A python can detect thermal radiation with intensity greater than (0.60 mathrm{~W} / mathrm{m}^{2}). A typical human

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A python can detect thermal radiation with intensity greater than \(0.60 \mathrm{~W} / \mathrm{m}^{2}\). A typical human body has a surface area of \(1.8 \mathrm{~m}^{2}\), a surface temperature of \(30^{\circ} \mathrm{C}\), and an emissivity \(e=0.97\) at infrared wavelengths. What is the maximum distance from which a python can detect your presence? You can model the human body as a point source of radiation.

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College Physics A Strategic Approach

ISBN: 9780321907240

3rd Edition

Authors: Randall D. Knight, Brian Jones, Stuart Field

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