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LVSE DASHIJIU
2012年
11期
263-265
,共3页
热导率%稳态法%环境影响
熱導率%穩態法%環境影響
열도솔%은태법%배경영향
thermal conductivity%steady-- state method%environmental influence
指出了当前大学物理实验课中学生利用稳态法测量不良导体的热导率时对实验环境的选择不够重视。在不同实验环境下进行了此实验,比较实验测量结果,发现实验环境选择不恰当对实验结果影响很大,并指出测量不良导体热导率应在室温较高的密闭室,同时将杜瓦瓶部分放置在温度较低的环境里进行测量精确较高。
指齣瞭噹前大學物理實驗課中學生利用穩態法測量不良導體的熱導率時對實驗環境的選擇不夠重視。在不同實驗環境下進行瞭此實驗,比較實驗測量結果,髮現實驗環境選擇不恰噹對實驗結果影響很大,併指齣測量不良導體熱導率應在室溫較高的密閉室,同時將杜瓦瓶部分放置在溫度較低的環境裏進行測量精確較高。
지출료당전대학물리실험과중학생이용은태법측량불량도체적열도솔시대실험배경적선택불구중시。재불동실험배경하진행료차실험,비교실험측량결과,발현실험배경선택불흡당대실험결과영향흔대,병지출측량불량도체열도솔응재실온교고적밀폐실,동시장두와병부분방치재온도교저적배경리진행측량정학교고。
In the college physics experiment Class, the undergraduates don't attach enough importance to the choice of experimental environment when using steady--state method to measure thermal conductivity of poor conductor. This article finds that the improper choices of experimental environment have a great effecton experimental result. And it points out that the measurement of thermal conductivity of poor conductor should take place in the closed room with higher temperature, and meanwhile, the Dewar flask should be put in the lower tempera- ture, so taht the measurement results are more accurate by comparing with measurement results in the different envi- ronment.