Search results
Results from the WOW.Com Content Network
If the ratio consists of only two values, it can be represented as a fraction, in particular as a decimal fraction. For example, older televisions have a 4:3 aspect ratio, which means that the width is 4/3 of the height (this can also be expressed as 1.33:1 or just 1.33 rounded to two decimal places). More recent widescreen TVs have a 16:9 ...
Additional precision can be provided using decimal fractions of an arcsecond. Maritime charts are marked in degrees and decimal minutes to facilitate measurement; 1 minute of latitude is 1 nautical mile. The example above would be given as 40° 11.25′ (commonly written as 11′25 or 11′.25). [13]
The map commission wanted to adopt decimal measures; and Switzerland did not have an already existing map which, like the Cassini map, used a scale close to 1:86 400, i.e. 1 line (1 ⁄ 12 of a French inch) to 100 toises (i.e. 600 French feet).
Addition of fractions is much simpler when the denominators are the same; in this case, one can simply add the numerators while leaving the denominator the same: + = +, so + = + =. [ 63 ] The commutativity and associativity of rational addition is an easy consequence of the laws of integer arithmetic. [ 64 ]
However, unlike some of the other versions of the point, PostScript uses exactly 72 points to the inch. Thus: 1 point = 1 / 72 inch = 25.4 / 72 mm = 127 / 360 mm = 352.777… micrometers. For example, in order to draw a vertical line of 4 cm length, it is sufficient to type: