جداول وحدات قياس الحجوم الأوزان والأطوال والحرارة .. كتاب التحميض والطبع والتكبير

Tables of units of measurement of volumes Weights, lengths, heat Weights, and measures of volumes of liquids There are three common ways to express | It is widely circulated for photographic purposes:

Each of these methods has its own units. These methods are: 1- The Metric or French method 2- The Imperial British method 3- The American method

Although the metric method is the most widely used and most accurate method of expression and away from ambiguity, it is seen even in many modern references that the last two methods are still valid despite the great confusion and confusion between them, as the name of their measurement units may be similar, but they are the same. They differ in their meaning, for example, we say that: the British unit of measurement Pint = 20 fluid ounces

And the unit of measurement for American volumes is Pint = 16 fluid ounces. The volume of liquid ounces in British standards also differs from its size in American standards. The gallon: = 160 fluid ounces in British standards.

It is also equal to 128 fluid ounces in American standards for the previous reasons, and given the connection of this subject with the accuracy of the composition of chemical solutions used in processing operations, so we summarize in the following tables the relationships between all these units in order to get rid of the long calculations necessary to convert . It is very important to use the cubic centimeter (cm). Note: Although it is common:

As a unit for measuring volumes according to the metric method, however, to achieve extreme accuracy, we must say that it is scientifically more correct to say that (the milli liter is the volume, because one liter of liquid) is a unit of measurement in milliliters, but it is equal to 1,000 cm. . Since the difference between them is very slight, therefore, for all practical symptoms, milliliter = one cm.