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"As opposed to illiteracy, where you can't read, aliteracy means that you can but you just can't be bothered. They say aliteracy is on the rise these days."
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![]() Marooned on Neptune (the icy part that the planetary engineers had not remade into usable farmland), Bob Star and his companions seem lost. But are they?
How might this amazing device be constructed without a network of GPS satellites? Williamson was probably thinking about using intertial guidance systems to indicate position; I haven't read about anyone who had thought of providing a read-out of path.
The basic idea behind inertial guidance systems is simple. Take a set of gyroscopes and set them in a known direction; if left to float freely, they will continuously indicate true direction. Then, use accelerometers to determine motion. These systems have the advantage of not relying on outside signals (which could be jammed); however, they are prone to cumulative errors.
Gyroscopes have been used to indicate direction on ships since the early 1900's. Rocket scientist Robert Goddard theorized that they would be useful in rocketry. The first successful inertial guidance systems were used in V2 rockets in the mid-1940's by German scientists. Read more about inertial guidance systems. Comment/Join this discussion ( 0 ) | RSS/XML | Blog This | Additional
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Science Fiction
Timeline
'Courier Commons' By Tomorrow Lab, From Karl Schroeder (and Bruce Sterling?)
'The pokkecon rang again. *The coffee’s for him?* Tsuyoshi said.'
Jetson-Style Clockwork Robot Nail Salon Coming To Target Near You
The Jetsons imagined so much future.
Mechanical Horse Sculpture Gallops In Place
'Rod placed the brain inside the panel... the horse raised its head, wiggled its ears, blinked twice, gave a tentative whinny.'
'Make Sunsets' Tweaks Climate By Atmospheric Alteration
'Pina2bo would have to operate full blast for many years to put as much SO2 into the stratosphere as its namesake had done in a few minutes.'
Hotels Turn To Robots As Human Workers Regroup
'Chain of hotels that specialized in non-human service.'
Changesite Mineral To Be Mined On Moon By China
'But then... not every bulldozer operator works on the Moon.'
Tongue-Controlled Tong Wearable Mouth Computer
'Griff found the white and pink map distracting and switched it off using his tongue mouse.'
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