因受迫振动而导致的共振现象具有相当的重要性和普遍性。在声学、光学、电学、原子核物理及各种工程技术领域中，都会遇到各种各样的共振现象。共振现象既有破坏作用，也有许多实用价值。许多仪器和装置的原理也基于各种各样的共振现象，如超声发生器、无线电接收机、交流电的频率计等。在微观科学研究中共振现象也是一种重要的研究手段，例如利用核磁共振和顺磁共振研究物质结构等。
表征受迫振动的性质是受迫振动的振幅频率特性和相位频率特性（简称幅频和相频特性）。本实验中，用玻尔共振仪定量测定机械受迫振动的幅频特性和相频特性，并利用频闪方法来测定动态物理量——相位差。
參考答案:Being forced vibration resonance phenomenon is the result of considerable importance and universality. In contrast, optical, electrical, and the field of nuclear physics and engineering technology, it will run into all sorts of resonance phenomena. Resonance both damaging effects, there are many practical value. Many instruments and devices are based on the tenets of all sorts of resonance phenomena such as ultrasonic generator, radio receivers, AC Frequency other. At a micro-sciences research is also an important means of resonance phenomena. For example, using electron paramagnetic resonance NMR study material structure. Characterization of the nature of the forced vibration amplitude of the forced vibration frequency and phase frequency characteristics (amplitude and phase frequency characteristics). The experiments, the quantitative determination of mechanical resonance with the Bohr forced vibration amplitude frequency and phase frequency characteristics, and the use of stroboscopic method to measure physical quantities -- dynamic phase.
