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An excerpt from a Program for Blackbody Radiation Calculations II, Planck's Law Programs for the Texas Instruments model SR-52 programmable calculator, Electro Optical Industries

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INTRODUCTION
     This booklet includes 2 programs for the Texas Instruments Model SR-52 programmable calculator. These programs transfer the calculation capability of the Electro Optical Industries Inc. blackbody radiation sliderule to the Model SR-52 but with 5 significant figure accuracy.
     A copy of the manual for the blackbody sliderule is included since it defines all terms and equations and provides useful examples of the use of the equations.
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PROGRAM TITLE: BLACKBODY RADIATION SLIDERULE
     PROGRAM DESCRIPTION, EQUATIONS, VARIABLES: {pg 4}
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TITLE: BLACKBODY RADIATION SLIDERULE I (Energy) {pgs 5-7}
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TITLE: BLACKBODY RADIATION SLIDERULE II (Photons) {pgs 8-10}
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SlideRule

ps:additional references are applicable from the HP-65 version posted on 01-09-2019 in HP Software Libraries as (HP-65) A Program For Blackbody Radiation Calculations