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...fic energy]] over that required to just barely escape from a massive body. The units are [[length]]² [[time]]⁻², i.e. [[velocity]] s ...onstant [[specific orbital energy]] <math>\epsilon</math> equal to the sum of its specific kinetic and specific potential energy: ...

{{Short description|Plaques on the Pioneer 10 and 11 space probes with pictorial messages about humanity}} ...e illustration on the Pioneer plaque|image2=GPN-2000-001621-x.jpg|caption2=The plaque attached to ''[[Pioneer 10]]''}} ...

{{Short description|Overview of and topical guide to physics}} {{see also|Index of physics articles}} ...

{{Short description|State of no net thermal energy flow between two connected systems}} ...closed system.png|thumb|Development of a thermal equilibrium in a [[closed system]] over time through a [[heat flow]] that levels out temperature differences ...

...<dfn>two particles are coupled </dfn>if they are connected by <dfn>one of the four </dfn>[[Fundamental interaction|fundamental forces]]. ...ng (device)|spring]]. If the pendulums are identical, then their equations of motion are given by ...

...pothesized]] or proposed, but that have not been developed yet. An example of hypothetical technology is [[teleportation]]. ...the term they use for "human-level" intelligence in the [[physical symbol system]] hypothesis.</ref> AGI is associated with traits such as [[consciousness]] ...

...rt description|Property that provides scientific evidence for the presence of technology}} [[File:Technosignatures.jpg|thumb|400px|Illustration of various types of technosignatures.]] ...

...escription|A gravitational effect also known as the differential force and the perturbing force}} [[File:Arp 282.png|right|300px|thumb|upright=1.5|Tidal interaction between the [[barred spiral galaxy]] [[NGC 169]] and a smaller companion<ref> ...

...e|−18}}&nbsp;[[metre per second|m/s]] and 3.0{{e|8}}&nbsp;m/s (the [[speed of light]]). Values in bold are exact. ==List of orders of magnitude for speed== ...

...pheric phenomenon causing planetary warming|the general heating or cooling of Earth's surface|Earth's energy budget|other uses|Greenhouse (disambiguation ...planet, but then absorb and redirect some of the longwave radiation (heat) the planet emits.]] ...

{{Short description|Ability of a material to exchange thermal energy with surroundings}} ...r|thumb|Thermal effusivity sensor typically used in the direct measurement of materials.]] ...

{{Short description|Device able to make copies of itself}} [[File:Self-replicating machine.png|300px|thumb|A simple form of machine self-replication]] ...

{{Short description|Work being continuously done without an external input of energy}} ...enter to top-right) to pump water to refill the tank. The rotary motion of the water wheel also drives two grinding wheels (bottom-right) and is shown as ...

{{Short description|1=Overview of and topical guide to technology}} part of the set of 830+ outlines listed at ...

{{short description|Concept of collecting solar power in outer space and distributing it to Earth}} {{see also|Solar panels on spacecraft}} ...

...readers without specialized technical education, but who want to know what the term emissivity means in contexts such as "low-e" coatings for windows.--> {{short description|Capacity of an object to radiate electromagnetic energy}} ...

{{short description|Hypothesis proposing a modification of Newton's laws}} ...xplaining why galaxies do not appear to obey the currently understood laws of physics. ...

{{Short description|Amount of matter present in an object}} {{about|the scientific concept|the main liturgical service in some Christian churches|Mass (liturgy)|other use ...

[[File:VFPt charges plus minus thumb.svg|220px|thumb|right|Illustration of the electric field surrounding a positive (red) and a negative (blue) charge.]] ...}}</ref><ref name=Feynman204>{{cite book |author=Richard P. Feynman |title=The Feynman Lectures on Physics Vol II |publisher=Addison Wesley Longman |year= ...

...ung Bromo - Indonesia.jpg|upright=1.3|thumb|A timelapse composite panorama of different natural phenomena and environments around [[Mount Bromo]], Indone ...mena]] of the physical world, including [[life]]. Although humans are part of nature, human activity or humans as a whole are often described as at times ...