Glossary
Royal Asscher Diamond Company
History and Establishment of Royal Asscher Diamond Company The Royal Asscher Diamond Company was founded in 1854 by the Asscher family of gemcutters. Its headquarters are located in Amsterdam, the...
Romance (love)
General Definitions and Characteristics of Romantic Love Romantic love is a motivational state associated with a desire for long-term mating with a specific individual. It is characterized by distinctive cognitive,...
Rock (geology)
Introduction and Formation of Rocks Rocks are naturally occurring solid masses or aggregates of minerals or mineraloid matter. They form the Earth's outer solid layer, the crust, and most of...
Ring finger
Etymology and Naming of the Ring Finger The ring finger is called digitus medicinalis, digitus annularis, digitus quartus, or digitus IV in anatomy. In many languages, the ring finger is...
Ring (jewellery)
History of Rings Rings have symbolic functions such as representing marriage, achievement, status, and authority. Rings can be made from various materials like metal, wood, stone, or plastic. Gemstones like...
Rhombicosidodecahedron
Names and Dimensions Johannes Kepler named this polyhedron a rhombicosidodecahedron. The name rhombicosidodecahedron is short for truncated icosidodecahedral rhombus. Kepler also named a rhombic triacontahedron as icosidodecahedral rhombus. There are...
Repoussé and chasing
Etymology and Terminology Repoussé is a French word meaning 'pushed up' derived from Latin 'pulsare' which means to push. Repoussage is the noun referring to the technique. Repoussé is an...
Religious vows
Religious Vows in Christianity Monks and nuns following the Rule of Saint Benedict make the Benedictine vow, which includes obedience, stability, and conversion of manners. Mendicant orders like the Franciscans...
Relative density
Definition and Measurement of Relative Density Relative density is the ratio of the density of a substance to the density of a reference material. It is a dimensionless quantity. Specific...