A quartz fiber dosimeter, sometimes called a self indicating pocket dosimeter (SIPD) or self reading pocket dosimeter (SRPD) or quartz fibre electrometer (QFE), is a type of radiation dosimeter, a pen-like device that measures the cumulative dose of ionizing radiation received by the device, usually over one work period. It is clipped to a person's clothing, normally a breast pocket for whole body exposure, to measure the user's exposure to radiation.
Display of quartz fiber dosimeter, in units of roentgen. Viewing is by holding the instrument towards an external light source and looking through the magnifying eyepiece.
Charles Christian Lauritsen was a Danish-American physicist.
Charles Lauritsen