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
"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
 |
| Lidar | ||
| Radar-like system that uses electromagnetic radiation at optical frequencies (visible light) for range-finding and analysis. |
This is a very cool technology, and one which has real potential for use (and miniaturization).
| If you stared carefully into the fog and focused on a point inches in front of your nose, you could see it sparkling, like so many microscopic searchlights, as the immunocules swept space with lidar beams. Lidar was like radar except that it used the smaller wavelengths that happened to be visible to the human eye. |
| From The Diamond Age,
by Neal Stephenson. Published by Bantam Books in 1995 Additional resources -
|
Lidar stands for Light Detection And Ranging; it is a real technology being explored today. The device sends light out toward a target, which interacts with the target and is changed by it. Some of this light is reflected or scattered back to the lidar device, where it is analyzed. The simplest lidars are range finders (determine the distance to the object). DIAL (Differential Absorption Lidar) is used to measure the concentrations of chemical pollutants in the atmosphere. A DIAL uses two selected laser wavelengths; one is absorbed by the target molecules, the other is not. The difference in the return signals can be used to determine the concentration of the selected molecule in the target sample. Other names for lidar are laser radar, optical radar and ladar. Find more information about lidar at the LIDAR Tutorial, courtesy of our friends at NASA.gov.
Comment/Join this discussion ( 0 ) | RSS/XML | Blog This |
Additional
resources:
More Ideas
and Technology from The Diamond Age
More Ideas
and Technology by Neal Stephenson
Tech news articles related to The Diamond Age
Tech news articles related to works by Neal Stephenson
| Is There A Subterranean Ocean? |
| The Robotic Shopping Cart Of The Future |
| Arctic Resource Jackpot An Old Wish |
| Marie Curie's Papers Still Radioactive |
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 Invention Timeline, or see what's New.
|
'... they placed the brain in a special solution, having all the properties of Nursing the brain cells.'
'... Ancient weapons are no match for a good blaster at your side, kid.'
'Twin robotic arms with gleaming three-foot sword blades unfolded from the forward hydraulic assemblies...'
'He made an adjustment, pointed the tube at the wall beside Etzwane, and projected a cone of light.'
'A metal... light as cork and stronger than steel...'
'Ken lay full-length in the padded body compartment, his feet resting on the controlling bars of the directional planes, hands on the torpoon's engine levers.'
'... little machines, that went from plant to plant... cutting off the ripe fruit.'
'Recharge the batteries... in almost every town and village...'
'...a tiny, rocket-powered projectile, drove towards the mysterious bulk. It hit, exploding into a cloud of incandescent vapour.'
'The flycycles were miracles of compact design.'
