  In the past 50 years, calorimeters have become the most important detectors
in many particle physics experiments, especially experiments in colliding-beam
accelerators at the energy frontier. In this paper, we describe and discuss a
number of common misconceptions about these detectors, as well as the
consequences of these misconceptions. We hope that it may serve as a useful
source of information for young colleagues who want to familiarize themselves
with these tricky instruments.
