Geophysical investigations provide society with benefits, such as energy resources, minerals, hazard minimisation and an understanding of the complex planet we inhabit. Syllabus Geophysics involves the measurement of physical properties of the Earth. Some physical phenomena such as gravitation and radiation provide information about the Earth at a distance from it. Seismic methods provide information about the large scale structure of the Earth and the detailed structure of its crust. Studies of past and present physical phenomena indicate that the Earth is dynamic.
Geophysics provides information that is of economic and social benefit.
The use of other advances in technology, developed from our understanding of the electromagnetic spectrum, and based on sound physical principles, has allowed medical technologists more sophisticated tools to analyse and interpret bodily process for diagnostic purposes. Diagnostic imaging expands the knowledge of practitioners and their patients and the practice of medicine. It usually uses non-invasive methods for identifying and monitoring diseases or injuries via the generation of images representing internal anatomic structures and organs of the body. Technologies, such as ultrasound, computed axial tomography, positron emission tomography and magnetic resonance imaging, can often provide clear diagnostic pictures without surgery. The practitioner can look at the MRI films and determine whether there is a pinched nerve, a degenerative disc or a tumour.