Which puts out the greater percentage of its energy as light: an incandescent lamp or a mercury-vapor

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Which puts out the greater percentage of its energy as light: an incandescent lamp or a mercury-vapor lamp?
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Introduction To Statistical Investigations

ISBN: 9781118172148

1st Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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