Discover some amazing scientists and engineers that paved the way for modern machines in this fascinating book! Featuring an array of vibrant images, stunning facts, and captivating mini-biographies, readers will learn about the accomplishments of people such as Thomas Edison, Louis-Jacques-Mande Daguerre, George Eastman, and Alexander Graham Bell, as well as some of the incredible inventions and discoveries they made—the wave theory of light to the metal detector! An accessible glossary and index are provided to aid in further understanding of such topics as the Doppler effect, acoustics, wavelength, and dioramas. Children will be encouraged to further explore how light works with an exciting hands-on lab activity!