Nuclear physics is the field of physics that studies the building blocks and interactions of atomic nuclei. The most commonly known applications of nuclear physics are nuclear power and nuclear weapons, but the research field is also the basis for a far wider range of applications, including in the medical sector (nuclear medicine, magnetic resonanceimaging), in materials engineering (ion implantation) and in archaeology (radiocarbon dating). The field of particle physics evolved out of nuclear physics and, for this reason, has been included under the same term in earlier times.
For the past forty years Beer and Johnston have been the uncontested leaders in the teaching of undergraduate engineering mechanics. Their careful presentation of content, unmatched levels of accuracy, and attention to detail have made their texts the standard for excellence. The revision of their classic Mechanics of Materials text features a new and updated design and art program; almost every homework problem is new or revised; and extensive content revisions and text reorganisations have been made.
Life would be impossible without plants: they provide food, either directly or in the form of plant-eating animals, as well as the many fibers we use, from the timber to build homes and the fuel for heating and cooking to the wood used to make tools and furniture. It is not surprising, therefore, that people have been studying plants for thousands of years.
