1.   A revealing difference between gravitational and electromagnetic radiation is that dipole radiation is absent in the gravitational case.

2.   But because ultraviolet radiation is a constant feature of solar radiation, the ozone layer is maintained.

3.   In some parts of the world, background radiation is very high.

4.   The radiation involved is normally of frequency much greater than that of any molecular vibration.

5.   The radiation is a by-product of particle accelerators use in high-energy physics.

6.   So far as radiation is concerned, the major factor to be examined is cross-country variation in natural exposure, from radon and such-like.

7.   How can solar radiation be directly trapped and used?

8.   Only intermediate- and low-level radiation will be stored in the repository.

9.   And syncrotron sounds terribly technical, radiation is hazardous, and source comes out of the bottle and you put it on fish and chips.