Physical Law

Cosma Home > Communication > Knowledge > Realm > Physical > Law

Spotlight


Explore physical laws, principles and effects (Wolfram Alpha)

Related

Pages

Physical Realm
Physical Laws (Constants) Relativity
Matter Molecule, Atom (Periodic Table), Particle
Force Gravity, Electromagnetism (Light, Color)

Resources

These are organized by a classification scheme developed exclusively for Cosma. More…

General

Portal

Physics Fundamentals (Martindale’s Reference Desk)

Dictionary

A Dictionary of Named Effects and Laws in Chemistry, Physics and Mathematics (D. W. Ballentyne & D. R. Lovett)

Encyclopedia

Scientific laws are statements that describe or predict a range of natural phenomena. Each scientific law is a statement based on repeated experimental observations that describes some aspect of the Universe. The term law has diverse usage in many cases (approximate, accurate, broad, or narrow theories) across all fields of natural science (physics, chemistry, biology, geology, astronomy, etc.). Scientific laws summarize and explain a large collection of facts determined by experiment, and are tested based on their ability to predict the results of future experiments. They are developed either from facts or through mathematics, and are strongly supported by empirical evidence. It is generally understood that they reflect causal relationships fundamental to reality, and are discovered rather than invented.

Laws reflect scientific knowledge that experiments have repeatedly verified (and never falsified). Their accuracy does not change when new theories are worked out, but rather the scope of application, since the equation (if any) representing the law does not change. As with other scientific knowledge, they do not have absolute certainty (as mathematical theorems or identities do), and it is always possible for a law to be overturned by future observations. A law can usually be formulated as one or several statements or equations, so that it can be used to predict the outcome of an experiment, given the circumstances of the processes taking place.

Laws differ from hypotheses and postulates, which are proposed during the scientific process before and during validation by experiment and observation. Hypotheses and postulates are not laws since they have not been verified to the same degree and may not be sufficiently general, although they may lead to the formulation of laws. A law is a more solidified and formal statement, distilled from repeated experiment. Laws are narrower in scope than scientific theories, which may contain one or several laws. Science distinguishes a law or theory from facts. Calling a law a fact is ambiguous, an overstatement, or an equivocation. Although the nature of a scientific law is a question in philosophy and although scientific laws describe nature mathematically, scientific laws are practical conclusions reached by the scientific method; they are intended to be neither laden with ontological commitments nor statements of logical absolutes.

According to the unity of science thesis, all scientific laws follow fundamentally from physics. Laws which occur in other sciences ultimately follow from physical laws. Often, from mathematically fundamental viewpoints, universal constants emerge from a scientific law. — Wikipedia

Encyclopædia Britannica

List of scientific laws named after people (Wikipedia)

Introduction


Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

News

Phys.org

Book

ISBNdb

Government

Document

USA.gov

Fun


returntotop

More…

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Scientists capture light in a polymeric...
    on September 25, 2020 at 5:14 pm

    ITMO University scientists have conducted several experiments to investigate polymeric quasicrystals that ultimately confirmed their initial theory. In the future, the use of quasicrystals may open up new possibilities for laser and sensor design. This paper was published in Advanced Optical Materials.

  • Metal wires of carbon complete toolbox for...
    on September 24, 2020 at 6:00 pm

    Transistors based on carbon rather than silicon could potentially boost computers' speed and cut their power consumption more than a thousandfold—think of a mobile phone that holds its charge for months—but the set of tools needed to build working carbon circuits has remained incomplete until now.

  • Young physicist 'squares the numbers' on time...
    on September 24, 2020 at 2:43 pm

    Paradox-free time travel is theoretically possible, according to the mathematical modeling of a prodigious University of Queensland undergraduate student.

  • Scientists develop forecasting technique that...
    on September 23, 2020 at 8:26 pm

    Bringing the power of the sun to Earth requires sound theory, good engineering, and a little finesse. The process entails trapping charged, ultra-hot gas known as plasma so its particles can fuse and release enormous amounts of energy. The most widely used facilities for this process are doughnut-shaped tokamaks that hold plasma in place with strong magnets that are precisely shaped and positioned. But errors in the shaping or placement of these magnets can lead to poor confinement and loss of […]

  • Tiny worlds reveal fundamental drivers of...
    on September 23, 2020 at 4:01 pm

    The natural world is astonishingly complex. After centuries of study, scientists still have much to learn about how all the species in an ecosystem coexist, for example. New research on microbial communities published in Nature Communications helps light the way to answering this fundamental question in ecology.