Grams: Weber's and Fechner's "Laws".—On th basis of experiments on the minimum detectabl differences of weights in the hand, the physiol ogist Ernst Heinrich Weber, in 1834, conclude! that the just-noticeable difference in weight fel is proportional to the weight in the hand befon the extra weight is added. For example, if ai individual cannot detect an addition smaller thai k grams added weight when he holds 10 gram; in his hand, then he would be unable to detect ar addition smaller than 10 k grams when holding 100 grams.
The idle 1,000-pound (450-kg) horse that lives on pasture during the summer will eat 20 Ib (10 kg) or more of hay daily during the winter. A horse that is ridden regularly will need grain. A horse used lightly will need % to 1 Ib (225-450 grams) of grain and !J/4 to 1V2 Ib (570-680 grams) of hay for every 100 Ib (45 kg) of body weight.Oats is the principal grain fed to horses in the United States. Corn and barley are also widely used. Wheat bran, soybean meal, and linseed meal are used in most mixed rations. |
