A kaleidoscope is an optical instrument with two or more reflecting surfaces tilted to each other at an angle, so that one or more objects on one end of these mirrors are shown as a regular symmetrical pattern when viewed from the other end, due to repeated reflection. These reflectors are usually enclosed in a tube, often containing on one end a cell with loose, colored pieces of glass or other transparent materials to be reflected into the viewed pattern. Rotation of the cell causes motion of the materials, resulting in an ever-changing view being presented.
Lexicology is the branch of linguistics that analyzes the lexicon of a specific language. A word is the smallest meaningful unit of a language that can stand on its own, and is made up of small components called morphemes and even smaller elements known as phonemes, or distinguishing sounds. Lexicology examines every feature of a word – including formation, spelling, origin, usage, and definition.
Polis, plural poleis, means ‘city’ in ancient Greek. The modern Greek word πόλη (polē) is a direct descendant of the ancient word and roughly means "city" or an urban place. However, the Ancient Greek term that specifically meant the totality of urban buildings and spaces was asty (ἄστυ), rather than polis.
The spatha was a type of straight and long sword, measuring between 0.5 and 1 m, with a handle length of between 18 and 20 cm, in use in the territory of the Roman Empire during the 1st to 6th centuries AD. Later swords, from the 7th to 10th centuries, like the Viking swords, are recognizable derivatives and sometimes subsumed under the term spatha.
A tripod is a portable three-legged frame or stand, used as a platform for supporting the weight and maintaining the stability of some other object. The three-legged design provides good stability against gravitational loads as well as horizontal shear forces, and better leverage for resisting tipping over due to lateral forces can be achieved by spreading the legs away from the vertical centre. Variations with one, two, and four legs are termed monopod, bipod, and quadripod.
Acrobatics is the performance of human feats of balance, agility, and motor coordination. Acrobatic skills are used in performing arts, sporting events, and martial arts. Extensive use of acrobatic skills are most often performed in acro dance, circus, gymnastics, and freerunning and to a lesser extent in other athletic activities including ballet, slacklining and diving. Although acrobatics is most commonly associated with human body performance, the term is used to describe other types of performance, such as aerobatics.
A bottle is a narrow-necked container made of an impermeable material in various shapes and sizes that stores and transports liquids. Its mouth, at the bottling line, can be sealed with an internal stopper, an external bottle cap, a closure, or induction sealing.
A marionette is a puppet controlled from above using wires or strings depending on regional variations. A marionette's puppeteer is called a marionettist. Marionettes are operated with the puppeteer hidden or revealed to an audience by using a vertical or horizontal control bar in different forms of theatres or entertainment venues. They have also been used in films and on television. The attachment of the strings varies according to its character or purpose.
The gymnasium in Ancient Greece functioned as a training facility for competitors in public games. It was also a place for socializing and engaging in intellectual pursuits. The name comes from the Ancient Greek term gymnós, meaning "naked" or "nude". Only adult male citizens were allowed to use the gymnasia.
A pogo stick is a vehicle for jumping off the ground in a standing position—through the aid of a spring, or new high performance technologies—often used as a toy, exercise equipment or extreme sports instrument. It led to an extreme sport named extreme pogo or "Xpogo".
Tightrope walking, also called funambulism, is the skill of walking along a thin wire or rope. It has a long tradition in various countries and is commonly associated with the circus. Other skills similar to tightrope walking include slack rope walking and slacklining.
Jumping stilts, bounce stilts or spring stilts are special stilts that allow the user to run, jump and perform various acrobatics. Spring stilts using fiberglass leaf springs were patented in the United States in 2004 under the trademark "PowerSkip", marketed for recreational and extreme sports use. Spring stilts are often mostly made of aluminium. Using these stilts is also called "bocking" or "powerbocking", a corrupted version of the name of the stilts' inventor, Alexander Böck.
A crutch is a mobility aid that transfers weight from the legs to the upper body. It is often used by people who cannot use their legs to support their weight, for reasons ranging from short-term injuries to lifelong disabilities.
A walker (North American English) or walking frame (British English) is a device that gives support to maintain balance or stability while walking, most commonly due to age-related mobility disability, including frailty. Another common equivalent term for a walker is a Zimmer(frame), a genericised trademark from Zimmer Biomet, a major manufacturer of such devices and joint replacement parts. Walking frames have two front wheels, and there are also wheeled walkers available having three or four wheels, also known as rollators.
Halteres were a type of dumbbells used in Ancient Greece. In Ancient Greek sports, halteres were used as lifting weights, and also as weights in their version of the long jump. Halteres were held in both hands to allow an athlete to jump a greater distance; they may have been dropped after the first or second jump.
A bandeau is a garment comprising, in appearance, a strip of cloth. Today, the term frequently refers to a garment that wraps around a woman's breasts. It is usually part of a bikini in sports or swimwear. It is similar to a tube top, but narrower. It is usually strapless, sleeveless, and off the shoulder. Bandeaux are commonly made from elastic material to stop them from slipping down, or are tied or pinned at the back or front. In the first half of the 20th century, a "bandeau" was a narrow band worn by women to bind the hair, or as part of a headdress.
Clothing in ancient Greece refers to clothing starting from the Aegean bronze age to the Hellenistic period. Clothing in ancient Greece included a wide variety of styles but primarily consisted of the chiton, peplos, himation, and chlamys. Ancient Greek civilians typically wore two pieces of clothing draped about the body: an undergarment and a cloak. The people of ancient Greece had many factors that determined what they wore and when they wore it.
Stauros is a Greek word for a stake or an implement of capital punishment. The Greek New Testament uses the word stauros for the instrument of Jesus' crucifixion, and it is generally translated as "cross" in religious texts, while also being translated as pillar or tree in Christian contexts. This article covers the use of the word for other contexts.
A frying pan, frypan, or skillet is a flat-bottomed pan used for frying, searing, and browning foods. It is typically 20 to 30 cm in diameter with relatively low sides that flare outwards, a long handle, and no lid. Larger pans may have a small grab handle opposite the main handle. A pan of similar dimensions, but with less flared, more vertical sides and often with a lid, is called a sauté pan. While a sauté pan can be used as a frying pan, it is designed for lower-heat cooking.
Stilt jousting is a 600-year-old tradition of the city of Namur, Belgium, in which teams of costumed stilt wearers attempt to knock each other to the ground.
