Who was Lonnie g johnson

African-American engineer and inventor Lonnie G. Johnson was born in Alabama in 1949. He earned his master's degree in nuclear engineering from Tuskegee University, and went on to work for the U. S. Air Force and the NASA space program. After tinkering with the invention of a high-powered water gun, Johnson's Super Soaker became a top-selling item by the early 1990s. He has since been developing the Johnson Thermoelectric Energy Converter (JTEC), an engine that converts heat directly into electricity, which Johnson's sees as the path to low-cost solar power.