Well, the correct link was this and not the previous.. (sorry!) http://www.chem.purdue.edu/raftery/grouppubs/760371dr.pdf > = > Hi G=F6khan, > (just for fun..)this is an educational project of a LEGO Spectrophotomete= r for students: > = > http://chemeducator.org/letters/0007006/760371dcac1.htm > = > = > regards > Marco > = -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist