Jim Frysinger wrote "With those seven base units and their derived units you can measure just about everything but true love." The unit of love is $/? (euro). The more you spend, the more you love - just kidding.
If 'day' is a SI unit, then its fantastic as we can use deciday, centiday, milliday, etc. MS-Office Excel and Star-Office Calc gives function to measure decimal day. Am I right. Madan --- James Frysinger <[EMAIL PROTECTED]> wrote: > From: James Frysinger <[EMAIL PROTECTED]> > Organization: College of Charleston > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > Subject: [USMA:18534] "How many miles..." thread > Date: Mon, 4 Mar 2002 18:47:28 -0500 > Reply-to: [EMAIL PROTECTED] > > Just posted, and yes, that is the name used on the > list by the gent to whom > I'm responding: > > Glad to see you have a sense of humor, OldFart. > (grin) > > Dave's pretty close to the mark about the SI and the > light year. The seven > base (not basic) units are the meter, kilogram (not > gram), second, ampere, > kelvin, mole, and candela. With those seven base > units and their derived > units you can measure just about everything but true > love. > > As Dave said, there are 22 specially name derived > units and some which have > no special name (such as m/s). Actually, most people > need to know fewer than > a dozen of these. You already know and use some of > them, such as the second. > The volt, ampere, and watt come to us from 19th > century studies of > electricity and magnetism, in which U.S. scientists > played a big role. > > There are also some non-SI units that are allowed > for use with the SI, such > as the minute (min), hour (h, not hr), and day (d). > But the week, month, and > year are out. The month and year each come in > several different sizes so that > makes sense. The meter, kilogram, and degree Celsius > are about all you need > to know along with the ones just mentioned. If you > want, you can throw in the > liter which is just a special name for 1 dm3, or a > cube 10 cm on an edge. > That beats trying to learn the more than 2000 non-SI > units that Americans > have used in the past! > > Here are some handy metric thumb rules for you. The > Earth is 150 Gm from the > Sun and 1 Gm = 1 000 000 km. The Earth's > circumference is 40 000 km. The > Earth travels at 30 km/s around the Sun and the Moon > travels at 1 km/s around > the Earth. Most "shooting stars" are traveling at 40 > to 60 km/s when they hit > our atmosphere to cause that quick streak of light. > And light travels through > spacd at 300 Mm/s or 300 000 km/s. The nice thing > about all of this is that I > used only two units, the meter and the second. All > the rest was dealt with > with prefixes, which do the same thing to any other > unit they are attached > to. No new unit names are needed when going from > small to big sizes, as are > needed with our series inch, foot, yard, fathom, > pole, furlong, mile, and > league; the meter and the standard prefixes handle > all that and more. > > Jim > > -- > James R. Frysinger > University/College of Charleston > 10 Captiva Row Dept. of Physics > and Astronomy > Charleston, SC 29407 66 George Street > 843.225.0805 Charleston, SC > 29424 > http://www.cofc.edu/~frysingj > [EMAIL PROTECTED] > Cert. Adv. Metrication Specialist 843.953.7644 > __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/
