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Metric Relationships  
The above chart shows the relation of  term watt is a basic unit). The number of  
the most used values in the American and
the metric systems of notation. 
steps so counted is three, and the direction
was to the left. Therefore, 5.0 milliwatts is 

the equivalent of .005 watts.  
This chart also serves to quickly locate  
the decimal point in the conversion from
one metric expression to another. Example: Convert 5.0 milliwatts to watts. Place the finger on milli and count the num ber of steps from there to units (since the 
Example: Convert 0.00035 microfarads to
picofarads (micromicrofarads). Here the number of steps counted will be six to the right. Therefore 0.00035 microfarads is the equivalent of 350 picofarads. 

New International Codes  
The gradual adoption in this country of  2.  "Kilomega" (km) has been replaced  
new international codes for metric prefixes  by "giga" (G).  
amd measurement terminology by govern  "Hertz". This term was recently adopted  
ment agencies, industry, technical maga
zines, book publishers and others, is slowly changing the system of measurement and evaluation codes in general use today. 
in the United States but it is not represented
in this handbook. It is, however, already used by some publishers in place of"cycles" in references to frequency specifications. 

The old familiar terms such as "cycles"  
(cyc), "kilocycles" (kc) and "megacycles"  
Acceptance of the new codes here, how  (Mc), are replaced by "Hertz" (Hz),  
ever, has been slow. We have , therefore,
continued to use the more familial termi nology in this handbook with the following exceptions which appear in the metric 
"kilohertz" (kHz) and "megahertz"
(MHz). 

To combine two of these changes in one  
tables in the next two pages:

specification, the old term "kilomegacycles"
(kMc) has become "gigahertz" (GHz). 

1. 
The cumbersome term "micromicro"
has been replaced by "pico". Micro microfarad" (µµf) now becomes "pico farad" (pf). 
Heinrich Rudolph Hertz, was born in  
Germany in 1857 and died in 1894. He was
the first scientist to dect, create and measure electromagnetic waves. 

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