Progressive rate springs have a variable spring rate. What this means is that the spring gets firmer as it gets compressed. The harder you push into a corner the stiffer the spring becomes. A specific rate springs features the same rate all the time, it does not matter what pressure is applied on the springs. Progressive rate springs tend to have better characteristics on the street where as a specific rate springs shines on the track.

Variblee rate springs defelct at different amounts per inch. An example would be: 200 lbs. = 1 inch deflection, 600 lbs. = 2 inch deflection, 1000 lbs. = 3 inch deflection, and so on. Varible coils have a soft initial spring rate and a much firmer spring rate to handle more weight, decrease sway, and improve handling.

A bifocal lens only allows you to have two vision distances (near and far) while progressive lenses give you all your range of vision from distance, intermediate and near in a smooth progression. Most people like the newer technology of the progressive because it allows for more natural vision and cosmetically they look nicer because there is no line. The upside to standard lined bifocals is that the peripheral vision is sometimes better.

Depending on each application, either single-rate or dual-rate springs are available. Dual-rate springs are just that-- a spring set with two separate rates. This is done with a short spring stacked on a longer spring. As both springs collapse they result in a soft, or initial, rate. The spring set will retain this initial rate until the short spring stops compressing. At that point, the spring rate "crosses over" to the stiffer, or final, rate.

interlaced picture is divided into two halves, the odd and even scan lines. These are "halves" are displayed odd, even, odd, even, etc., at a rate of 60 frames per second. So, in reality at any given time you are only seeing half of the picture (although because the frame rate is so high, your eyes don't notice it.) Interlaced scanning sometimes results in screen flicker and visible scan lines. Standard analog TV signals are interlaced signals.

The interest rate is the rate at which you repay the mortgage loan. It determines the principal and interest component of your monthly mortgage payment. The APR is the actual cost of borrowing in the form of an annual percentage rate. It includes the interest rate, points, mortgage insurance, and other finance charges associated with the loan. Because of these charges, the APR is often higher than the interest rate.

A progressive-wound spring is similar to a dual-rate in that it has an initial and a final rate. The drawback of a progressive spring is that the crossover point is not adjustable. How the spring is wound determines the characteristics of the spring. Depending on shaft travel of a particular shock, a progressive spring can actually crossover the initial rate in pre-load or not attain the final rate at all.

Extension and torsion springs are the two types of springs used on garage doors today. Extension springs are coiled springs installed on either side of the door above the door's horizontal track. They can be installed by the do-it-yourselfer by closely following the installation instructions and safety warnings. Torsion springs include a shaft, spring and a drum assembly, normally installed directly above the door opening.

A television image is created when a device known as the CRT (cathode ray tube) scans a constant stream of electrons across the inside of the picture tube. Each image is created with a series of horizontal lines. In interlaced scanning, the CRT starts with the top line and scans every other line all the way to the bottom of the image. The CRT then returns to the top and scans all remaining lines. This process constructs a complete image 30 times per second.

age-specific incidence rate is the number of newly diagnosed cases of a disease in a specific age group in a particular population over a specified time period per "x" number of people in that age group. Typically, five-year age groups (0-4, 5-9, 10-14, etc.) are used. The time period is usually one year and the "x" number of people in the specific age group is usually 100,000.

Yes. Sports eyewear in general tends to be safer than regular sunglasses because the lenses and frames are made of special materials that are unlikely to shatter if struck and can give you the benefits of both sunglasses and protective eyewear. Also, certain lens colors can enhance your vision for certain sports; brown, for example, is popular with golfers because it provides nice contrast on those very green golf courses.

Progressive" is an political term used loosely to identify activists of the left, favorable to sound and fair economic and social policies, equality of chances, and the defense of personal rights. The European Tribune is broadly progressive, but welcomes all contributors regardless of political self-identification, provided that they be respectful of the mission of this site, provide principled disagreement and don't engage in trollish behavior. (click to see the definition of a troll)

The teen birth rate is lower than the teen pregnancy rate because birth rates only include those pregnancies that end in a live birth (57% of all teen pregnancies in 2000). The pregnancy rate, on the other hand, includes all pregnancies - those ending in live births, abortions, and miscarriages. It's likely that both are correct, they just come from different data sets. This could be for one of two reasons.

With a fixed rate mortgage, you may pay a higher interest rate initially, but you are guaranteed this rate for the life of the loan. An adjustable-rate mortgage (ARM), on the other hand, will have a variable interest rate. Initially, though, an ARM might be able to offer lower interest rates on your quick home mortgage loan. If you can no longer manage your debt on your own, consider debt management. Let professionals help you.

Success rates for specific types of cancer are determined based on the stage of the cancer and/or the possible damage caused by the effects of chemotherapy, radiation, surgery, or the cancer itself. Vitamin B-17 can only help you and not hurt you. If you have just been diagnosed the ideal thing to do is to start metabolic therapy immediately. Dr.