Best Lab Equipment

Here are some more information for Length Waters:

Is Your Drinking Water Filter Protecting Your Health?

A drinking water filter is an important health consideration for your family. They come in many different styles and sizes. Some water filters are for your kitchen, shower or even the whole house filter. So choosing the best drinking water filter for you can be confusing.  Let me help, read on please.

Health: 1st Priority

Your first priority is to get a drinking water filter that protects your health by removing all water borne contaminants.  When shopping your first guide is product performance data.  In some states, drinking water filter companies are required to provide this information along with their sales brochures.  But regulation is not nationwide, so depending on where the company is located, they may not be able or willing to disclose performance facts. 

Product Performance Data

Don’t buy any drinking water filter that does not provide product performance data. That's the first rule for shopping for drinking water filters:

Product performance data sheets will allow you to compare the effectiveness of a product (what it leaves in, what it takes out), as well as the cost of use, either in terms of gallons of water filtered or in terms of time.  It may be a little difficult to figure out at first, but here’s the simplest formula that we have found.

Simple Formula for Choosing A Water Filter

Each person uses 80-100 gallons of water, on the average, per day. Most of that goes for flushing toilets and so does not apply to drinking water filters.  The effectiveness of a  drinking water filter that attaches to the kitchen tap should be based on how many people you have in your family and how much water you expect them to drink from the tap on any given day. 

It is difficult to determine how much water a person needs on any given day.  Factors like weight, exercise and sex come into play, as well as overall health.  Our individual demands are all different.

Water Filter: Length of Usage

According to the company that provides the #1 rated drinking water filters in America, a healthy adult needs at least eight 8 ounce glasses of water per day.  Based on that “rule of thumb”, their countertop drinking water filter will last six months before the cartridge needs to be replaced.

When evaluating drinking water filters, it is assumed that a family of four will drink about 500 gallons of water in six months.  So, the cost of use for a drinking water filter takes into account the cost of replacement filters over a six month period or per 500 gallons. 

Some companies are a little sneaky.  They charge more for drinking water filters that are supposed to last longer, but the cost per gallon or per day is easier to compare.  Let’s go back to the #1 company, again.  Their drinking water filter cost 9.6 cents per gallon.
 
In terms of cost per use, it is the least expensive drinking water filter on the market.  Less effective drinking water filters cost more.

Effectiveness vs Cost
 
If you do some research, you will learn that cost is no indication of effectiveness or quality when it comes to a drinking water filter.  We often think that you get what you pay for, but that is not the case here.

 The most technologically advanced drinking water filters on the market cost the least to use and are reasonably priced initially.  Shop around, you’ll see for yourself.  For more information see my website.  -Larry L. Taylor

About the Author

Larry L. Taylor is a dedicated advocate of living a healthy lifestyle and diligent researcher of water purification systems. Visit his site at: http://www.CleanWaterPure.com to discover which drinking water filter Larry recommends after conducting extensive comparisons.

A water wave has a length of 12cm and a speed of 50cm/s. What is its frequency?

This is basic physics.

The basic relationship between wave speed, wavelength, and frequency is:

wave speed = frequency * wavelength.

This holds for all kinds of waves.

A wave with a propagation speed of 50cm/s and a wavelength of 12cm would be:

50 cm/sec = frequency * 12 cm

frequency = (50 cm/sec)/(12 cm)

frequency = 4.167 per second = 4.167 Hz

How The Chilean Quake Moved An Entire Planet
The magnitude 8.8 earthquake in Chile appears to have altered the rotation of the Earth, changing the length of the day by a tiny amount and shifting the location of the poles by a few inches. Large quakes have a history of doing just that, even if the changes are far too small to have any meaningful effect.

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