Firefly

The Lampyridae are a family of insects in the beetle order Coleoptera. They are winged beetles, and commonly called fireflies or lightning bugs for their conspicuous use of bioluminescence during twilight to attract mates or prey. Fireflies produce a "cold light", with no infrared or ultraviolet frequencies. This chemically produced light from the lower abdomen may be yellow, green, or pale red, with wavelengths from 510 to 670 nanometers.

About 2,000 species of fireflies are found in temperate and tropical environments. Many are in marshes or in wet, wooded areas where their larvae have abundant sources of food. Their larvae emit light and often are called "glowworms", in particular, in Eurasia. In the Americas, "glow worm" also refers to the related Phengodidae. In many species, both male and female fireflies have the ability to fly, but in some species, the females are flightless.

Biology

Fireflies tend to be brown and soft-bodied, often with the elytra, or front wings, more leathery than those of other beetles. Although the females of some species are similar in appearance to males, larviform females are found in many other firefly species. These females can often be distinguished from the larvae only because they have compound eyes. The most commonly known fireflies are nocturnal, although there are numerous species that are diurnal. Most diurnal species are not luminescent; however, some species that remain in shadowy areas may produce light.

Lucciola (1917 film)

Lucciola is a 1917 Italian film directed by Augusto Genina.

Cast

External links

Kora

Kora may refer to

Places

Music

Buildings

Languages

People

Khoemana

Khoemana, also known as Korana or Griqua, is a moribund Khoe language of South Africa.

Names

"Khoemana" (from khoe 'person' + mana 'language') is more commonly known as either Korana /kɒˈrɑːnə/ (also ǃOra /ˈkɔərə/ ~ !Gora), or Griqua (also Gri [xri], Xri, Xiri, Xirikwa), and sometimes as Cape Khoe or Cape Hottentot. The names are often treated as different languages (called South Khoekhoe when taken together), but they do not correspond to any actual dialect distinctions, and speakers may use "Korana" and "Griqua" interchangeably. Both names are also used more broadly, for example for the mixed-race Griqua people. There are (or were) several dialects of Khoemana, but the details are unknown.

Phonology

Khoemana is closely related to Khoekhoe, and the sound systems are broadly similar. The strongly aspirated Khoekhoe affricates are simply aspirated plosives [tʰ, kʰ] in Khoemana. However, Khoemana has an ejective velar affricate, /kxʼʔ/, which is not found in Khoekhoe, and a corresponding series of clicks, /ǀ͡χʼ ǁ͡χʼ ǃ͡χʼ ǂ͡χʼ/. Beach (1938) reported that the Khoekhoe of the time had a velar lateral ejective affricate, [k͡ʟ̝̊ʼ], a common realization or allophone of /kxʼ/ in languages with clicks, and it might be expected that this is true for Khoemana as well. In addition, about half of all lexical words in Khoemana began with a click, compared to a quarter in Khoekhoe.

Kora (instrument)

The kora is a 21-string lute-bridge-harp used extensively in West Africa.

Description

A kora is a mandinka harp built from a large calabash cut in half and covered with cow skin to make a resonator with a long hardwood neck. The skin is supported by two handles that run under it, and it supports a notched double free-standing bridge. It doesn't fit into any one category of musical instruments, but rather several, and must be classified as a "double-bridge-harp-lute". The strings run in two divided ranks, making it a double harp. They do not end in a soundboard but are held in notches on a bridge, making it a bridge harp. They originate from a string arm or neck and cross a bridge directly supported by a resonating chamber, making it a lute too.

The sound of a kora resembles that of a harp, though when played in the traditional style, it bears a closer resemblance to flamenco and delta blues guitar techniques. The player uses only the thumb and index finger of both hands to pluck the strings in polyrhythmic patterns (using the remaining fingers to secure the instrument by holding the hand posts on either side of the strings). Ostinato riffs ("Kumbengo") and improvised solo runs ("Birimintingo") are played at the same time by skilled players.