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声是由振动产生的.声音是人耳能感知的声,它是人类获取信息的重要方式之一.我们听到的声音各种各样,千差万别,能反映各种各样声音差别的物理量有音调、响度和音色.本文重点阐述音调这一物理量.物理学中把声音的高低叫音调.平常我们所说的声音的尖细、高音与低音指的就是音调.决定音调高低的因素我们可以通过一个小实验来研究决定音调高低的因素有哪些.将一把长度为30 Cm的钢锯条紧压在桌面的边沿,一端伸出桌边约3/4长度,拨动钢锯条,听它振动发出的声音,同时观察钢锯条振动的快慢;改变钢锯条伸出桌边的长度,如改为伸出桌边约1/2长度,再次
Sound is generated by vibration, which is one of the most important ways for people to acquire information. Tone, Loudness, and Tone. This article focuses on the physical quantity of pitch, the level of sound in physics is called pitch. The usual we are talking about the tines, treble and bass are the tones. The factors that determine the pitch can be determined by A small experiment to study the factors that determine the pitch.When a length of 30 Cm of hacksaw blade pressed against the edge of the desktop, one end of the table extends about 3/4 length, turn the hacksaw blade, listen to it issued vibration Of the sound, while observing the speed of the hacksaw vibration; change the length of the hacksaw stick out of the table, such as the switch to the table to extend about 1/2 length, again