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A directive is an instruction or guideline that indicates how to perform an action or reach a goal.
A directive is also an authoritative decision from an official body, which may or may not have binding force.
In European Union Law a directive is a form of legislative act addressed to the Member States. The directive binds the Member State to reach certain objectives in their national legislation.
A UC Berkeley engineer, entranced by the uncanny ability of insects like dragonflies and bumblebees to peer in all directions at once, has for the first time created microscopic versions of their compound eyes in the laboratory.
Luke Lee, professor of bioengineering and leader of a research team he calls the Bio-Poets, is reporting today that his synthetic devices made of complex plastic materials can "see" in all directions simultaneously, and could well find uses in fields as varied as medicine, 3-D cameras and even espionage.
The bulbous compound eyes of many insects contain thousands of individual lenses, each of which sees in a single direction, but whose images are melded into a single, wide-angle view that allows the insect to survey its entire neighborhood at once.
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