Reference Terms
from Wikipedia, the free encyclopedia
Mobile phone
A mobile phone or cell phone is an electronic telecommunications device with the same basic capability as a conventional fixed-line telephone, but which is also entirely portable and is not required to be connected with a wire to the telephone network.
Note: The above text is excerpted from the Wikipedia article "Mobile phone", which has been released under the GNU Free Documentation License.
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Matter & Energy News
February 23, 2025
Feb. 21, 2025 — Researchers are blurring the lines between robotics and materials, with a proof-of-concept material-like collective of robots with behaviors inspired by ...
Feb. 19, 2025 — From a tiny electric jolt when touching a doorknob to styrofoam peanuts that cling to a mischievous cat's fur -- the well-known and seemingly simple phenomenon of static electricity has puzzled ...
Feb. 19, 2025 — Scientists have discovered how to turn common minerals into materials that spontaneously remove and store carbon dioxide from the atmosphere. In the lab, the materials pull CO2 from the air thousands of times faster than occurs with natural rock ...
Feb. 13, 2025 — What if time is not as fixed as we thought? Imagine that instead of flowing in one direction -- from past to future -- time could flow forward or backward due to processes taking place at the quantum ...
Latest Headlines
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Feb. 21, 2025 — Researchers have identified the origin of the restoring force that lets elastic crystals return to their original ...
Feb. 21, 2025 — Optical atomic clocks can increase the precision of time and geographic position a thousandfold in our mobile phones, computers, and GPS systems. ...
Feb. 21, 2025 — A research team has developed a groundbreaking method for synthesizing perovskite nanocrystals (PNCs), a next-generation semiconductor material, in a more uniform and efficient manner. This study is ...
Feb. 21, 2025 — Photonics researchers have demonstrated how self-imaging of light, a phenomenon known for nearly two centuries, can be applied to cylindrical systems, facilitating unprecedented control of light's ...
Feb. 21, 2025 — A hybrid microscope allows scientists to simultaneously image the full 3D orientation and position of an ensemble of molecules, such as labeled ...
Feb. 21, 2025 — Agricultural fertilizers are critical for feeding the world's population, restoring soil fertility and sustaining crops. Excessive and inefficient use of those resources can present an environmental ...
Feb. 21, 2025 — Scientists have now mapped the forces acting inside a proton, showing in unprecedented detail how quarks -- the tiny particles within -- respond when hit by high-energy photons. The international ...
Feb. 21, 2025 — Researchers have pioneered a new catalytic transformation that converts epoxides into fluorinated oxetanes, a coveted but difficult-to-make class of drug molecules that escaped synthetic preparation ...
Feb. 21, 2025 — Researchers have investigated how microbubbles tiny gas bubbles can deliver drugs into cells in a targeted manner using ultrasound. For the first time, they have visualized how tiny cyclic microjets ...
Feb. 21, 2025 — Perovskite solar cells are highly efficient and low cost in production. However, they still lack stability over the decades under real weather conditions. An international research collaboration has ...