| 空气中尘土的浓度测量及其应用 |
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| 引用本文： | 高永全,曹美珍.空气中尘土的浓度测量及其应用[J].应用光学,2002,23(6):42-44. |
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| 作者姓名： | 高永全 曹美珍 |
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| 作者单位： | 华北工学院,物理教研室,山西,太原,030051 |
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| 基金项目： | 山西省自然科学基金资助项目 (2 0 0 0 10 36 ) |
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| 摘 要： | 当一定频率的光照到特定的金属表面时，金属会产生光电子并产生光电流，其光电流的大小与光强成正比，而光强与发射光的光强和光在传播过程中的煤质有关。当射光强一定时，其光电流大小与媒质有关。当光线穿过一定浓度尘土的空气时，其光电流大小与媒质浓度成反比，根据这一原理，我们可以通过测量光电流的大小来测量尘土的浓度。
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| 关 键 词： | 空气 测量 光电效应 媒质 光强 尘土 光电流 光电子 浓度 |
| 文章编号： | 1002-2082(2002)06-0042-03 |
| 收稿时间： | 2001/11/9 |
MEASUREMENT OF DUST DENSITY IN THE AIR AND ITS APPLICATION |
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| GAO Yong quan,CAO Mei zhen.MEASUREMENT OF DUST DENSITY IN THE AIR AND ITS APPLICATION[J].Journal of Applied Optics,2002,23(6):42-44. |
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| Authors: | GAO Yong quan CAO Mei zhen |
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| Abstract: | When light specified illuminates on the surface of a piece of specific metal, the photoelectron and photoelectric current will be produced. The intensity of the photocurrent is proportional to the intensity of light. The light intensity is related to the intensity of emitted light and the dust medium in the air.When the light intensity of emitted light is certain, the intensity of the photoelectric current is related to the medium. While light trasmits a certain density of the dust in the air, the photocurrent intensity is inversely proportional to the medium density. According to this principle, we can measure the dust density by means of measuring the photoelectric current. |
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| Keywords: | photoelectric effect medium light intensity dust density photoelectron |
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