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If an elastic band is first stretched and then subjected to heating, it will shrink rather than expand. This effect was first observed by John Gough in 1802, and was investigated further by James Joule in the 1850s, when it then became known as the Gough–Joule effect. [3] [4] Examples in Literature:
Natural fibres shrink more than synthetic fibres. Synthetic fibres are more stable due to their crystalline and thermoplastic nature. They do not shrink, whereas natural fibres are more prone to shrink because of more amorphous regions in their fibre structure which allows more absorption of water, swelling of fibres and increased lubricity ...
Length contraction is only in the direction in which the body is travelling. For standard objects, this effect is negligible at everyday speeds, and can be ignored for all regular purposes, only becoming significant as the object approaches the speed of light relative to the observer.
A lycra jacket. Stretch fabric is a synthetic fabric that stretches. Stretch fabrics are either 2-way stretch or 4-way stretch. 2-way stretch fabrics stretch in one direction, usually from selvedge to selvedge (but can be in other directions depending on the knit). 4-way stretch fabrics, such as spandex, stretches in both directions, crosswise and lengthwise. [1]
Dynamic stretch examples. Cat and cow stretch. Cat cow. Start on all fours. Your hands should be directly below the shoulders and knees directly under the hips. As you breathe in, arch the back ...
Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to float on a water surface without becoming even partly submerged.
Researchers have produced conflicting results when it comes to the best pre-workout stretch. For example, a well-cited August 2003 study showed evidence of static stretching for warm-ups worsening ...
In women, menopause can speed up bone loss "due to the loss of the protective effects of estrogen on bones," Dr. Arashdeep Litt, an internal medicine physician with Spectrum Health, tells Yahoo ...