Posted on 12/25/2008 7:55:05 PM PST by Soliton
After 10 years and many thousands of replies, I am leaving FR.
I don't really care, and I don't know why anyone else would.
I am leaving before I am banned (again). Truth doesn't seem to matter on FR. I don't know if it is donations or sympathetic opinions that do, but I have been suspended twice when I followed the rules and the people who complained to the moderators didn't, yet the moderators sided with them.
For the record, evolution is a fact and the Shroud of Turin is a fraud. I would prove it if the admin moderators would let me, but they won't. Your resident "expert", Swordmaker won't debate me because he can't.
I will work to build a forum where members have rights and truth matters.
Merry Christmas
Wrong...as I pointed out this procedure tells us very much about a person’s mass, specifically how much mass they have in regards to muscle mass vs. fat mass/body fat.
It appears your research is incomplete or your logic is faulty, but that’s why they dunk people in the tank...to find out how fat they are, they could care less about their volume.
No, that statement is incomplete. Displacement measure the MASS of a object if it is less dense than water and floats in water. A human body floats in water, ergo, it is less dense than water and the weight of the body is exactly matched by the weight of the water displaced. If the object is more dense than water, then it can only measure volume.
Is it within your mental capacity to undestand that displacement provides a measurement of volume, and when put in a formula along with weight, provides density?
Is it within your mental capacity to recall your first question about measuring a person’s mass?
They don’t dunk people in tanks just for the fun of finding out anything about vloume but how fat they are. Fat MASS...as a percentage of body WEIGHT.
Conversely, if the issue was only weight, they’d merely weigh a person and be done with it.
The two are taken together to determine a person’s percentage of body fat, or fat MASS, and this is a way of determing it, and body fat MASS is ultimately determined in number of pounds, or kilos, not volume.
It’s just that we can’t cut a person up and separately weigh their muscles and then weigh their fat.
Volume isn’t what they’re looking for, they could care less about a person’s volume ultimately, that measurement is a means to an end...body fat MASS as a percentage.
If it is so "obvious" to you, why did you suddenly change your tune after I posted Reply 787 this morning at 11:10:37 AM PST? A mere 7 hours before you started implying you already knew what you were denying in multiple posts. Did you suddenly realize your argument stating displacement only measures volume was suddenly untenable? And wrong?
What mechanism is used in a scale to determine weight/mass? Weighing something in a gravity field is merely either comparing its mass against a known reference mass as in a balance scale, or measuring the amount of deflection a—either coil or straight—the mass of the measured item causes in a spring in response to the force of gravity. Neither of these methods will work in freefall.
In freefall, to determine the mass of an object one must be able to apply a known force for a specific period of time and measure the resulting change in motion and then calculate the mass. OR... on can use the displacement method for objects less dense than water. One can also use any liquid that is denser than the object to be tested. Mercury is useful for very dense objects that would sink in water.
*chirp, chirp*
“Do you believe eliminating religion should be a main goal of working scientists?Yep, sure is.
That's a simple yes or no question.” [excerpt]
“Any other science gurus want to defend tpanther and metmom?Hey, js, I just found a wooden and graphite writing utensil with your IQ stamped on it.
What we have here is claims that gravity cannot be directly detected.
And a claim that water displaced by an immersed [human] body measures weight, mass and fat content, rather than volume.
Anyone care to defend these claims?”
Please stop posting to me.
“Please stop posting to me.” --CoyotemanSure thing.
Strange. Did you jump at him out of a closet when he was a little tyke? ;^)>
Claiming to be doing science seems to be an effective means (at least on this forum) to adopt liberal secularist god-hating values and still maitain a pretense of being conservative.
“Do not post to me”
Free Republic ^ | 8/28/07 | Admin Moderator
http://www.freerepublic.com/focus/f-news/1888013/posts?q=1&;page=472
Posted on Tuesday, August 28, 2007 5:47:37 PM by Admin Moderator
Displacement measures volume, period. If an object floats you can weigh the displaced liquid.
But that isn't what's done when clculating body fat.
To calculate body fat you find the total body volume by displacement and enter that volume in a formula that includes weight. That requires total immersion, and total imersion by itself tells you nothing about the weight of an object.
In free fall? You are saying you can use displacement to measure mass in free fall? Surely this is a typo.
*snort*
Nice try, but we aren't talking about motives and goals. We are talking about what is measured by immersion.
It's really amusing to watch you people squirm.
Read a full description of what is done in the calculation of body fat. You need to calculate density, which is a ratio of volume to weight (or mass if you insist).
Immersion measures body volume.
Why thank you for that link. Godgunsguts hsa been telling me for a long time that the mods supported his request to ban me from posting to him. I knew he was lying, but you have provided proof.
But gravity has no substance. It cannot be directly measured or observed. It can only be detected through its influence on objects within its field.
If that’s the case, why isn’t that categorized as the supernatural? It is no more detectable than God is and in no other way than God would be.
The assertion that gravity "...is no more detectable than God is and in no other way than God would be..." is simply wrong. Gravity is the first of the physical forces to be measured and defined by reliable equations.
I know of no equations defining or describing God that are equivalent to Newton's Laws or Einstein's general relativity. Nor do I know of any instruments that reliably measure the effects of the God field.
This really highlights the difference between science and theology. You may have personal knowledge of God, but your personal knowledge does not translate into formulas that can be universally confirmed. We have hundreds of religions and thousands of sects and cults.
But everybody in every country, under every political system and following every religion, can confirm Newton and Einstein.
Except in the past the mods have sided with people who make that request and they may have this time, depending on the mod.
So how does that prove he’s lying?
And why don’t you ping him when accusing him of something like that. The mods DO support pinging someone if you’re talking about them, especially if you’re saying something bad about them, something your posting history shows you consistently ignore.
http://www.freerepublic.com/focus/news/1994092/posts?page=156#156
“I would suggest both of you drop the whack-a-troll routine. BTW, Copernicus, it is considered proper forum ettiquitte to ping someone when you are mentioning them in a post - especially if you are saying something negative about them.”
The question is about what is being done in the calculation of body fat. The procedure.
The goal of the procedure is to determine body density. To calculate body density you need to know the volume and the weight.
Now you can quibble about weight vs mass, but for medical purposes, weight is generally measured by a scale. I've been weighed in a numer of doctor's offices, and the technology varies, but none have immersed me in water.
But the only easy and cheap way to measure body volume is by total immersion. It makes no difference how massive or dense a body is. Once it is totally immersed you have its volume. But weight is a separate and independent measurement.
Try to look at what is being done. You want body fat. There is some empirically derived formula for estimating body fat from density, so you want density.
Density is a ratio of volume to mass or weight, so you need both volume and weight. You get weight with a scale. You get volume by immersion.
And yes, you could do a combined procedure whereby you measure floating displacement and total displacement.
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