Search results
Results From The WOW.Com Content Network
The following is a list of notable unsolved problems grouped into broad areas of physics. [1] Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
A small group of primary electrons is created by the arrival of a group of initial photons. (In Fig. 1, the number of primary electrons in the initial group is proportional to the energy of the incident high energy gamma ray.) The primary electrons move toward the first dynode because they are accelerated by the electric field.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
Science (Physics, Chemistry) (Singapore) Yes Yes Yes Singapore only; last exam in 2014 syllabus: CIE 5117 Science (Physics, Biology) (Singapore) Yes Yes Yes Singapore only; last exam in 2014 syllabus: CIE 5118 Science (Chemistry, Biology) (Singapore) Yes Yes Yes Singapore only; last exam in 2014 syllabus: CIE 5124 Science (Physics, Chemistry ...
In addition to the two primary forms of content, the PhysicsOverflow community also welcomes discussions on unsolved problems, and hosts a chat section for discussions on topics generally of interest to physicists and students of physics, such as those related to recent events in physics, physics academia, and the publishing process.
The International Physicists' Tournament (IPT) is a physics competition for undergraduate students, bachelors or master level (or equivalent), in which students representing their nation and institution have typically 9 months to solve a set of challenging unsolved physics problems, then present and defend them to other teams. [1]
The change from an A*-G grading system to a 9-1 grading system by English GCSE qualifications has led to a 9-1 grade International General Certificate of Secondary Education being made available. [13] Before, this qualification was graded on an 8-point scale from A* to G with a 9th grade “U” signifying “Ungraded”.
Shear modulus is related to bulk modulus as 3/G = 2B(1 − 2v)(1 + v), where v is the Poisson's ratio, which is typically ~0.1 in covalent materials. If a material contains highly directional bonds, the shear modulus will increase and give a low Poisson ratio. A material is also considered hard if it resists plastic deformation. If a material ...