The Ondes Marteno is divided into two sections: the main area, which consists of a keyboard and a pull-wire controlled by a ribbon controller for the index finger, and the secondary section. The keys may be slightly adjusted, which has the effect of shifting the pitch. Each key has two magnets attached to it: one is fixed while the other is free to move up or down.
When you press a key, its magnet attaches itself to the smaller of the two magnets on the opposite side of the mechanism. This smaller magnet is held in place by a plastic piece called a "shank", which is attached to the body of the instrument. As long as no force is applied to the key, it will not release its magnet. But when you release the key, its magnet flies off into the larger magnet on the ribbon controller. This pulls the wire which controls the index finger, causing it to vibrate and produce a note.
The mechanism was invented by Léonard Thomas, who also patented it in 1856. He obtained a patent for an "improvement in musical instruments" that included both the mechanism and the name "ondes martenot". However, he did not actually build any such instruments himself. Instead, he hired several musicians to help him build them under his supervision. They were successful with their experiments, so much so that they soon dominated the market over traditional pianos.
The structure of the onager is built of two oak beams that bend into humps. They feature huge holes in the centre through which strong sinew ropes are stretched and twisted. A long arm is then threaded between the rope bundle, with a pin and a bag at the end. The driver uses the pin to control how far the arm extends, allowing him to guide the vehicle across country.
Onagers were used for hunting wild horses and ibex. The hunter would drive the animal to the edge of a cliff or mountain, where it would be killed with arrows or spears. The body of the onager was then stripped of its meat by other hunters waiting below.
You can learn more about them in our article The Onager: Ancient History Factbook.
Hargreaves created the concept as a metal frame with eight wooden spindles at one end. On that frame, a set of eight rovings was mounted to a beam. When the rovings were stretched, they went through two horizontal wood bars that could be clasped together. This allowed the jenny to spin both lengthwise and cross-wise.
He first demonstrated it in 1770 at the Royal Society in London. The machine was an immediate success and other manufacturers began producing versions. It was this early version that inspired Thomas Jefferson when he wrote about "American inventions" in his book Notes on the State of Virginia. He called his idea a "spinning wheel."
The spinning jenny has been used for making yarn since its introduction. It is still used in some parts of the world, especially in Africa, where it is known as a nkrumah.
In Europe, it was used mainly for testing the quality of wool before it was sold. The jenny would pick up several lengths of wool and then spit them out again all tangled up. This is because soft fibers such as wool take longer to spin than hard ones like cotton so they need more revolutions per minute (rpm) to achieve the same result. If the jenny spun too fast it would break your wrist trying to stop it!
Today, computerized machines make most types of fiber using chemicals instead.
The woods langka, kamagong, narra, ballatinao, tanguile, and Philippine mahogany are commonly used for the instrument's construction. Imported pinewood and rosewood may be used in some instruments. The neck is flat or slightly arched; the body is round or egg-shaped.
Octavins have three strings that are tuned in unison, a third, and a fifth. These strings are usually made of steel or copper and are tightly wound with horsehair or nylon thread. They are fixed at both ends. An octavin has pegs attached to its neck below the soundpost, which are used to tune it by pushing down on the string to raise or lower its pitch.
These instruments were popular in 18th-century Europe. They remained popular into the 19th century. Today they are mostly found in antique shops or musical instrument dealers. They are expensive to buy and even more expensive to maintain because of their requirement for constant tuning.
In conclusion, an octavin is a single-stringed musical instrument played by pressing buttons on its neck to produce notes.
Kirinite is constructed of high-quality acrylic resin with extremely fine strands of poly paper twisted throughout. As a consequence, the material has an entirely distinct appearance. Kirinite is also an extremely durable substance, making it ideal for knife handles and gun grips.
Acrylic is a polymer of acrylic acid or methacrylic acid. Both these acids are aliphatic carboxylic acids that contain a carbon atom bonded to three oxygen atoms and one hydrogen atom. The two main sources of acrylic acid are petroleum and wood. Acrylic resin can be colored any number of colors by adding various pigments to the mixture before it is cast. The pigment may be solid particles or flakes, but it must be able to withstand the heat used in casting acrylic resin.
When you handle kirinite items, please use caution not to cut yourself. The fine strands in the material will cause serious injuries if not handled properly. Handles should be smooth and flat without any sharp edges.
Knives and other cutting instruments should be returned to their original packaging after use. This will help protect the finish from damage.
Knife handles can be worn down over time due to constant contact with your skin, so consider treating them with a protective coating to avoid discomfort when handling knives.
The caps were occasionally fashioned of reinforced cloth or leather, allowing them to sit up on the head like a helmet, with the pointed tip curving towards the front of the head. Other Phrygian hats were constructed of soft felt, with the tip flattened against the top of the cap, hung to the side, or softly stood up. Still others were made of straw or wood shavings.
In popular culture, a phrygian cap is a tall hat with a curved crown and earflaps that extend down past the shoulders. The term is used especially for old-fashioned hats worn by men in Europe and the Americas.
Phrygia was a region in Asia Minor (present-day Turkey) where ancient Phrygians lived. The word is derived from the Greek φρύγια, phrúgya, which means "furs". Thus, phrygian caps are caps made out of furs.
According to myth, the Phrygians were a people who came from Asia Minor to settle in Europe. They invented many things that are useful today, such as car engines, airplanes, and telephones. Because they were so innovative, the other Europeans looked upon them with fear and fought against them, until the Romans decided to let them live in peace. The Phrygians were forced to serve as soldiers in their army but were given freedom to go about their own business.