Stretching is the activity of gradually applying tensile force to lengthen, strengthen, and lubricate muscles, often performed in anticipation of physical exertion and to increase the range of motion within a joint. Stretching is an especially important accompaniment to activities that emphasize controlled muscular strength and flexibility, such as ballet, acrobatics or martial arts. Stretching is also believed to help to prevent injury to tendons, ligaments and muscles by improving muscular elasticity and tone. In addition, st ...

Including:

• Stretching - Stretching in preparation for a physical activity
• Stretching - Stretching technique

Read more here: » Stretching: Encyclopedia - Stretching

Stretching: Various parts of the body are stretched by assuming different positions to help eliminate stress and tension and increase flexibility. 

(See also: Stretching, Alternative Health, Body Mind and Soul)

In the New Year, may your right hand always be stretched out in friendship, never in want.

- Irish toast

(See also: Inspirational Quotes, Love Quotes, Friendship Quotes, Life Quotes)

The objective with Plough Pose (Halasana) is to stretch your cervical and thoracic regions.

Read more here: » Yoga Poses: The Plough Pose - Yoga Pose

Before engaging in intense physical activity such as a workout or sporting event, it is helpful to stretch the muscles to be exercised in the following manner: Joint rotation, whereby joints are lubricated by circular motions A mild warmup sufficient to generate slight perspiration Static stretching, whereby muscles are gradually stretched with the body at rest Dynamic stretching, whereby muscles are stretched by alternately contracting opposing muscles, such as by twisting the torso or by swinging a s ...

See also:

Stretching, Stretching - Stretching in preparation for a physical activity, Stretching - Stretching technique

Read more here: » Stretching: Encyclopedia II - Stretching - Stretching in preparation for a physical activity

Forward & Down yoga pose is similar to the Forward Bend, but here gravity helps to stretch your body down.

Read more here: » Yoga Poses: Forward Down - Yoga Position

Running is by definition the fastest means for an animal to move on foot. It is defined in sporting terms as a gait in which at some point all feet are off the ground at the same time. It is a form of aerobic exercise. Running - Jogging. Jogging is a poorly-defined term which generally refers to a type of slow running, previously called "roadwork" when athletes in training, such as boxers, customarily ran several miles each day as part of their conditioning. In the 1960s or 1970s the word "roadwork" ...

Including:

• Running - Jogging
• Running - Competitive running
• Running - Running injuries
• Running - Running speed
• Running - Types of running events
• Running - Classification of running by distance

Read more here: » Running: Encyclopedia - Running

The original Cinerama system is a widescreen process which works by simultaneously projecting images from three synchronized 35 mm projectors onto a huge, deeply-curved screen, subtending 146º of arc. The screen is made of adjacent vertical strips, each of which faces the audience, in order to prevent light scattered from one side of the curve from impinging on the other side. The spectacular display is accompanied by a high-quality, six-track, stereophonic sound system. The original system involved shooting with three synchro ...

Including:

• Cinerama - History
• Cinerama - Single-Film Cinerama: Ultra-Panavision 70 and Super-Panavision 70
• Cinerama - Cinerama's premiere
• Cinerama - Cinerama today
• Cinerama - Cinerama video stretching mode

Read more here: » Cinerama: Encyclopedia - Cinerama

Butt plugs are sex toys that are designed to be inserted in the anus and rectum for sexual pleasure. In some ways, they are similar to a dildo, but they tend to be shorter, and to have a flared end to prevent the device from being lost inside the anus. Butt plugs are popular with and can be pleasurable for both men and women, both heterosexual and homosexual. Unlike the vagina, which is closed off by the cervix, the rectum leads to the sigmoid colon. Objects which are inserted into the rectum can therefore potentially travel up into the bowel: the f ...

Read more here: » Butt plug: Encyclopedia - Butt plug

The worm-like chain (WLC) model in polymer physics is used to describe the behavior of semi-flexible polymers; it is sometimes referred to as the Kratky-Porod worm-like chain model. Worm-like chain - Theoretical Considerations. The WLC model envisions an isotropic rod that is continuously flexible; this is in contrast to the freely-jointed chain model that is flexible only between discrete segments. The worm-like chain model is particularly suited for describing stiffer polymers. At room tempe ...

Including:

• Worm-like chain - Theoretical Considerations
• Worm-like chain - Biological Relevance
• Worm-like chain - Stretching Worm-like Chain Polymers

Read more here: » Worm-like chain: Encyclopedia - Worm-like chain

An overtone is a sinusoidal component of a waveform, of greater frequency than its fundamental frequency. Usually the first overtone is the second harmonic, the second overtone is the third harmonic, etc. Use of the term overtone is generally confined to acoustic waves, especially in applications related to music. Despite confused usage, an overtone is either a harmonic or a partial. A harmonic is an integer multiple of the fundamental frequency. A partial or inharmonic overtone is a non-integer multiple of a fundamental freq ...

Read more here: » Overtone: Encyclopedia - Overtone

In mathematics, an ellipse (from the Greek for absence) is a plane algebraic curve where the sum of the distances from any point on the curve to two fixed points is constant. The two fixed points are called foci (plural of focus). An ellipse is a type of conic section: if a conical surface is cut with a plane which does not intersect the cone's base, the intersection of the cone and plane is an ellipse. For a short e ...

Including:

• Ellipse - Parametrisation
• Ellipse - Eccentricity
• Ellipse - Semi-latus rectum and polar coordinates
• Ellipse - Area
• Ellipse - Circumference
• Ellipse - Stretching and Projection
• Ellipse - Reflection property
• Ellipse - Ellipses in physics
• Ellipse - Ellipses in computer graphics

Read more here: » Ellipse: Encyclopedia - Ellipse

In acoustics and telecommunication, the harmonic of a wave is a component frequency of the signal that is an integer multiple of the fundamental frequency. For a sine wave, it is an integer multiple of the frequency of the wave. For example, if the frequency is f, the harmonics have frequency 2f, 3f, 4f, etc. In musical terms, harmonics are component pitches of a harmonic tone which sound at whole number multiples above, or "within", the named note being played on a musical instrument. Non-integer mu ...

Read more here: » Harmonic: Encyclopedia - Harmonic

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and most viruses). DNA is a long polymer of nucleotides and encodes the sequence of the amino acid residues in proteins using the genetic code, a triplet code of nucleotides. In complex cells (eukaryotes), such as those from plants, animals, fungi and protists, most of the DNA is located in the cell nucleus. By contrast, in simpler cells called prokaryotes (the eubacter ...

Including:

• DNA - Overview
• DNA - DNA in practice
• DNA - DNA in crime
• DNA - DNA in computation
• DNA - Overview of molecular structure
• DNA - The role of the sequence
• DNA - DNA replication
• DNA - Mechanical properties relevant to biology
• DNA - Strands association and dissociation
• DNA - Circular DNA
• DNA - Great length versus tiny breadth
• DNA - Entropic stretching behavior
• DNA - Different helix geometries
• DNA - Non-helical forms
• DNA - Direction of DNA strands
• DNA - Chemical nomenclature 5' and 3'
• DNA - Sense and antisense
• DNA - Distinction between sense and antisense strands
• DNA - As viewed by topologists
• DNA - Single-stranded DNA ssDNA and repair of mutations
• DNA - The history of DNA research
• DNA - First isolation of DNA
• DNA - Establishing a link between heritable traits and chromosomes
• DNA - Discovery of the structure of DNA
• DNA - Bibliography

Read more here: » DNA: Encyclopedia - DNA

Inharmonicity "stretches" harmonics beyond their theoretical frequencies, and higher harmonics are stretched proportionally more than lower. Thus, in our example of an octave, exactly matching the lowest common harmonic causes a slight amount of stretch, matching the next higher common harmonic causes a greater amount of stretch, and so on. If the interval is a double octave, exactly matching the upper note to the fourth harmonic of the lower complicates the tuni ...

See also:

Stretched tuning, Stretched tuning - Fundamentals and harmonics, Stretched tuning - Intervals and inharmonicity, Stretched tuning - Vibration of wire strings, Stretched tuning - Tines and reeds, Stretched tuning - Effects on tuning, Stretched tuning - References and further information

Read more here: » Stretched tuning: Encyclopedia II - Stretched tuning - Effects on tuning

In most musical instruments, the tone-generating component (a string or resonant column of air) vibrates at multiple frequencies simultaneously: a fundamental frequency that is usually perceived as the pitch of the note, and harmonics or overtones that are multiples of the fundamental frequency and whose wavelengths therefore divide the tone-generating region into simple fractional segments (1/2, 1/3, 1/4, etc.). (See harmonic series.) The fundamental note and its harmonics sound together, and the amplitude relationships among them ...

See also:

Stretched tuning, Stretched tuning - Fundamentals and harmonics, Stretched tuning - Intervals and inharmonicity, Stretched tuning - Vibration of wire strings, Stretched tuning - Tines and reeds, Stretched tuning - Effects on tuning, Stretched tuning - References and further information

Read more here: » Stretched tuning: Encyclopedia II - Stretched tuning - Fundamentals and harmonics

In tuning, the relationship between two notes (known musically as an interval) is determined by evaluating their common harmonics. For example, we say two notes are an octave apart when the fundamental frequency of the upper note exactly matches the second harmonic of the lower note. Theoretically, this means the fundamental frequency of the upper note is exactly twice that of the lower note, and we would assume that the second harmonic of the upper note will exactly match the fourth harmonic of the lower note. On instruments strung with metal wire, however, neither ...

See also:

Stretched tuning, Stretched tuning - Fundamentals and harmonics, Stretched tuning - Intervals and inharmonicity, Stretched tuning - Vibration of wire strings, Stretched tuning - Tines and reeds, Stretched tuning - Effects on tuning, Stretched tuning - References and further information

Read more here: » Stretched tuning: Encyclopedia II - Stretched tuning - Intervals and inharmonicity

When a stretched wire string is excited into motion by plucking or striking, a complex wave travels outward to the ends of the string. As it travels outward, this initial impulse forces the wire out of its resting position all along its length. After the impulse has passed, each part of the wire immediately begins to return toward (and overshoot) its resting position, which means vibration has been induced. Meanwhile, the initial impulse is reflected at both ends of the string and travels back toward the center. On the way, it interacts with ...

See also:

Stretched tuning, Stretched tuning - Fundamentals and harmonics, Stretched tuning - Intervals and inharmonicity, Stretched tuning - Vibration of wire strings, Stretched tuning - Tines and reeds, Stretched tuning - Effects on tuning, Stretched tuning - References and further information

Read more here: » Stretched tuning: Encyclopedia II - Stretched tuning - Vibration of wire strings

There are few health issues directly related to stretching piercings. Most stretching methods do not create a wound, properly stretched piercings do not need to heal after being stretched, although they are usually given a "rest" before further stretching. If an individual's skin elasticity and vascularity allow, most piercings can be stretched far beyond their initial size. Piercings larger than 2 gauge rarely close up, regardless of the amount of time that passes, and even smaller piercings may be quite noticeable years after their removal ...

See also:

Stretching body piercing, Stretching body piercing - Stretching Methods, Stretching body piercing - Health Issues, Stretching body piercing - Jewelery for stretched piercings, Stretching body piercing - History and Culture, Stretching body piercing - Gauges and Other Measuring Systems

Read more here: » Stretching body piercing: Encyclopedia II - Stretching body piercing - Health Issues