白熾燈發(fā)光效率與燈絲溫度的關(guān)系

應(yīng)用物理學(xué)論文編號(hào):WLX038  字?jǐn)?shù):8153,頁(yè)數(shù):17

 目  錄
中文摘要
英文摘要………………………………………………………………………………………..…ⅱ
目錄………………………………………………………………………………………………..ⅲ
第一章  緒論……..………………………………………………………………………………..1
      1.1  研究背景……………………………………………………………………………...1
      1.2  研究方法與系統(tǒng)描述………………………………………………………………...2
      1.3  論文內(nèi)容概述………………………………………………………………………...3
第二章  對(duì)黑體輻射的研究…………………………...………………………………………….4
      2.1  黑體輻射研究概況…………………………………………………………………...4
      2.2  現(xiàn)階段黑體輻射研究狀況………………………………………. ………………….5
第三章  可見(jiàn)光能量百分比計(jì)算…………………………………………………………………6
      3.1  C語(yǔ)言程序設(shè)計(jì)……………………………………………………………………...6
      3.2  可見(jiàn)光能量百分比計(jì)算……………………………………………………………...7
      3.3  溫度對(duì)燈絲發(fā)光效率的影響………………………………………………………...9
第四章  黑體修正……………………………………………………………. ………………....11
第五章  結(jié)論..……………………………………………………………………………………12
致謝………………………………………………………………………………………………..13
參考文獻(xiàn)…………………………………………………………………………………………..14

摘    要
 白熾燈發(fā)光效率會(huì)隨著燈絲溫度的改變而改變。本論文研究白熾燈發(fā)光效率與燈絲溫度的關(guān)系，相當(dāng)于研究黑體輻射中可見(jiàn)光能量占總輻射能量的百分比。對(duì)普朗克公式進(jìn)行積分算出能量密度曲線(xiàn)下的整個(gè)面積，再用相同方法計(jì)算在可見(jiàn)光頻率范圍為內(nèi)的曲線(xiàn)下的面積，兩個(gè)面積的比值就是所求的結(jié)果。通過(guò)設(shè)計(jì)C語(yǔ)言程序?qū)υ诤隗w輻射中可見(jiàn)光能量在一定溫度下占總輻射能量的比值以及在不同溫度下進(jìn)行計(jì)算。根據(jù)所寫(xiě)的C語(yǔ)言程序計(jì)算不同溫度下可見(jiàn)光能量占總能量的比值，發(fā)現(xiàn)可見(jiàn)光能量占總輻射能量的百分比隨著溫度的升高而增大，當(dāng)溫度達(dá)到一定值時(shí)可見(jiàn)光能量所占的比值達(dá)到最大，然后所占比值就逐漸下降。
關(guān)鍵詞：  黑體輻射 可見(jiàn)光 比值 溫度 發(fā)光效率
Abstract
 Incandescent luminous efficiency changes along with the temperature of filament, this paper studies relationship between the incandescent filament light-emitting efficiency and its temperatures which is similar to study visible light energy account for the total radiation energy of the rate in blackbody radiation. Calculate the energy density of the whole area under the curve by integrating Planck formula, and the same method used in the frequency range from  to for the area under the curve, two areas’ ratio is the result what we want. Programming C language to calculate visible light energy take up of the total rate of radiation energy in blackbody radiation when the temperature is a constant, then change the temperature and calculate again. According to the C language procedures which we programmed to calculate the percentage of visible light energy of the total energy at different temperatures, we discover that the percentage of visible light energy occupies total energy increases when the temperature increases. When the temperature reaches a certain value, the percentage of the visible light is largest, and then gradually declines.
 
Keywords:  Blackbody radiation；Visible light；Percentage ；Temperature ；Luminous efficiency