Equivalent dose H Sv

Biological effects caused by radiation are dependent not only upon the dose absorbed (Gy) but also, and above all, upon the kind of radiation. "Sparsely" ionizing radiations such as gamma-rays, X-rays or beta-rays are less effective in damaging then "densely" ionizing radiation such as alpha particles or fission fragments. In order to take into account this difference, a corrective weighting factor dependent on the kind of radiation and energy has been introduced. Weighting factors range from 1 (for photons or electrons) up to 20 (for alpha particles), and is dimensionless (see Figure A.1). Those specific for neutrons are given in Figure A.2. [IRCP, 1990].

Radiation and energy

Weighting factor, wr

Photons, all energy

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Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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