Axis Stem

REALLY HARD PHYSICS QUEStion?

As plants grow they tend to align their stems and roots along the direction of the gravitational field. This tendency, which is related to differential concentrations of plant hormones known as auxins, is referred to as gravitropism. As an illustration of gravitropism, experiments show that seedlings placed in pots on the rim of a rotationg tumtable do not grow in the vertical direction. Do you expect their stems to tilt inward-toward the axis of rotation or outward? Explain

I would expect them to grow inward. Plants grow in the opposite direction of the gravitational field according to this theory.

On a rotating turntable, the fact that the reference frame is accelerating creates an illusion of an additional gravity pointing to the outside of the turntable, as an object within the reference frame would observe. This is the centrifugal effect (do not call it a force).

Combining this pseudogravity with the real gravity of earth, as vectors, the apparent gravitational field within the reference frame points outward and downward (I believe it is a horizontal turntable on a vertical axis). Since, according to the equivalence principle, systems within a reference frame cannot distinguish the pseudogravity due to acceleration from the real gravity created by external bodies of mass, the plants cannot either. The plants thus determine that “up” is toward the center and in the normal direction of up.

I would argue, that the location of the source of light may also play a role. Plants try to grow toward the source of light, and opposite gravity. I’ve seen an experiment’s results of growing seedlings in ordinary gravity, but with a light source to the side. The plants grow at an angle toward the light source, but not as well as those which can grow directly upward to an overhead light source.

Ritchey Comp Stem 4-Axis 1-1/8 100mm 6D 31.8 White $44.93

RITCHEY “CLASSIC” 4-AXIS Bike Stem 6/84deg 31.8 x 130mm $79.95

Ritchey Wcs 4Axis Alloy Stem 120 mm 31.8mm Bar Clamp black $6.50

2010 RITCHEY WCS 4 AXIS OS Road Stem 100 mm 73D 31.8 $53.99

Vintage Cinelli AX Quill Road Racing Bike Stem 130mm Used $40.00

ritchey wcs axis 4x 110mm stem mtb 6 Degree Rise ec nr 31.8 $19.99

RITCHEY WCS 4-AXIS Road Mtb STEM 17/73deg 31.8 x 130mm $72.95

Ritchey Comp 4Axis Stem: 90mm; 84/96d; 31.8; Black $44.99

Ritchey Pro 4-Axis Stem: 90mm; 84/96d; Black; 31.8 $56.99

RITCHEY WCS 4-AXIS Black Road BIKE STEM 31.8 120 NEW $39.87

NEW!! Ritchey WCS 4-Axis Matrix stem 110mm $37.58

Ritchey WCS 4-axis Stem 120mm 31.8 6/84 Degree $53.87

7pcs Titanium / Ti Bolt Ritchey WCS 4-Axis Carbon Stem (M5x16mm 6pcs, M6x35mm) $22.00

Ritchey WCS 4-Axis Stem 84d 100mm 31.8mm 1 1/8″ Alloy BB Black 84 Degree $68.95

RITCHEY WCS 4-AXIS BLACK ROAD BIKE STEM 31.8 120 NEW $39.87

Ritchey PRO 4Axis Stem – 31.8mm clamp, 120mm $25.00

Ritchey 4-Axis Matrix Carbon Stem 31.8 120mm 84 Degree 1-1/8″ Black $82.99

Ritchey WCS 4-Axis Stem 84d 70mm 31.8mm 1 1/8″ Alloy BB Black 84 Degree $68.95

Ritchey Pro 4 Axis Stem 110mm/6° for 31.8mm bar $15.00

RITCHEY WCS 4-AXIS ROAD Mtb Stem 17/73deg 31.8 x 110mm $72.95

RITCHEY WCS 4-AXIS ROAD BIKE STEM OS 31.8 110 110mm NEW $49.87

RITCHEY WCS 4-AXIS Road Bike Stem – 31.8 / 120mm $79.99

New 2012 Ritchey WCS UD Carbon Matrix 4-Axis Stem – 130 mm – 31.8mm $125.95

New 2012 Ritchey WCS UD Carbon Matrix 4-Axis Stem – 110 mm – 31.8mm $125.95

New 2012 Ritchey WCS UD Carbon Matrix 4-Axis Stem – 100 mm – 31.8mm $125.95

New 2012 Ritchey WCS 3K Carbon Matrix 4-Axis Stem – 90 mm – 31.8mm $125.95

Ritchey WCS 4-Axis 44 Bike Stem 6/84deg 31.8 x 90mm $86.95

Ritchey WCS 4-Axis Matrix UD Carbon Bike Bicycle Stem 31.8 x 90mm $129.95

New 2012 Ritchey WCS 3K Carbon Matrix 4-Axis Stem – 110 mm – 31.8mm $125.95

New 2012 Ritchey WCS 3K Carbon Matrix 4-Axis Stem – 120 mm – 31.8mm $125.95

New 2012 Ritchey WCS 3K Carbon Matrix 4-Axis Stem – 130 mm – 31.8mm $125.95

New 2012 Ritchey WCS 4-Axis 44 Stem – Wet Black – 130 mm – 31.8 mm $98.95

New 2012 Ritchey WCS 4-Axis 44 Stem – Wet Black – 120 mm – 31.8 mm $98.95

New 2012 Ritchey WCS 4-Axis 44 Stem – Wet Black – 110 mm – 31.8 mm $98.95

New 2012 Ritchey WCS 4-Axis 44 Stem – Wet Black – 90 mm – 31.8 mm $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet Red – 130 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet Red – 120 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet Red – 110 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet Red – 100 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet Red – 90 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 90 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 100 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 110 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 120 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 130 mm – 31.8 mm – 84D $98.95

New 2012 Ritchey WCS 4-Axis Stem – Wet White – 140 mm – 31.8 mm – 84D $98.95

6pcs Titanium / Ti Bolt Ritchey WCS 4-Axis Carbon Stem $18.00

6pcs Titanium / Ti Bolt Ritchey WCS 4-Axis Carbon Stem $18.00

Ritchey WCS 4-axis Stem 120mm 31.8 6/84 Degree $53.87

VINTAGE SR AX-100 BICYCLE 22.2 ALLOY STEM 100 MM REACH $24.00

RITCHEY WCS 4-AXIS ROAD MTB STEM 6/84deg 31.8 x 120mm $69.95

Ritchey WCS Axis Stem Wet White 17/73-110mm $40.00

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Article Marketing – Correlating Revenue To The Articles You Write

If you are involved in writing or using articles to establish your credentials to share skills and knowledge to a broader internet community, it may be time to pause for a while and to consider to what extent this activity of article marketing is bringing in revenue to your online efforts.

While article marketing is a function of many factors that may not lend itself to an exact computation of benefits in monetary terms, we cannot run away from the fact that when it comes to profitabilty of any online business, we have to think in terms of dollars and cents.

This is where statistics play a big part in correlating revenue to the articles we write.

Is it possible, for example, to project revenue to the number of articles we write, as there are factors peculiar only to the particular author that are not common to any other individual?

This is where the use of simple mathematics is helpful in our quest to correlate revenue to the articles we write.

Over a period of time of say 6 months, an author of various articles can actually keep a graph of revenue derived from article writing with the “y” axis as Revenue and the “x” axis of the graph as the number of articles written, each time keeping the number of article depositories to which the article was submitted at a constant figure.

In this particular case, say for example if you are marketing these articles to the article depositories such as ezinearticles.com or goarticles.com, your revenue that goes to the “y” axis is the payout derived from Google Adsense for the month by using solely article marketing alone, and the “x” axis will be the number of articles you have submitted.

Over the period of 6 months, you will have sufficient data on the graph for which you can draw a best fit curve or applying the principles of linear regression to form a straight line that goes through most of these points on the graph where the line is represented by the equation y=mx+c

The function of the regressed straight line will indicate that the revenue derived is a function of “m” which is the gradient or slope of the line, and a constant “c”.

The constant “c” is the value where the straight line cuts the “y” axis and this is the particular part which stems from the individual and is a representation of his abilities in writing, his style of writing, his command of the language and factors that only the individual possesses.

By doing a correlation study between the revenue obtained and the number of articles submitted in article marketing, keeping other factors constant as far as possible, it will be possible to gauge the quality of the author’s writing. It will also be possible to form a rough basis to project further revenue to the number of articles planned for submission, ignoring other factors such as keyword selection, onsite and offsite search engine optimisation which are not included in the study, and only on the basis of the individual writing “flair” and abilities as measured by the constant “c”.

While this is by no means exact and is an approximation, keeping statistics and charts like these serves a useful function in helping the marketer to identify sudden trend changes, especially where performance or revenue suddenly falls from the norm ( or the mean ).

He can then study what has led to this deviation from the mean and why. Charting these details will make any change very apparent which may be missed otherwise.

While it is common for an internet marketer to use software scripts to track his earnings from Google Adsense, for example, most scripts do not lend themselves to this particular graphical analysis as explained. It is when the charting is done by hand, albeit in such a simple way, that the internet marketer is sensitive enough and alert to any sudden changes or is able to consider what factor to change in his article writing to derive more revenue.

He can go deeper to ask this question: ” Since the revenue is directly proportional to the slope of the revenue line, what factors will change the slope?”.

Knowing these factors, he can vary them and test out his changes.

By correlating revenue to the number of articles written, the internet marketer has a way to project profitability, no matter how rough. He has on his hands a set of statistics that he can use for further research and analysis, or in marketing terms “testing”.

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