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A Roberval balance shown responding to two masses of equal weight. The Roberval balance is a weighing scale presented to the French Academy of Sciences by the French mathematician Gilles Personne de Roberval in 1669. In this scale, two identical horizontal beams are attached, one directly above the other, to a vertical column, which is attached ...
A balance bike (or run bike) is a bicycle without pedals that learners propel by pushing their feet against the ground. [1] By allowing children to focus on developing their sense of balance and coordination before introducing pedalling, balance bikes enable independent riding more quickly than training wheels. [2] [3]
Balance board. A balance board [1] is a device used as a circus skill, for recreation, balance training, athletic training, brain development, therapy, musical training and other kinds of personal development . It is a lever similar to a see-saw that the user usually stands on, usually with the left and right foot at opposite ends of the board.
The sense of balance or equilibrioception is the perception of balance and spatial orientation. [1] It helps prevent humans and nonhuman animals from falling over when standing or moving. Equilibrioception is the result of a number of sensory systems working together; the eyes ( visual system ), the inner ears ( vestibular system ), and the ...
Balance disorder. A balance disorder is a disturbance that causes an individual to feel unsteady, for example when standing or walking. It may be accompanied by feelings of giddiness, or wooziness, or having a sensation of movement, spinning, or floating. Balance is the result of several body systems working together: the visual system (eyes ...
The balance (also balance scale, beam balance and laboratory balance) was the first mass measuring instrument invented. In its traditional form, it consists of a pivoted horizontal lever with arms of equal length – the beam or tron – and a weighing pan suspended from each arm (hence the plural name "scales " for a weighing instrument).
Balanced literacy is a theory of teaching reading and writing the English language that arose in the 1990s and has a variety of interpretations. For some, balanced literacy strikes a balance between whole language and phonics and puts an end to the so called reading wars. Others say balanced literacy, in practice, usually means the whole ...
Training wheels, known as stabilizers outside North America, [1] [2] are a set of additional wheels attached to the rear wheel of a bicycle, effectively turning it into a tricycle as beginners learn to ride independently. [3] Since the late 1990s, balance bikes have gradually replaced training wheels as a more effective tool for developing a ...