Kilo hecta deca deci centi mili manuals#

What does the prefix kilo mean in chemistry?Ī prefix may be used to identify multiples of the original unit or fractions of the original unit. In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth. Length is used as an example to demonstrate the relative size of each prefixed unit….Metric Prefixes. Table below lists the most common metric prefixes and their relationship to the central unit that has no prefix. What is the difference between the prefix M and M? A nanometer is therefore equal to a billionth of a meter i.e. Used as a prefix, “nano” denotes 10-9, just as “kilo” denotes 103 and “milli” 10-3. The term “nano” comes from ancient Greek and means “dwarf” (nános = dwarf). Since 1960, the prefix is part of the International System of Units (SI). Proposed in 1793, and adopted in 1795, the prefix comes from the Latin mille, meaning one thousand (the Latin plural is milia). Milli (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3). Which of the following is the correct meaning of the prefix milli? Whether these will catch on remains to be seen, but at least if you see such an unusual prefix you might want to be aware of this.: hundred. This new system of binary prefixes has been endorsed by the International Electrotechnical Commission (IEC) for use in electrical technology. (Sounds like something you would feed the dog.) By this new system, 1024 bytes would be properly called a kibibyte or KiB. So, a new set of 'binary prefixes', distinguished by 'bi' in the name or 'i' in the abbreviation, was introduced in 1998.

But they are different numbers and sometimes it does matter.

Now, in common usage it often does not matter whether the intent was 1000 bytes or 1024 bytes. That is 2 10 - a power of two very close to 1000. But in the computer world it often means 1024 bytes. What does it mean? It might seem to mean 1000 bytes, since kilo means 1000. You have probably heard words such as kilobyte, in the context of computers. 'A picture is worth about 1.7 zmol of words.' Radius of a chlorine atom in Cl 2 ~ 0.1 nm or 100 pmīond energy for one C=C double bond ~ 1 aJ World energy production per year, ~ 0.4 ZJġ light-year (distance light travels in one year) ~ 9.5 Pmġ light-second (distance light travels in one second) ~ 0.3 Gm prefixĪbbreviation (upper and lower case are important)Ī sense of scale (for some) Most are approximate.Įnergy given off by the sun in 1 second ~ 400 YJ To help you visualize the effect of these prefixes, there is a column 'a sense of scale', which gives some examples of the magnitudes represented. In particular, the smaller prefixes such as nano, pico, femto, etc., are becoming increasingly common as analytical chemistry and biotechnology develop more sensitive methods. You will find prefixes from throughout the range as you read the scientific literature. There is no point of memorizing this, but it is nice to have a place to look them up.

Kilo hecta deca deci centi mili manuals#

Our various textbooks and lab manuals contain longer lists of prefixes, but few if any contain a complete list. In introductory chemistry we use only a few of the most common metric prefixes, such as milli, centi, and kilo.