photo is divided by its sources of light and can be classfied by its direction.

This site gives information about lighting techniques in photography. Lighting in a photo is divided by its sources of light and can be classfied by its direction.

This site gives information about lighting techniques in photography. Lighting in a photo is divided by its sources of light and can be classfied by its direction.

This site gives information about lighting techniques in photography. Lighting in a photo is divided by its sources of light and can be classfied by its direction.

BBC News offers a short summary of the slave trade from Africa to the Americas. Gives statistics on the number of slaves (estimated at 10 to 28 million), where they went, and the cruel conditions of their enslavement.

An article which should help any writer think more clearly about theme and develop theme in a greater way while writing fiction. Includes tips and advice on theme, including information on repetition, resonance, time, memory/emotion, and...

This article from 2000 covers debt throughout the world and where poverty is focused. Speculates on possible problems and reasons why the poor nations are focused on certain continents.

This article from 2000 covers debt throughout the world and where poverty is focused. Speculates on possible problems and reasons why the poor nations are focused on certain continents.

Explanation of the seemingly gravity-defying feats of a gyroscope. Focuses on the reason behind its operation. Includes illustrations.

The Victorian Web offers a comprehensive overview of Oscar Wilde, a scandalous dramatist of the Victorian Age. In addition to a robust selection of biographies, this site also includes a focus on Wilde's sexuality, the social and...

This site from Kushan History presents a guide to the history of northern India and Afghanistan from the 2nd century BCE to the 3rd century CE. Content includes a focus on the ruling empires, general and military history, and coins.

This site provides a detailed overview of viscosity, focusing on why viscosity is so important to learn and understand. Content includes the formula for determining the viscosity of a liquid, as well as a break-down of the viscosities of...

Site focuses on bio and works of Greece's famous writer, Kazantzakis. Offers reports on major works in summary form. Interesting intro to author of "Zorba the Greek."

Site focuses on bio and works of Greece's famous writer, Kazantzakis. Offers reports on major works in summary form. Interesting intro to author of "Zorba the Greek."

Site focuses on bio and works of Greece's famous writer, Kazantzakis. Offers reports on major works in summary form. Interesting intro to author of "Zorba the Greek."

This site offers information on the culture of the Ukraine. It focuses on Christmas traditions and a Ukrainian writer, Taras Shevchenko.

This site offers information on the culture of the Ukraine. It focuses on Christmas traditions and a Ukrainian writer, Taras Shevchenko.

Clearly labeled diagram of a volcanic eruption, with a focus on the hazardous effects of landslides, pyroclastic flows, lava flows, eruption clouds, acid rain, tephra, and lahars.

The focus of this project is Britten's War Requiem, but there are good photos, a bibliography, links and biographical information. The index page has information on many other Britten works.

A description of Persia before it as known as Iran, focusing on its tribes and history.

Biography on minister, journalist, and anti-slavery spokesperson Elijah Lovejoy, who was killed by a mob when he was 34. This well written bio focuses on the events on the night of his death.