The book is intended as a general background, after which the student can read texts that deal with semiconductors, dielectrics or magnetic materials in more detail.
The book also contains elements for understanding the quantum Hall effect and the Josephson effect, two effects important in precise measurements, measuring standards, and the development of computers.
The book serves as an accessible introduction to mathematics, with the aim of developing understanding, interest, and confidence in working with numbers and mathematical concepts.
Ten years before he discovered the theory of general relativity, Einstein realized that time and space were not two separate entities, but two aspects of one and the same entity.
This booklet should not be understood as a serious introduction to number theory, but rather as a reading intended for students in upper elementary school and lower secondary school, i.e., ages 13 to 17.