Complex sentence: The Graetz number ("Gz"), a dimensionless number describing heat flow, is named after him, as is the diode bridge rectifier circuit invented by Polish electrotechnician Karol Pollak and popularised by Leo Graetz in Elektronische Zeitung in 1897.
Split into simpler sentences: The Graetz number ("Gz "), a dimensionless number describing heat flow, is named after him. Also sometimes known by his name is the diode bridge rectifier circuit invented by Polish electrotechnician Karol Pollak and popularised by Leo Graetz in"Elektronische Zeitung" in 1897.