1001 Space Earth Nature History First Civilisations Ancient Egypt Biblical Times Ancient Greece Ancient Rome Chinese, Japanese Civilisations Indian Civilisation African Civilisation The Early Americas The Rise of Islam The Middle Ages The Renaissance Civil War and Revolution The Industrial Revolution Two World Wars 20th-century Achievements Human World Science and Technology	How powerful is the most powerful laser? The world's most powerful laser has ten arms that deliver laser pulses onto a target. For a fraction of a second, the power they generate is two hundred times greater than the combined output of all the electrical generating plants in America.   Previous: Back Book: 1001 Section: History Chapter: 20th-century Achievements