This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible....

Эта книга — репринт оригинального издания (издательство "Florida Southern College", 1938 год), созданный на основе электронной копии высокого разрешения, которую очистили и обработали вручную, сохранив структуру и орфографию оригинального издания....

Laser is the acronym of the words “Light Amplification by Stimulated Emission of Radiation”. It was genius of Einstein, who proposed the theory of the spontaneous and stimulated emission of radiation, which was published in 1916. Today lasers technology has and is influencing our life in many ways....