Graphite calorimeters are the primary standards for absorbed dose at NPL. Radiotherapy is one of the two most effective treatments for cancer. The success of radiotherapy in curing cancer depends critically on accurate targeting and delivery of the correct radiation dose.
The Dead Sea, The Mediterranean Sea, and the Red Sea border Israel.
The Dead Sea, known as the Sea of Salt, separates Israel and Jordan. It is so-called, because its high salt content, prevents fish and plants from living in it. Salt rusts metal and this image shoes an old buoy used by the Israeili navy, lying about 20 metres out of the water, marking where the shore was about 30 years ago