In the outlines below we explain what causes each colour of diesel smoke and provide you with links to high quality products that will help you solve these problems.... Black smoke is the most common smoke emitted from diesel engines.It indicates poor and incomplete combustion of the diesel fuel.t the least, that smoke may be due to a simple problem, that is causing poor combustion efficiencyand costing you in excessive fuel bills (eg carboned up engine from excessive idling, stop start operation or short run times).
Harlem Renaissance. For the eponymous basketball team, see New York Renaissance. The Harlem Renaissance was a cultural, social, and artistic explosion that took place in Harlem, New York, spanning the 1920s. During the time, it was known as the New Negro Movement, named after the 1925 anthology by Alain Locke.
Lesson Summary. The Harlem Renaissance was an African-American cultural movement that flourished throughout the 1920s and into the 1930s. Called the 'New Negro Movement' during its time, Harlem Renaissance artists, writers and musicians developed new ways to express African-American pride.entral to the Harlem Renaissance was the concept that the time had come for African-Americans to take their rightful place in society and contribute to culture in meaningful ways. Although the movement peaked throughout the late 1920s, its impact continued into the 1930s and beyond.