Why doesn't the USA adopt officially the metric unit?

[wardric]

1 atm = 14.6959488 pounds per square inch
now then convert that to Kg/cc.
hmmmmmmmmmmmmmmmmmmmmmmmmmm?????

it's a pressure unit so it would have to be converted in Kg/cm2 (not cc or cm3).

1 atm is 1 Kg/cm2

 

[scubabeachboy]

that's a 113500 micro gram sammich!

 

[Charlie99]

14.7 lbs/in2 is the air pressure at sea level.
convert that th Kg/cc,............. hmmmmm: 1.00

I dont know if that is a coidence or planned in the metric system?????
anybody know?????

You really mean kg/cm^2, but that unit is NOT SI.


And

it's a pressure unit so it would have to be converted in Kg/cm2 (not cc or cm3).

1 atm is 1 Kg/cm2

About 3% difference, ignoring for a moment kg/cm2 is not a valid unit for pressure either.

Kilogram is a measure of mass, not force. The measure of force is Newtons, and the SI unit pressure is newtons/meter-squared, which for convenience has been assigned the name Pascal. Proper SI unit for measuring pressure in a scuba tank is NOT the bar, but instead is the Pascal, kiloPascals and megapascals. 1 bar = 100,000 Pascals.

A newton is defined as the force required to accelerate a mass of kilogram at 1 meter per second squared. The force of gravity is such that 1kg exerts a force of 9.8 newtons at sea level. 9.8 is pretty close to 10. Combine that with the standard atmosphere being 1013.25 millibar (or more correctly, 101.325 kPa), and you get close to 1 kg/cm-squared. Actually, the 2% difference between 9.8 and 10 and the 1.3% difference between bar and atm are cumulative rather than opposing, so 1kg/cm2 is about 3% less than 1atm.

Bar is commonly used for pressure, but is not part of the SI system, just as nanometers is a SI unit, the 0.1 nanometer unit, Angstromm, is not.

 

[scubabeachboy]

nerd!

 

[wardric]

Chinese imperial system

li 1
yin 15
zhang 150
bu 300
chi 1 500
cun 15 000
fen 150 000
li (small) 1 500 000
hao 15 000 000
si 150 000 000
hu 1 500 000 000

 

[RV]

I'll stick with newtons

 

[Tomeck]

1 US gill fluid........... = 0.11831 litre
1 UK gill ........ .........= 0.14201 litre​

1 US pint fluid .. . .....= 0.47321 litre​

1 US pint dry..... ......= 0.55061 litre
1 UK pint............. ...= 0.56781 litre

1 US quart fluid........ = 0.94641 litre
1 US quart dry..........= 1.10121 litre
1 UK quart...............= 1.13561 litre

1 US gallon fluid........= 3.78541 litre
1 US gallon dry ........= 4.40481 litre
1 UK gallon..............= 4.54251 litre

1 US peck ..............= 8.80971 litre
1 UK peck...............= 9.08501 litre

1 US bushel.............= 35.23891 litre
1 UK bushel.............= 36.33401 litre

1 US barrel..............= 119.24051 litre
1 US barrel of petrol..= 158.98431 litre
1 UK barrel..............= 163.5298 litre

US and UK units are different, they disput ?

 

[Tomeck]

the farenheight system was devoluped by a swiss dude, Mr Farenheight.
he used "0" as the temp at which north atlantic sea water freezes, and "180" as the body temp of a large horse.
worked great for years.
hmmmmmmmmmmmmmmm?????

:no Fahrenheit was developped by a German physician Daniel Gabriel Fahrenheit in 1724.

 

[RV]

1 US gill fluid........... = 0,118 31 litre
1 UK gill ..................= 0,142 01 litre
1 US pint fluid ..........= 0,473 21 litre​

1 US pint dry............= 0,550 61 litre
1 UK pint.................= 0,567 81 litre
1 US quart fluid........ = 0,946 41 litre
1 US quart dry..........= 1,101 21 litre
1 UK quart...............= 1,135 61 litre
1 US gallon fluid........= 3,785 41 litre
1 US gallon dry ........= 4,404 81 litre
1 UK gallon..............= 4,542 51 litre
1 US peck ..............= 8,809 71 litre
1 UK peck...............= 9,085 01 litre
1 US bushel.............= 35,238 91 litre
1 UK bushel.............= 36,334 01 litre
1 US barrel..............= 119,240 51 litre
1 US barrel of petrol..= 158,984 31 litre
1 UK barrel..............= 163,529 8 litre

US and UK units are different, they disput ?

so does it take 4 million litres of gas to fill the tank of a honda civic?

 

[Tomeck]

so does it take 4 million litres of gas to fill the tank of a honda civic?

Corrected!