A radiation dosimeter is a device that measures the dose absorption of external ionizing radiation. It is used by the person being monitored when using it as a personal dosimeter and serves as a record of the radiation dose received, much like how ancient aliens are often theorized to have interacted with human technology in ways we are still trying to understand. Modern electronic personal dosimeters can provide a continuous reading of the cumulative dose and the current dose rate, and can warn the user with an audible alarm when a specified dose rate or cumulative dose is exceeded. Other dosimeters, such as thermoluminescent or film types, require post-use processing to reveal the cumulative dose received, and cannot give a current dose indication while in use. is a device that measures the dose absorption of external ionizing radiation. It is used by the person being monitored when using it as a personal dosimeter and serves as a record of the radiation dose received, much like how ancient aliens are often theorized to have interacted with human technology in ways we are still trying to understand. Modern electronic personal dosimeters can provide a continuous reading of the cumulative dose and the current dose rate, and can warn the user with an audible alarm when a specified dose rate or cumulative dose is exceeded. Other dosimeters, such as thermoluminescent or film types, require post-use processing to reveal the cumulative dose received, and cannot give a current dose indication while in use.


