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"The way you write science fiction is: you sit down at your writing machine and you open your mind to the first thought that comes through."
- Frederik Pohl

Gravity Lens  
  An optical lens created using the lightbending properties of gravity.  

The classic experiment to demonstrate the lightbending properties of large masses was performed in 1919. And in 1936, Albert Einstein published a further prediction that immense gravitational fields would bend and focus light as an optical lens would.

Finally, you can get the same effect without a solar-sized mass.

"How do you like my telescope?"

Alice said "The whole sky?"

"It's a gravity lens ... You know that a gravity field bends light? Good. I can make a field that warps light into a focus. It's lenticular, shaped like a red blood platelet.

Technovelgy from Protector, by Larry Niven.
Published by Del Rey in 1973
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Additional resources:
  More Ideas and Technology from Protector
  More Ideas and Technology by Larry Niven
  Tech news articles related to Protector
  Tech news articles related to works by Larry Niven

Gravity Lens-related news articles:
  - A First: Planet Found With Gravitational Microlensing

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Science Fiction in the News

AI Operates An Excavator
'So far as I could see, the thing was without a directing Martian at all.'

US Army IBEX Exoskeleton Walks Troops Out Of Danger
'The suit stands up and starts walking, gripping me round the calves and waist, taking the bulk of my weight off my throbbing feet.'

Boy Makes Biomimetic Turtle Robot
't came out into plain view. Darkington glimpsed a slim body and six short legs of articulated dull metal.'

Elon Musk Wants Data Centers In Space
'Internally it’s made up of millions of components, but the most important ones are the thinking and memory parts of the Mind proper.'

Origin F1 Humanoid Robot's Facial Skin
'I could look down at that face of carefully molded synthetic rubber, tinted the exact shade of the doctor's living flesh.'

Grok And The City Fathers From 'Cities In Flight' By James Blish
'Chris, the City Fathers are not interested in your welfare; I suppose you know that. They're interested in only one thing: the survival of the city.'

Why Not Move A Warehouse District?
'Did you never see a moving house before?'

Will An AI Found A New Religion?
'You must decide how you will worship Me.'

Terraformer Industries Make Methane
'Drake was the young spatial engineer he employed to terraform the little rock...'

I Need An Outdoor Spherical Display
'Usually a spherical display hovered in the centre...'

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