Just
when you think scientists know everything about human anatomy they go
and find a new body part. The new part, dubbed "Dua's layer," has the
ophthalmology community abuzz with excitement. It's a a micro-thin
structure found behind the cornea. Apparently, the feature has been
lurking there since the beginning of time but since it's only 15 microns
thick (there are more than 25,000 microns in an inch), nobody had ever
spotted it. The discovery is hoped to make eye operations safer and may
have implications for keratoconus, a degenerative eye disorder that
causes the cornea to take on a cone shape It was discovered by Dr Harmindar Dua.. So Yeah.. Indians did it again.. :D
Distributed Flight Array
We’ve all heard the expression: “The whole is greater than the sum of its parts.” Alone, these vehicles can drive about on the ground, but it is not until they assemble that they are able to fly.
The Distributed Flight Array is a flying platform
consisting of multiple autonomous single propeller vehicles that are
able to drive, dock with their peers, and fly in a coordinated fashion.
Once in flight the array hovers for a few minutes, then falls back to
the ground, only to repeat the cycle again.
Distributed Estimation and Control
The individual vehicles of the Distributed Flight Array
have fixed propellers that can lift them into the air, but the resulting
flight is erratic and uncontrolled. Joined together, however, these
relatively simple modules evolve into a sophisticated multi-propeller
system capable of coordinated flight. The task of keeping the array in
level flight is distributed across the network of vehicles. Vehicles
exchange information and combine this information with their own sensor
measurements to determine how much thrust is needed for the array to
take-off and maintain level flight. If the array’s leveled flight is
disturbed, each vehicle individually determines the amount of thrust
required to correct for the disturbance based on its position in the
array and the array’s motion.
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