Photodetector
A photodetector is a device that detects electromagnetic radiation, such as visible light, ultraviolet radiation, or infrared radiation, and converts it into an electrical signal. In the context of space and astronautical engineering, photodetectors are used in various applications, such as remote sensing, imaging, and communication. Remote sensing satellites use photodetectors to capture images of the Earth's surface, which are then used for various purposes, such as weather forecasting, land use mapping, and disaster management. Imaging systems on spacecraft also use photodetectors to capture images of celestial objects, such as planets, stars, and galaxies. Photodetectors are also used in communication systems, such as laser communication systems, to receive and transmit data. In addition, photodetectors are used in scientific instruments, such as spectrometers, to measure the intensity and wavelength of electromagnetic radiation.
Your Previous Searches
Random Picks
- Gravitational Assists: Gravitational assist, also known as a gravity assist, is a spaceflight maneuver that uses the gravity of a planet or other celestial body to alter the trajectory and speed of a spacecraft. The spacecraft approaches the planet in a way that ... Read More >>
- Electrons: Electrons are subatomic particles that carry a negative electric charge and orbit the nucleus of an atom. In space and astronautical engineering, electrons play a crucial role in the design and operation of electronic devices and systems us ... Read More >>
- New Shepard: New Shepard is a reusable suborbital rocket system designed by Blue Origin for space tourism and scientific research. The rocket is named after Alan Shepard, the first American to enter space. The system consists of a rocket booster and a c ... Read More >>
Top News
This week on "Sunday Morning" (April 20)...
A look at the features for this week's broadcast of the Emmy-winning program, hosted by Jane Pauley....
News Source: CBS News on 2025-04-17
Scientists detect strongest hints yet of life on a distant planet...
Scientists have detected unique chemical patterns similar to those produced by the Earth's algae and seaweed — raising the possibility of the presence of a warm ocean, perhaps teeming with life, on ...
News Source: NBC News on 2025-04-17
Is there life on another planet? Scientists find the strongest evidence yet...
Near a planet far, far away astronomers have found traces of chemicals that on Earth are only produced by living beings....
News Source: Al Jazeera English on 2025-04-17
Scientists find strongest evidence yet of life on an alien planet | CNN...
In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest signs yet of possible life beyond our solar system, detecting in an alien ...
News Source: CNN on 2025-04-17
Katy Perry's trip to space wasn't inspirational. It was tone-deaf marketing....
Katy Perry indulged in a space tourism trip Monday, courtesy of Jeff Bezos' company. It's the latest in a long line of missteps for the singer....
News Source: Business Insider on 2025-04-14