Spectroscopie si LASERI. THE LASER SYSTEM
Publicat: 18 Oct 2007 | Vizualizari: 1466
The Laser System
The laser is a system that is similar to an electronic oscillator. An Oscillator is a system that produces oscillations without an external driving mechanism. To demonstrate an oscillator, we can use the familiar acoustic analog.
A sound amplification system has a microphone, amplifier and speaker. When the microphone is placed in front of the speaker, a closed circuit is formed, and a whistle is heard out of the speaker. The whistle is created spontaneously, without any external source.
Explanation: The speaker's internal noise is detected by the microphone, amplified and the amplified signal is again collected by the microphone. This positive feedback continues until a loud whistle is heard.
În acest ”Test” este vorba cât de bine poți gândi. Deoarece unii greșesc la cele mai simple întrebări.Acesta este un așa numit „Test de Logică”.
Nivel cariera: Fara experienta
Tipul postului: Full-time
Perioada de valabilitate: 2021-08-01 00:00:00 - 2021-08-11 00:00:00