American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Having equal force or strength.
Century Dictionary and Cyclopedia
- Having equal power or force; relating to equality of force.
- n. An isodynamic line.
- Having the same value in reference to the production of energy: said of different articles of food.
GNU Webster's 1913
- adj. Of, pertaining to, having, or denoting, equality of force.
- iso- + dynamic (Wiktionary)
“So fundamental an aspect of the then dominant doctrine as, for instance, the law of isodynamic equivalence among foodstuffs, is at the most approximately true, and fails entirely when the equivalence is tested by physiological results rather than by purely physical data.”
“A great advance in measuring food value was the discovery of the isodynamic law.”
“Using this unit and applying the isodynamic law it was merely necessary to determine two things; first, how many calories a man produces in any given kind of work, second how many calories a given weight of each kind of food will yield, and then give the man as many calories of food as he needs to meet his requirements when engaged in a given kind of labor.”
“But besides these variations which we have mentioned, there are changes steadily going on, by which the isodynamic, isogonic and isoclinic lines are permanently displaced on the surface of our planet.”
“Admitting the existence of two principal solid masses whose general direction is from south to north, and that these masses are more susceptible of permeation by the ethereal fluid than the waters in which they are suspended, we have a general solution of the position of the magnetic poles, and of the isogonic, isoclinic, and isodynamic lines.”
“Their combined action may therefore be graphically represented by three systems of lines, the 'isodynamic, isoclinic', and 'isogonic' (or those of equal force, equal inclination, and equal declination).”
“The isogonic lines are the more important in their immediate application to navigation, while we find from the most recent views that isodynamic lines, especially those which indicate the horizontal force, are the most valuable elements in the theory of terrestrial magnetism.”
“We have described the distribution of magnetism on the surface of our planet according to the two forms of 'declination' and 'inclination'; it now, therefore, remains for us to speak of the 'intensity of the force' which is graphically expressed by isodynamic curves (or lines of equal intensity).”
“(isodynamic), equal inclination (isoclinic), and equal deviation (isogonic).”
“p 187 affecting the whole Earth, is especially due, since 1819, to the unwearied activity of Edward Sabine, who, after having observed the oscillations of the same needles at the American north pole, in Greenland, at Spitzbergen, and on the coasts of Guinea and Brazil, has continued to collect and arrange all the facts capable of explaining the direction of the isodynamic system in zones for a small part of South America.”
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