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"In WWII, they had a saying that there are no atheists in foxholes. I think the modern equivalent of that is that there are no jaded, bored people in the high-tech industry, in the land of really good hardcore geeks."
- Neal Stephenson

Sunlight Blocker  
  A roughly circular field which denies sunlight to an area of a planet.  

Arthur C. Clarke used this idea in his Childhood's End when it became necessary for the Overlords to discipline an entire country:

There had also been some passive resistance to the policy of the Overlords. Usually, Karellen had been able to deal with it by letting those concerned have their own way, until they had discovered that they were only hurting themselves by their refusal to co-operate. Only once had he taken any direct action against a recalcitrant government.

For more than a hundred years, the Republic of South Africa had been the centre of social strife... When it became clear that no attempt would be made to end discrimination, Karellen gave his warning. It merely named a date and time-no more. There was apprehension, but little fear or panic, for no-one believed that the Overlords would take any violent or destructive action which would involve innocent and guilty alike.

Nor did they. All that happened was that as the sun passed the meridian at Cape Town-it went out. There remained visible merely a pale, purple ghost, giving no heat or light. Somehow, out in space, the light of the sun had been polarized by two crossed fields so that no radiation could pass. The area affected was five hundred kilometres across, and perfectly circular.

The demonstration lasted thirty minutes. It was sufficient: the next day the Government of South Africa announced that full civil rights would be restored to the white minority.

Technovelgy from Childhood's End, by Arthur C. Clarke.
Published by Not Known in 1953
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Additional resources:
  More Ideas and Technology from Childhood's End
  More Ideas and Technology by Arthur C. Clarke
  Tech news articles related to Childhood's End
  Tech news articles related to works by Arthur C. Clarke

Sunlight Blocker-related news articles:
  - Reduce Global Warming By Blocking Sunlight
  - Adjust Earth Temp With A Bazillion Solar Sunshades
  - Gigantic Space Sunshade Would Fight Global Warming
  - Splendid View Of Eclipse From Orbit Visualized And Repurposed By Arthur C. Clarke

Articles related to Space Tech
ESA To Build Moon Bases Brick By Printed LEGO Brick
FLOAT Levitating Train On The Moon ala Clarke
SpaceX Intros Extravehicular Activity Suit
SpaceX Wants A Moonbase Alpha

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