Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
"I think crypto will slowly percolate its way up and people will adopt it gradually as user friendly, cheap products, become available."
- Neal Stephenson
 |
| Slow Glass (Scenedow) | ||
| A window made of Bose-Einstein Condensate that slows light to a snail's pace. |
A man and his wife go looking for a good deal on a woodlands "scenedow" for their apartment.
| The most important effect, in the eyes of the average individual, was that light took a long time to pass through a sheet of slow glass. A new piece was always jet black because nothing had yet come through, but one could stand the glass beside, say, a woodland lake until the scene emerged, perhaps a year later. If the glass was then removed and installed in a dismal city flat, the flat would—for that year—appear to overlook the woodland lake. |
| From Light of Other Days,
by Bob Shaw. Published by Analog in 1968 Additional resources -
|
A piece of exposed slow glass was called a "scenedow:"
Bose-Einstein condensates are created when atoms are cooled to absolute zero; the atoms collapse into the lowest quantum state, producing a superfluid. Satyendra Nath Bose and Albert Einstein worked out the details in the 1920's. The unusual optical properties of BECs were predicted at that time.
Bose-Einstein condensates have optical densities such that the speed of light passing through the mass is extremely low - walking speed as opposed to its usual 186,000 miles per second.
This idea was used prior to Shaw's story; see the slow glass rod from The Exhalted, a 1940 short story by L. Sprague de Camp.
If you're interested in making light do tricks, check out NYC Heliostats and Star Wars Orbital Mirrors.
See the "Slow Glass-related news items" below for real-world applications.
Compare to glassite from Brigands of the Moon (1930) by Ray Cummings,
artificial transparent element from Last and First Men (1930) by Olaf Stapledon,
neo-crystal from Master of the Asteroid (1932) by Clark Ashton Smith,
transparent car roof from Sinister Barrier (1939) by Eric Frank Russell,
plani glass from Crystalized Thought (1937) by Nat Schachner and
thermalite from Planet of Eternal Night (1939) by John W. Campbell.
Apart from its stupendous novelty value, the commercial success of slow glass was founded on the fact that having a scenedow was the exact emotional equivalent of owning land. The meanest cave dweller could look out on misty parks—and who was to say they weren't his? A man who really owns tailored gardens and estates doesn't spend his time proving his ownership by crawling on his ground, feeling, smelling, tasting it. All he receives from the land are light patterns, and with scenedows those patterns could be taken into coal mines, submarines, prison cells.
This story anticipates the successful creation of Bose-Einstein condensates in 1995. A dilute vapor consisting of approximately 2000 rubidium-87 atoms was cooled to one twenty-billionth Kelvin (not degrees Kelvin - see minor note comments).
Comment/Join this discussion ( 7 ) | RSS/XML | Blog This |
Additional
resources:
More Ideas
and Technology from Light of Other Days
More Ideas
and Technology by Bob Shaw
Tech news articles related to Light of Other Days
Tech news articles related to works by Bob Shaw
Slow Glass (Scenedow)-related
news articles:
- Light Captured In A Crystal
- Slow Light 'Scenedow' Close At Hand
- eBayaday Sells A View On eBay
| Tiny Mining - Extract Precious Industrial Minerals From Your Own Body |
| Polyaramide Is Stronger Than Steel, Light As Plastic |
| Trinitite, Pentagrams And Isaac Asimov |
| RUSSE Self-Healing Plastic Works Underwater |
Want to Contribute an
Item?
It's easy:
Get the name of the item, a
quote, the book's name and the author's name, and Add
it here.
| <Previous | Next> |
|
|
|
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Science Fiction Invention Timeline, or see what's New.
|
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
'... the two pairs of waldoes in the screen followed in exact, simultaneous parallelism.'
'THE SPACE VESSEL was traveling swiftly… For over five thousand years they had Voyaged on and on.’
'They circled the vast audiences, dancing, twittering, chirping...'
'The sun-quilt was a patchwork of colors and materials on the inward side, but silvered on the outward side...'
'Jim, I saw them reduce four of my doctors and nurses into those little cubes!'
'Fats Jordan was hanging in the center of the Big Glass Balloon, hugging his guitar to his massive black belly above his purple shorts..'
'When confronted by hills, or rough terrain, it did not stop, but simply slowed until the task demanded equaled its steady power output.'
'... the brain is no longer subjected to the accustomed pull, and it expands slightly in all directions.'
