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  2. Rubber band - Wikipedia

    en.wikipedia.org/wiki/Rubber_band

    A rubber band ball is a sphere of rubber bands made by using a knotted single band as a starting point and then wrapping rubber bands around the center until the desired size is achieved. The ball is usually made from 100% rubber bands, but some instructions call for using a marble , [ 16 ] a crumpled piece of paper , or a ping-pong ball [ 17 ...

  3. Rubber elasticity - Wikipedia

    en.wikipedia.org/wiki/Rubber_elasticity

    Rubber elasticity is the ability of solid rubber to be stretched up to a factor of 10 from its original length, and return to close to its original length upon release. This process can be repeated many times with no apparent degradation to the rubber. [1] Rubber, like all materials, consists of molecules.

  4. Poisson's ratio - Wikipedia

    en.wikipedia.org/wiki/Poisson's_ratio

    Poisson's ratio of a material defines the ratio of transverse strain (x direction) to the axial strain (y direction)In materials science and solid mechanics, Poisson's ratio (symbol: ν ()) is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading.

  5. Charge carrier density - Wikipedia

    en.wikipedia.org/wiki/Charge_carrier_density

    The carrier density is usually obtained theoretically by integrating the density of states over the energy range of charge carriers in the material (e.g. integrating over the conduction band for electrons, integrating over the valence band for holes).

  6. Are You Wearing the Right Bra Size? How to Measure Your ... - AOL

    www.aol.com/wearing-bra-size-measure-bust...

    Step1: Find your bra band size Start by wearing an unlined, non-padded bra or a fitted t-shirt, running the measuring tape all of the way around your back where your band sits, Per Wacoal .

  7. Rubber band experiment - Wikipedia

    en.wikipedia.org/wiki/Rubber_band_experiment

    The rubber band experiment can be modeled as a thermodynamic cycle as shown in the diagram. The stretching of the rubber band is an isobaric expansion (A → B) that increases the energy but reduces the entropy (this is a property of a rubber bands due to rubber elasticity). Holding the rubber band in tension at ambient temperature is an ...

  8. Hysteresis - Wikipedia

    en.wikipedia.org/wiki/Hysteresis

    Hysteresis occurs in ferromagnetic and ferroelectric materials, as well as in the deformation of rubber bands and shape-memory alloys and many other natural phenomena. In natural systems, it is often associated with irreversible thermodynamic change such as phase transitions and with internal friction ; and dissipation is a common side effect.

  9. Smartwatch and fitness tracker bands have elevated levels of ...

    www.aol.com/lifestyle/smartwatch-fitness-tracker...

    If you have a smartwatch or fitness tracker band that contains fluoroelastomer, Alan says there’s no need to panic. “But it is good to be aware of cumulative exposure,” she says.

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