Search results

...o several notable [[List of conjectures|conjectures]] or [[open problem]]s in various academic fields: * [[List of unsolved problems in astronomy|Unsolved problems in astronomy]] ...

...fundamental problems and [[Paradox|paradoxa]], and the related fundamental problems of philosophy and [[Epistemology|science]]. ...philosopher in the 2nd century B.C., [[Critolaus|Kritolaos]].<ref>As found in [[Stobaeus|Stobaios]], quoting the work by [[Aetius (philosopher)|Aetios]] ...

{{Short description|Background energy existing in space}} ...FOLLOW-UP: What is the 'zero-point energy' (or 'vacuum energy') in quantum physics? Is it really possible that we could harness this energy? – Scientific Amer ...

...the [[Giant Dipole Resonance|giant dipole resonance]] also occurs roughly in this energy range (at 10 EeV/nucleon) and similarly restricts very long-dis ...ys are produced near our galaxy or that [[Lorentz covariance]] is violated in such a way that protons do not lose energy on their way to our galaxy. ...

...ather, the whole theory is encapsulated by the Lorentz-invariant [[Action (physics)|action]] <math>S</math> of [[World line|particle trajectories]] <math> a^\ ...amics in Terms of Direct Interparticle Action |journal=[[Reviews of Modern Physics]] |volume=21 |issue=3 |pages=425–433 |date=July 1949 |doi=10.1103/RevModPhy ...

{{Short description|Theories trying to extend known physics}} '''Physics beyond the Standard Model''' ('''BSM''') refers to the theoretical developm ...

...Dawes M. Clinical information retrieval using document and PICO structure. In: Human Language Technologies: The 2010 Annual Conference of the North Ameri ...ginal question. Literature suggests several methods for selecting criteria in the development of a research question, two of which are the FINER and PICO ...

{{original research|reason=In particular, the classification into "quantity, structure, space and change" ...nd change.<!--Please, do not link "change", as it has no technical meaning in mathematics. --> ...

...Questions in Cosmic-Ray Research at Ultrahigh Energies |journal=Frontiers in Astronomy and Space Sciences |year=2019 |volume=6 |pages=23 |doi=10.3389/fs ...bove {{val|5.7|e=19|u=eV}}, that is, about one such event every four weeks in the 3000&nbsp;km² area surveyed by the observatory.<ref> ...

...0px|Electromagnetic interactions are responsible for the glowing filaments in this [[plasma globe]].]] ...terms of electromagnetic fields. Macroscopic charged objects are described in terms of [[Coulomb's law]] for electricity and [[Ampère's force law]] for m ...

{{Short description|Branch of physics}} {{Condensed matter physics}} ...

...aining why galaxies do not appear to obey the currently understood laws of physics. ...the [[Solar System]] or on Earth.{{Dubious|reason=MOND could be observable in the outer solar system as orbits of KBOs should be influenced by the Galact ...

...energy is known to be smooth because it doesn't accumulate preferentially in galaxies and clusters..."</ref> Dark energy's [[Energy density|density]] is ...entists thought that the gravitational attraction of [[matter]] and energy in the universe would cause the universe's expansion to slow over time. Since ...

...ransform into ordered 3D meshes of crystalline [[nanowire]]s as summarized in the model below.<ref>{{Cite journal | doi= 10.1039/C4TA02202E| title= Templ ...ry]] discusses self-organization in terms of islands of [[predictability]] in a sea of chaotic unpredictability. ...

...een called a [[paradox]] by at least one source and have their own article in this encyclopedia. Although considered paradoxes, some of these are simply ...These paradoxes, often called ''[[antinomy]],'' point out genuine problems in our understanding of the ideas of [[truth]] and [[Definite description|desc ...

...s lead to a kind of reintroduction of an [[Luminiferous aether|aether]] in physics{{sfnp|Sciama|1991|p=137}}{{sfnp|Davies|2011}} since some systems can detect ...the greatest [[List of unsolved problems in physics|unsolved mysteries in physics]]. Many physicists believe that "the vacuum holds the key to a full underst ...

...and intangible ones such as [[software]]. Technology plays a critical role in [[science]], [[engineering]], and [[everyday life]]. ..., and the [[Internet]], have lowered barriers to communication and ushered in the [[knowledge economy]]. ...