Topic search for physics - Topodia makes research easy.

system , potential energy , kinetic energy , energy , energy star

In general, the concept of energy refers to the potential for causing changes. In physics, energy is the ability to do work and has many different forms (potential, kinetic, electromagnetic, etc.) No matter what its form, physical energy has the same units as work; a force applied through a distance. The SI unit of energy, the joule, equals one newton applied through one meter.
Topics for this category include energy resources, energy utilization technologies, technology research and technical innovations, and analytical aspects of energy policy.

Materials

materials , jmatpro , material connexion , stainless steels , general steels

Material science is concerned with understanding the properties of materials and how to create new ones.

Fluid Mechanics and Dynamics

salients , fluid salients , fluid flows , salient formation , beach face

A collection of scientific resources about the motion of fluids like liquids and gases.

Physics

physics , science , extra dimensions , loop quantum gravity , user comments

"Physics is the study and application of the fundamental laws of nature, including the laws of motion, gravity, electromagnetism, heat, and microscopic interactions. These laws govern the behavior of objects at all scales, from the smallest subatomic particles to the entire observable universe. In between, physicists study nuclear reactions, the interactions of atoms with light, properties of solids, chaotic dynamics of fluids, and the evolution of stars and galaxies, among many other applications."

If this doesn't tickle your fancy, there is always the quote from Rutherford: "In science, there is only physics; all the rest is stamp collecting."

Anomalies and Alternative Science

science , correlation function , superstitions , planetary fluctuations , diagonal method

Science is constantly reshaping itself through unexpected observations, new ideas, and revisions to old theories. While terms like "anomalies" or "alternative" may seem pejorative from an orthodox perspective, from an historical view these are the topics are the very life-blood of science. We must have heretics and revolutionaries challenging our beliefs, and advancing the state of the believable, otherwise science will stagnate into dogma.

Acoustics, Ultrasound and Vibration

fourier transform , frequency , basilar membrane , inner ear , sound waves

Nanotechnology

nanotechnology , jim lewis , university , researchers , development

Nanotechnology: a general term covering nanoscale science and engineering. A more narrow definition is miniaturization engineering at the nanometer scale. Nano is a metric prefix meaning 'billionth', in this case, science, technology, and engineering at sizes measured in billionths of a meter, which is 1,000 times smaller than a micrometer. It is proposed to build electronic and mechanical devices which are made of very tiny parts (as are biotic systems), but which may have very large effects (as do biotic systems).

Quantum Computing

photon , alice , quantum information , quantum , photons

Science

computer , science , computers , improbable research , solar cells

Sites in this category contain jokes, essays, songs, students' test answers and other humorous content pertaining to science, math, engineering and statistics.

Educational Resources

osgood file , science , america radio reports , scientists , full story

Science educational resources are educational products and services for teachers and students in the general field of science or cover more than one specialty in science. Some examples of webpages to be listed here include science workbooks, class activities, lesson plans, and mentoring programs.

SETI

seti , extraterrestrial intelligence , extra-terrestrial intelligence , intelligent life , keeney astroresearch

The Search for Extraterrestrial Intelligence. Institutes and programs for scientific and educational projects relevant to the nature, distribution, and prevalence of life in the universe.

Education

astronomy , project , solar system , planets , lesson

Science/Astronomy/Education is for educational web sites of interest to educators, parents, students, and professionals emphasizing the teaching or learning of various aspects of astronomy or astrophysics. The best sites will try to teach or instruct about astronomy or astrophysics, although clear, easy-to-follow explanations of topics are useful as well. There are also sites here that talk about educational programs of all levels, including - but not limited to, grade school, college programs, and graduate schools.

Chemical Engineering

chemical engineers , chemical engineer , chemical engineering , synthetic fibers , chemistry

Semiconductors

user comments , electronic parts , semiconductor hall , electronic components , semiconductor materials

This category is for sites specifically related to the technology of semiconductor electronics as a science. Submissions of sites dealing with manufacturing and production should be made to the appropriate subcategory elsewhere in the directory.

Chaos

chaos theory , initial conditions , l-systems , systems , dynamical systems

Chaos theory, in mathematics and physics, deals with the behavior of certain nonlinear dynamical systems that (under certain conditions) exhibit the phenomenon known as chaos, most famously characterised by sensitivity to initial conditions. Systems that exhibit mathematical chaos are deterministic and thus orderly in some sense; this technical use of the word chaos is at odds with common parlance, which suggests complete disorder.

Knot Theory

crossings , dna , knots , borromean rings , fishing knots

Knots, braids, tangles: papers, software and pictures.

Quaternary Studies

rutgers , greenland , glaciers , bit image , quaternary studies

Particle

cern , particle physics , physics , detector , fermilab

Particle physics, often called High Energy Physics (HEP) deals with the smallest building blocks of everything around us - subatomic elementary particles.

It is not about particles you could see under a microscope (e.g. dust particles) and it is not about chemical molecules.

The World Wide Web was invented by particle physicists at CERN.

Relativity

general relativity , relativity , einstein , general theory , black holes

Classical mechanics generalized (extended) to realm of high velocities (special relativity), and strong gravitational fields (general relativity). In particular, the theory that time and space form a single 'spacetime' which is curved in the presence of energy and mass.

NASA

nasa , solar system , system , ads , technology

Sites belonging to NASA or sponsored by NASA. If a site is not directly NASA initiated or sponsored by NASA it belongs in another category.

Remote Sensing

ivics , sea level , international journal , remote sensing , cold water

Remote sensing is the gathering of information about an object without being in physical contact with the object, usually by methods that detect electromagnetic energy. Such observations are often made from spacecraft and aircraft.

Science

science , scientific revolution , electrical machine , full text , internet archive

Covers the development of science within a regional, topical, social or political context. Many scientific discoveries were influenced or hindered by the political and cultural climate of the times.

Time Travel

time machine , time travel , einstein , mallett , dial

In this category you can find everything on the possibilities of time travel (illusion or reality?) in the framework of Einstein's theory of relativity.

Research Centers

university , astronomy , department , research , astrophysics

This category lists sites especially for institutional astronomical research centers.

Associations

science , international symposium , shellfish tissue , extensive links , surface science

Biomedical Engineering

biomedical engineering , development , university , optical microscopy , research

This site is devoted to Biomedical Engineering, either in the electrical and mechanical engineering field. Submit your site too!!!

Cryotechnology

full story , thermal equilibrium , freezing point , thermometer , temperature

This category includes all aspects of Cryogenics: the production and study of extreme sub-zero temperatures. This includes the production, use, and storage of liquid gases (nitrogen, oxygen, helium), mechanical freezers for those temperatures, and the attempts to reach absolute zero. It also includes a recent use of cryogenic technology in which metals are dipped in liquid nitrogen to improve various qualities.

Absolute Zero

nobel prize , physics , atoms , nist , bell labs

Academic Departments

physics , mathematics , faculty , computer science , computer science branches

Information Theory

information theory , system , linear complexity , sequence , algorithm

Encyclopedia Britannica's says that "the chief concern of information theory is to discover mathematical laws governing systems designed to communicate or manipulate information. It sets up quantitative measures of information and of the capacity of various systems to transmit, store, and otherwise process information. Some of the problems treated are related to finding the best methods of using various available communication systems and the best methods for separating the wanted information, or signal, from the extraneous information, or noise". The study of information theory is also concerned with the definition of notion of information in a general sense and with a unified information theory that is supposed to contain all the statements of existing information theories.

Quantum Mechanics

quantum mechanics , particle , quantum theory , system , photon

The physics which describes subatomic systems and interactions of elementary particles.

Directories

computer science , workshop , resource , software , computer architecture

Theoretical Biology

theoretical biology , phd student , theoretical biologist , biology , theoretical biologists

Theoretical biology has the goal of explaining the biological world by formulating theories. Mathematical biology is closely related.

Lasers

sam , laser faq , lasers , laser , laser faq table

Research about lasers and involving lasers.

Neutron Stars

neutron star , neutron stars , pulsar , pulsars , neutron

Interstellar Medium

solar system , home page , interstellar medium , planets , local interstellar cloud

Observatories

observatory , astronomy , telescope , university , telescopes

This category lists sites especially for astronomical observatories of institutions.

Statistical Mechanics

statistical mechanics , system , medium , particle , equation

Statistical mechanics is the application of statistics to the field of mechanics. It relates the microscopic properties of individual atoms and molecules to the macroscopic or bulk properties of materials, hence explaining thermodynamics as a natural result of statistics and (classical or quantum) mechanics. It can, for example, predict the thermodynamic properties of bulk materials from the spectroscopic data of individual molecules.

Australia

centre , research , marine science , australia , great barrier reef marine park authority

Classical Mechanics

classical mechanics , newton , particle , orbit , velocity

Non-quantum and non-relativistic physics. Study of motion of "bodies" - physical objects. Concepts involved: force, velocity, acceleration, etc.

Petrology and Mineralogy

ejm , experimental mineralogy , journal , authors , magmatic systems

Radiometric Dating

radiometric dating , atoms , igneous rocks , samples , isotopes

Neutrino

neutrinos , neutrino , university , frederick reines , particle physics

Neutrinos are some of the most dificult to observe elementary particles. They interact only weakly. Most of them escape without detection, only a tiny fraction of them can be seen. There are three kinds of neutrinos: electron neutrino, muon neutrino and tau neutrino. Neutrinos can oscillate i.e. they can change their identity in flight and transform from one kind of neutrino into another kind of neutrino. Sources of observed neutrinos include: nuclear reactors, accelerator beams, radioactive sources, secondary particles created by interaction of cosmic rays in the atmosphere, Sun, supernovae. Other possible soruces are: dark matter, gamma ray bursts, active galactic nuclei, relic neutrinos, Earth interior.

Black Holes

black holes , black hole , event horizon , general relativity , gravity

This category is dedicated to sites about black holes - ultra-compact astronomical objects that are predicted by Einstein's theory of general relativity, whose gravity is so strong that not even light can escape.

Computer Graphics

computer graphics , computer science , university , interval computations , scientific visualization

Benford's Law

benford , first digit , zipf , law , distribution

Benford's Law is related to statistics and may also be called "The first Digit Law" . It states that the first digits of a natural set of numbers follow a certain trend, example; The "% frequency" of number "1" as the first digit or leding digit is "%30.10" ; number "2" is "%17,61"....etc.

Bayesian Analysis

current month , mastery state , probability theory , examinee , brad carlin

Functional Analysis

university , functional analysis , operator algebras , germany , operator

Topological and normed linear spaces and algebraic structures. Banach and operator algebras.

United States

planetarium , solar system , private bookings , mars , planets

Semiconductors

electrons , spintronic devices , physical properties , quantum world , electronics

Physics of semiconductors.

Americium

americium , smoke detectors , periodic table , neutrons , molar mass calculations

Fermium

fermium , isotope , chemical properties , periodic table , half-life

Nobelium

nobelium , half-life , nobel institute , protons , periodic table

Dubnium

dubnium , nuclear research , joint institute , scientists , atoms

Lagrangian and Hamiltonian Mechanics

least action , maupertuis , system , principle , quantum mechanics

This is a reformulation of Newton's Laws of Motion, developed by W. R. Hamilton and J. L. Lagrange, using Hamilton's principle of least action and then further analysing the resultant formulae using methods in calculus of variations .

Geometric Algebra

nbsp , clifford , geometric algebra , homogeneous coordinates , cliffordlib

Sometimes known as Clifford Algebra, a powerful mathematical language for expressing physical ideas, unifying diverse mathematical formalisms and aids physical intuition.