publication . Preprint . 2010

Simple model of photo acoustic system for greenhouse effect

Fukuhara, Akiko; Kaneko, Fumitoshi; Ogawa, Naohisa;
Open Access English
  • Published: 12 Dec 2010
Abstract
The green house effect is caused by the gases which absorb infrared ray (IR) emitted by the earth. It is worthwhile if we can adjudicate on which gas causes the greenhouse effect in our class. For this purpose, one of our authors, Kaneko has designed an educational tool for testing greenhouse effect \cite{Kaneko}. This system (hereafter abbreviated PAS) is constructed based on photo acoustic effect. Without difficulty and high cost, we can build PAS and check the IR absorption of gas. In this paper we give the simple theoretical basis for this PAS. The amplitude of sound observed in PAS depends on the modulation frequency of IR pulse. Its dependence can be expla...
Subjects
free text keywords: Physics - Popular Physics, Physics - Physics Education
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[3] Intergovernmental Panel on Climate Change. Climate Change 2007: The Physical Science Basis; Cambridge University Press: Cambridge (2007)

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[5] We have analyzed the form of PA signal with its spectrum amplitude by using Tektronix TDS1012B.

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