IR arrays in space and on the ground
Article Abstract:
Astronomy facilities and equipment such as the Space Infrared Telescope Facility and the Near Infrared Camera and Multi-Object Spectrometer rely on infrared (IR) arrays. These are microelectric devices with individual detectors responsive to faint sources of radiation. IR arrays consist of an upper layer detecting IR radiation and storing photoelectrons and a bottom layer transforming the electrons into quantifiable electrical signals. Beneath the upper layer is an array of sensors. The IR detector is encased in either a camera or a spectrometer and integrated into an optical telescope.
Publication Name: Mosaic (Washington)
Subject: Science and technology
ISSN: 0027-1284
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
A simpler ride into space
Article Abstract:
The linear aerospike rocket engine configuration is considered to be the promising technology in the development of the single-stage-to-orbit launch vehicle. The engine configuration allows for the effective use of rocket thrust, without the accompanying dangers of gas overexpansion/underexpansion as evident in nozzle thrusters.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
How Does the Ground Shake?
Article Abstract:
Predicting earthquake ground motions in a geological area with high-seismic risk is important in developing structures that resist earthquake damage. Predictions require detailed information about the source of the motion caused by the slip between opposite fault sides during the rupture process of the earthquake.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Send in the drones. Kit planes take off. Rocket planes
- Abstracts: Faster ships for the future. Does infinity come in different sizes? The shape of ships to come
- Abstracts: When the sand comes. Tigers, temples and the Taj Mahal. China's ancestral temples
- Abstracts: Conquering the cold. Warming up to cold calling. Blowing hot and cold
- Abstracts: Beam it down: how the new satellites can power the world. High hopes for low satellites. Thermophotovoltaics