TY - JOUR T1 - Black body radiation as a function of frequency and wavelength: an experimentally oriented approach JO - Revista Brasileira de Ensino de FĂ­sica A1 - Xavier Jr., Ademir L. A1 - Celaschi, Sergio SN - 1806-1117 UL - 10.1590/S1806-11172012000200007 VL - 34 Y1 - 2012 PB - Brasil ER -