The flow of electrical current can induce the migration of
impurities or other defects through
the bulk of a solid. This process is called electro
migration. In simple electro migration, the
force on the defect is thought to have two components. The
first component is the force
created by direct interaction between the effective charge
of the defect and the electric field
that drives the current. The second component, called the
"wind force," is the force caused
by the scattering of electrons at the defect.
--J.A. Stroscio and D.M. Eigler, "Atomic and Molecular
Manipulation with the Scanning
What is accuracy and why is it important?
What is document Accuracy and why is it important?
What is technical accuracy and why is it important?
What is Clarity and why is it important?
What is Structural Clarity and why is it important ?
How can you promote structural clarity?
What is meant by Stylistic Clarity and why is it important?
What is meant by Contextual Clarity ?
• What prompts you to write?
•• What is your purpose?
•• Whose work precede has influenced yours?
•• What is the organizational and intellectual context of
You answer those questions in introductions and problem
statements and in your citations
and other references.
What is ‘Conciseness’ and why is it important ?
How do you make your document more concise?
What is coherence and why is it important?
Have your blood cholesterol measured if you've never had it
done. Finger-prick tests at
health fairs and other public places are generally fairly
accurate, especially if they're offered
by a hospital or other reputable health group. When you know
your"number," follow these
guidelines from the National Cholesterol Education Program:
·If your cholesterol is under 200 mg/dl, maintain a healthy
lifestyle--including eating a low-fat
diet, getting regular exercise, maintaining a health body
weight, and not smoking--and get
another test within five years.
Vitamins and minerals can be added to enrich (replace
nutrients lost in processing) or fortify
(add nutrients not normally present) foods to improve their
nutritional quality. Bread sand
cereals are usually enriched with some B vitamins and iron.
Common examples of
fortification include the addition of vitamin D to milk,
vitamin A to margarine, vitamin C to fruit
drinks, calcium to orange juice, and iodide to table salt.
--P. Insel and W. Roth,
For a number
of critical performance characteristics, fiber-optic cable
offers considerable advantages over
standard coaxial cables. The most obvious distinction
between the two is the great
bandwidth-distance capacity of fibers. The high-frequency
capacity of coaxial cables
decreases rapidly with increased length, but the bandwidth
of a commercial fiber-optic
system will remain constant with length. A commercial
fiber-optic system like that of Artel,
remains constant for a bandwidth over a distance of 4,000
ft, while three different sizes of
coaxial cable rapidly drop in less than half the distance.
--Artel Communications Corporation, "Fiber Optics in RGB
Color Computer Graphics
Communications," Application Note CG-1