The relationship between physics and modern science and technology

The first part of this paper discusses the relationship between physics and other sciences such as mathematics, astronomy, chemistry, biology and the earth sciences is discussed in the first part of this paper. Through a number of examples it is emphasized that mutual interaction is beneficial for physics as well as for other branches of science and often leads to major breakthroughs. The second part deals with the interaction of physics with modern technology. Two different modes of interaction have been found, one whereby technology precedes physics and the other whereby physics precedes technology. The latter mode is emphasized and illustrated with a number examples drawn from diverse fields such as energy resources, materials and information technologies, showing the crucial roles played by physics in the establishment and development