An evaporating aluminum ball with a diameter of 2 mm sprays an aluminum film with a thickness of 1 microns on a cold flat surface facing the ball for 1 min. The density of aluminum is 2.6 g/cm³, the sprayed surface is located at a distance of 1 cm from the ball. Use the drawing that shows the temperature dependence of the saturated vapor pressure of aluminum to estimate the temperature of the aluminum ball.
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5.11 Thermal radiation