definition of absolute value

Absolute Entropies and Third Law of Thermodynamics - The third law of thermodynamics deals with the entropies of the perfect crystalline substances at absolute zero of temperature. According to third law of thermodynamics: At absolute zero the entropy of a perfectly cr..

Without units, force could only be expressed as a weak, strong, not so weak or strong force. But these expressions give a very vague and incomparable idea of the magnitude of force. Therefore, a clearly defined and easily understandable unit is essential. The SI unit of force is Newt..

Relative Humidity - Usually the amount of water vapor is less than the absolute value at a given temperature. Relative humidity is defined as the ratio of the actual amount of water vapor in the atmosphere to the absolute humidity at that temperature. For exa..

Like pressure, volume, temperature and internal energy, we have another thermodynamic variable of a system, named entropy . In a given state of equilibrium, the system has a definite value of entropy. If the system has a temperature T (in absolute scale) and a small am..

In theoretical terms, the lowest possible temperature that can be reached is the temperature of - 459.4 o F at which a gas has theoretical volume of zero. This temperature is referred to as 'Absolute Zero'. A temperature scale, with absolute zero as the starting point is called ..

The complex number Z = x + iy may be represented graphically by the point P whose rectangular co-ordinates are (x, y). Thus each point in the plane is associated with a complex number. In the figure, P defines Z = x + iy. It is customary to choose x-axis as real axis and y-axis as imagi..

Since chemical changes are always accompanied by energy changes, it indicates that reactants and products must be having certain amounts of energy. A fixed quantity of any substance is associated with a definite amount of energy, which depends upon chemical nature of the substance and its..

Let f be a differentiable function on I and let x 0 be any interior point of I. Then (a) If f attains its absolute maximum value at x 0 , then f ' (x 0 )= 0 (b) If f attains its absolute minimum value at x 0 , then f '(x 0 ) = 0. In view of the above theore..

Suppose X = a - b Let D a and D b be absolute errors in measurements of quantities a and b, values of a and b and D X be maximum error in X. Maximum absolute error in X = Maximum absolute error in a + Maximum absolute error in b From equatio..

.16 K, keeping the volume V the same as that at T. From equation (v), From the definition of absolute temperature scale, From (viii) and (ix), Now, v t r is the rms speed of the molecules at 273.16 K and hence, is constant for a given gas. Equation (x) shows that the absolu..