"And Leon's getting laaaarger!"
Posted on 04/20/2008 5:58:33 PM PDT by BGHater
In the more than a century since 'perfect' platinum-iridium cylinders were first used as the world's kilogram standards, their weights have mysteriously fluctuated. Scientists are rethinking what the measure means.
GAITHERSBURG, MD. -- Forty feet underground, secured in a temperature- and humidity-controlled vault here, lies Kilogram No. 20.
(Excerpt) Read more at latimes.com ...
Kindly tell me then, what is the SI unit of mass? (Since you’re the expert, and all.)
Since I’m so confused, please straighten me up by telling me what is the SI unit of mass. Thank you in advance.
Force or mass? KPa?
Your problem is that your are confusing terms.
The metric unit of weight (or any other force - such as that of a stretched spring, or a bat striking a ball, or a locomotive pulling a train) is called the newton. One newton is defined as the amount of force required to cause one kilogram to accelerate one meter per second every second.
"And Leon's getting laaaarger!"
Pascals are units of pressure, which is force per unit of area. I asked about mass. What is the SI unit of mass? How can I confuse anything, when I’m asking a simple question?
No, it didn't start with rocks. It started with organic compounds or other life. You see, you don't understand the theory of evolution.
Evolution is a theory attempting to describe how live diversified on Earth. It is NOT a theory relating to the rise of life in the first place.
This is why ID is irrelevant to evolution, and why ID supporters are readily (and correctly) dismissed from discussions about evolution.
ID concerns how life began, not how it diversified.
Evolution concerns how life diversified, not now it began.
The two are mutually exclusive. ID'ers demanding they have a seat at the table makes as much sense as having a restaurant manager demand a seat at a panel discussing neurotoxology.
On April 5, 1893 the inch was redefined as precisely 1/39.37 meter, and in a very real sense we have been using the metric system ever since. In 1959 the length of the inch was shortened slightly to its present definition of 2.540 000 000 centimeters.
That’s nice, you have told me the SI unit of force is the Newton (which somehow seems eerily similar to something I wrote in one of my own posts). But what I asked about was what was the SI unit of mass? I guess it isn’t the Newton, because, as you say, that’s a unit of force. So what is the SI unit of mass? Thanks in advance.
On an unrelated note, could you please tell me what “pwn3d” means. Thanks in advance again.
Wow, now you’re talking about inches and meters, yet you call me confused. What is the SI unit of mass, again?
We have the wreckage of a very costly Mars lander, buried somewhere on the surface of Mars, to prove that idiotic idea to be rubbish.
Up until that crash happened, every vehicle launched had been completely computed in imperial units. at some point during Bush 41's regieme, they began to be converted, after computation, into SI units for purely political reasons. Now the conversion is no longer done, and they leave the engineers to do it the way that has always worked
Would you accept the magazine Physics World as knowing what a kilogram is? See this article for the following statement:
Scientists have proposed two ways to redefine the unit of mass. The first is based on the Planck constant and requires a 1-kilogram mass to be supported against Earth’s gravity using a precisely measured magnetic force.
See, a kilogram is a unit of mass, and when it has a gravitational acceleration applied to it, you get a force. That whole F=ma thing.
A kilogram is a unit of mass. It exerts a force (weight), because of gravitational attraction between masses (the earth and the kg of mass), but the force will change based upon the gravitational attraction between the two.
” Now the conversion is no longer done, and they leave the engineers to do it the way that has always worked”
Yep, we all know that the metric system was not born out of necessity or by scientists. It was born out of politics and still is.
Evolution theory is just that. No "science" involved.
ID however, embraces science and always has contrary to vicious rumor. The study of "life" will eventually lead to understanding it's creator. There is no fear of that, unless you were an evolutionist of course.
Asd we continue to unravel and understand our DNA, we see the intelligence involved in it's design.
You can go keep looking for fossils that don't exist, we'll stick to the labs and work on the science.
Whoever told you that must be still laughing. AutoCAD uses two units: the base unit, and a secondary unit that is twelve times the base unit. It is totally up to the user to decide what the base unit is. Architects call it an inch, while for engineering purposes it can be either a foot, a meter, or a millimeter. The software doesn't have any way of knowing, or caring what you call it. (I have been using AutoCAD for 25 years)
You're mixing up apples and oranges and getting rotten fruit salad ;o)
In 1959 a new unit was created, called the "international foot." That foot was the only one that uses an inch that is defined relative to the meter. The real foot, which is called the "U.S. Survey Foot" is still defined based on a physical standard unit that is stored at the NIST. That unit cannot be changed for serious legal reasons, and it is the only "foot" that can legally used for measurement. (Nobody really knows what the "international foot" is good for)
I'm suspicious of wording in the LA Times article versus your reply; you said what I wanted to hear.
From first paragraph of LA Times article :
In the more than a century since 'perfect' platinum-iridium cylinders were first used as the world's kilogram standards, their weights (emphasized by Amendment 10) have mysteriously fluctuated.From your reply:
That's why they aren't measuring the weight (emphasized by Amendment10) of the masses.Are physics flunkys at the LA Times screwing up the report?
Also, were the original masses calibrated in the same laboratory and then sent to remote locations? And were today's test masses also calibrated in the original laboratory, or were they calibrated at the locations where the original mass references wound up? Other possibilities?
If you can't understand the basic definition of what a kilogram is (a measure of mass), how can you get the rest of science right?
Hey, if they can't get basic facts about politicians correct, I'll give them ZERO credibility about something like physics! :D
Wondered that myself.
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