Vernier Software and Technology
Vernier Software & Technology

Distance and Radiation


Scientists and health care workers using intense radiation sources are often told that the best protection is distance; that is, the best way to minimize exposure to radiation is to stay far away from the radiation source. Why is that?

A physically small source of radiation, emitting equally in all directions, is known as a point source. By considering the way radiation leaves the source, you will develop a model for the intensity of radiation as a function of distance from the source. Your model may help explain why users of radiation sources can use distance to reduce their exposure.


In this experiment, you will

  • Develop a model for the distance-dependence of gamma radiation emitted from a point source.
  • Use a counter to measure radiation emitted by a gamma source as a function of distance.
  • Analyze count rate data in several ways to test for consistency with the model.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Nuclear Radiation with Vernier »

Nuclear Radiation with Vernier

See other experiments from the lab book.

1α, β, and γ
2Distance and Radiation
3Lifetime Measurement
4Counting Statistics
5Background Radiation Sources
6Radiation Shielding

Experiment 2 from Nuclear Radiation with Vernier Lab Book

<em>Nuclear Radiation with Vernier</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

Buy the Book

Go to top