When monitoring the health of mammal populations, scientists often use camera traps to observe the animals in their habitats. But weasels are so sneaky they're rarely caught on camera—leaving scientists with questions about ...
Plants & Animals
Mar 29, 2025
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105
For decades, quantum imaging has promised sharper images and greater light sensitivity than classical methods by exploiting the unique properties of quantum light, such as photon entanglement. But the approaches to do so ...
Optics & Photonics
Mar 28, 2025
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34
Say hello to one of the Milky Way's neighbors! This NASA/ESA Hubble Space Telescope image features a scene from one of the closest galaxies to the Milky Way, the Small Magellanic Cloud (SMC). The SMC is a dwarf galaxy located ...
Astronomy
Mar 25, 2025
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38
The U.S. Naval Research Laboratory's (NRL) Narrow Field Imager (NFI) was launched into space aboard a SpaceX Falcon 9 rocket as a part of NASA's Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission on March 11 ...
Space Exploration
Mar 21, 2025
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0
This NASA/ESA Hubble Space Telescope image features a sparkling spiral galaxy paired with a prominent star, both in the constellation Virgo. While the galaxy and the star appear to be close to one another, even overlapping, ...
Astronomy
Mar 20, 2025
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43
Welfare measurement is among the most fundamental questions in economics. Policymakers and others use gross domestic product (GDP) as a proxy for welfare, but this application does not reflect the benefits of introducing ...
Economics & Business
Mar 20, 2025
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1
In a fun experiment, Max Koch, a researcher at the University of Göttingen in Germany—who also happens to be passionate about homebrewing—decided to use a high-speed camera to capture what occurs while opening a swing-top ...
General Physics
Mar 18, 2025
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119
Adjacent to the University of Rhode Island's main campus, North Woods encompasses 225 acres of forest, wetlands, and headwater streams. Thanks to camera trapping efforts from the Department of Natural Resources Science, images ...
Ecology
Mar 17, 2025
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0
Researchers at the University of Adelaide have performed the first imaging of embryos using cameras designed for quantum measurements.
Optics & Photonics
Mar 13, 2025
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120
In a scene toward the end of the 2006 film, "X-Men: The Last Stand," a character claps and sends a shock wave that knocks out an opposing army. Sunny Jung, professor of biological and environmental engineering in the College ...
General Physics
Mar 11, 2025
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7
A camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura (Latin for "dark chamber"), an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the camera's opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.
A typical still camera takes one photo each time the user presses the shutter button. A typical movie camera continuously takes 24 film frames per second as long as the user holds down the shutter button.
This text uses material from Wikipedia, licensed under CC BY-SA