These are organized by a classification scheme developed exclusively for Cosma. More…
force : any of the natural influences (as electromagnetism, gravity, the strong force, and the weak force) that exist especially between particles and determine the structure of the universe — Webster
Forces in the universe are based on four fundamental interactions. The strong and weak forces are nuclear forces that act only at very short distances, and are responsible for the interactions between subatomic particles, including nucleons and compound nuclei. The electromagnetic force acts between electric charges, and the gravitational force acts between masses. All other forces in nature derive from these four fundamental interactions. For example, friction is a manifestation of the electromagnetic force acting between the atoms of two surfaces, and the Pauli exclusion principle, which does not permit atoms to pass through each other. Similarly, the forces in springs, modeled by Hooke’s law, are the result of electromagnetic forces and the Exclusion Principle acting together to return an object to its equilibrium position. Centrifugal forces are acceleration forces that arise simply from the acceleration of rotating frames of reference — Wikipedia
Physics News -- ScienceDaily Physics News and Research. Why is the universe more partial to matter than antimatter? How could fuel cells be more efficient? Read current science articles on physics.
World's first continuous room-temperature...
on March 21, 2018 at 6:13 pm
The breakthrough means masers -- the microwave version of lasers -- could now be used more widely in a range of applications. […]
Improving fabrication process of nano-structures...
on March 20, 2018 at 8:37 pm
Researchers have found a more efficient fabricating process to produce semiconductors used in today's electronic devices. They also confirmed that materials other than silicon can be used successfully in the development process that could increase performance of electronic devices. […]
Researchers create microlaser that flies along...
on March 20, 2018 at 4:35 pm
For the first time, researchers have optically trapped and propelled a particle-based laser for centimeters inside an optical fiber. […]
A new kind of quantum bits in two dimensions
on March 19, 2018 at 4:42 pm
Two novel materials, each composed of a single atomic layer and the tip of a scanning tunneling microscope - these are the ingredients to create a novel kind of a so-called 'quantum dot'. These extremely small nanostructures allow delicate control of individual electrons by fine-tuning their energy levels directly. Such devices are key for modern quantum technologies. […]
A future colorfully lit by mystifying physics of...
on March 19, 2018 at 4:42 pm
It defies conventional wisdom about semiconductors. It's baffling that it even works. It eludes physics models that try to explain it. This newly tested class of light-emitting semiconductors is so easy to produce from solution that it could be painted onto surfaces to light up our future in myriad colors shining from affordable lasers, LEDs, and even window glass. […]