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Naoufel EL ABBASSI
Worked at Poste Maroc
Attended Knowledge CBI
Lives in Rabat, Rabat-Sale-Zemmour-Zaer, Morocco
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Naoufel EL ABBASSI

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The reason why Involute gears turn smoothly. 

Fig 1) How to draw involute of circle.
Fig 2) Move and rotate the observing point.
Fig 3) The curves are tangent.
Fig 4)  Involute gears turn smoothly.

Practical application of involute curves.
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Winter Reflections ~ Yosemite National Park, #California   
by Mark Coté

Yosemite National Park is a United States National Park spanning eastern portions of Tuolumne, Mariposa and Madera counties in the central eastern portion of the U.S. state of California. The park, which is managed by the National Park Service, covers an area of 747,956 acres (3,026.87 km2) and reaches across the western slopes of the Sierra Nevada mountain chain. Over 3.7 million people visit Yosemite each year most spend their time in the seven square miles (18 km2) of Yosemite Valley. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its spectacular granite cliffs, waterfalls, clear streams, giant sequoia groves, and biological diversity. Almost 95% of the park is designated wilderness. Yosemite was central to the development of the national park idea. First, Galen Clark and others lobbied to protect Yosemite Valley from development, ultimately leading to President Abraham Lincoln's signing the Yosemite Grant in 1864. Later, John Muir led a successful movement to establish a larger national park encompassing not just the valley, but surrounding mountains and forests as well—paving the way for the United States national park system.
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Put a=(1+i θ/N), and take a limit N→∞ then the logarithmic spiral approaches the unit circle. The argument of a is equal to arctan(θ/N). This argument is approximately equal to θ/N in case of N>>1.
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Mathematics
A community for mathematicians, students, and mathematics enthusiasts.
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Freckles are not harmful medically but they can be harmful psychologically. If your freckles do not go away by itself then read about some easy home remedies to get rid of them.
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how pencils get sharpen by factory!!!
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    Master Management Information Systems, 2009 - 2012
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