Mm-dd-yy

Dann said:
The Chinese have always been using yy-mm-dd since who knows when.

A couple thousand years later, it miraculously fits exactly with computerized data sorting. :D
However, in Chinese speaking, fractions are said with the denominator first, but now we don't say "(out of ) Four (parts), three (parts)", do we?

Anyway, why do we call the system using yards and stuff the "Standard System", while the metric system is the "International System"?
 
Tomoyo said:
However, in Chinese speaking, fractions are said with the denominator first, but now we don't say "(out of ) Four (parts), three (parts)", do we?

Anyway, why do we call the system using yards and stuff the "Standard System", while the metric system is the "International System"?

You call it the standard system because it's use. I call it standard (full name is International Standard Units), and yours Imperial system
 
the point of the metric system is not "where the measurments came from", which is arbitrary, especialy since they've been DUMBLY redefined by atoms and speed of light and so on.

they should be defined relative to eachotehr.

the meter, i'm fine with determening via light speed or anything else.
the second should be redefined as 1/(24*60*60) of a day (which IS a natural timeframe).

most of the others can be defined by those two as i understand it.

liter is volume of a cubic 10th of a meter
kilogram is the weight of a liter of water
ampres can probably be defined some better way then what feringinar has up there. as some sort of meter/second per liter per gram or something like that. dont know enough about electricity to say for sure.
temperature degrees are easy. 1 degree is 1/100 of the temperature difference between water's freezing and boiling point. the 0 of the scale is absolute zero at which atoms stand still.
mole is a wierd one as far as i know. but isnt it just a number. aint someone figured out what the number is. iirc it is the number of atoms required to make a mass of an element weigh the number of grams that are its atomic number or something. though i still cant figure out the use for it.
never even heard of the lumina thing.
 
What's really annoying is the way you guys write decimals. Seeing something like 7,2 always makes me stop for a second when reading.
 
cgannon64 said:
What's really annoying is the way you guys write decimals. Seeing something like 7,2 always makes me stop for a second when reading.
That's a good point. How do they write co-ordinates? Is it (x.y) or (x,y)? And if it's the latter, how do you distinguish it from 4*(6,3)?
 
WS78 said:
What's up with the way Americans (US) use the month-day-year system when the rest of the world, the US military and finance sector use the regular day-month-year system?

It still amazes me to see people who always think their way is the right way. At least we know which side of the road to drive on...
 
RoddyVR said:
the second should be redefined as 1/(24*60*60) of a day (which IS a natural timeframe).
The length of a day gets shorter over time due to tidal effects

RoddyVR said:
1 degree is 1/100 of the temperature difference between water's freezing and boiling point. the 0 of the scale is absolute zero at which atoms stand still.
That's exactly what was done - absolute zero is ~-273 celcius, the triple point of water is just above freezing but isn't dependent on arbitrary athmospheric pressure, which 'normal' freezing and boiling points are.
RoddyVR said:
mole is a wierd one as far as i know. but isnt it just a number. aint someone figured out what the number is. iirc it is the number of atoms required to make a mass of an element weigh the number of grams that are its atomic number or something. though i still cant figure out the use for it.
It's very handy if you do chemistry - making up solutions of a certain strength is very handy due to the molar system.
 
The length of a day gets shorter over time due to tidal effects
ok, you're right, so i guess they'd have to define the second as:
1/(24*60*60)th of the day of November 15th, 1980. (it dont matter which day you pick, but i like that one, cause it has special meaning to me).

It's very handy if you do chemistry - making up solutions of a certain strength is very handy due to the molar system.
oh, having read that, for some reason it started making sense. maybe i understood it before and forgot. but you mean like if you want to know how much oxigen and how much hydrogen to have so that when you combine and light them, you get water with no leftovers. cool.
 
John HSOG said:
House numbers, in America, are like that, as well.

1,3,5,7,9
2,4,6,8
That system also comes from France. ;)
Like the metric system. :p

Actually it's in Paris we started to give pair numbers on one side and impair numbers on the other side. It's been invented in the 19th century but I don't exactly remember if it was before or after Haussman.

Now about the very big numbers for houses in the US, the explanation is pretty simple. It's such a case because streets are very long, they cross the whole city. Whereas in Europe, our streets would always end on a square or on a circus.

What is quite interesting by the way is that it's impossible to build squares or circus in Simcity. They have thought about putting infirmaries, toll boots, tennis courts... but no squares ! You don't realize it but that totally changes your life in your inconscious.
 
RoddyVR said:
ok, you're right, so i guess they'd have to define the second as:
1/(24*60*60)th of the day of November 15th, 1980. (it dont matter which day you pick, but i like that one, cause it has special meaning to me).
If they were to use that, they'd probably use the first of January, 1900. It's some sort of reference point, for whatever reason. The normal ("civil") calendar and the astronomical one coincide exactly at noon that day.
 
How could we *know* today how long a certain date in the past was, unless we measuerd that day length very accurately by a system that doesn't change over time. Say if we counted osscilations of a cesium atom on Ist Jan 1900, or 15th Nov 1980... or we could just use the system that was decided on by people who gave this a lot of thought.

The ampere has a very obscure definition - it was probably the most post hoc one, since the whole Volt/Amp/Ohm thing was already in widespread use and would have caused chaos to change.
"Take two infinitely long metal rods one meter apart. Get ready to measure an insanely small force between them. Next.." - I mean, come on, who are you kidding.
 
Well, I may have been a little confused about the house numbering, but putting the house number before the flat number is still illogical!

I didn't know Americans called it the "standard" system. I've always known it as "imperial". I suspect that Americans don't like the thought of being part of the British Empire (strange!) and have renamed it rather than go to the bother of changing to metric...

In Britain, by the way, there are many strange ways of numbering houses. The standard is the 1,3,5... and 2,4,6... one, but you can never be sure. For example, I live in an area in London where the streets form a grid system, almost like an American city. However, rather than have *street* names, we have *square* names. That means that all the houses on one *grid* are thought of as belonging to the same square. That means that the houses on the other side of the street are officially on a different square, because they back onto the next grid along. See? I recently had to direct a very puzzled Australian couple who obviously thought I was mad when I tried to explain why they were walking along Leinster Square when the sign on the other side of the road said Prince's Square. They evidently thought I was making it all up.
 
While we're all praising the French for their metric system, didn't they once try to make it for hours and calenders and failed miserably? :p
 
The Last Conformist said:
Having a ten-day week (and thus nine workdays for every day off) may have had something to do with that. As may the fact that more people are convinced of the holiness of Sundays than of inches.
I would have expected a 5 day working week with a 5 day weekend. In the interest of continuity of course.
 
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