https://wikimd.org/index.php?action=history&feed=atom&title=Cosmic_background_radiation 2026-04-25T06:03:30Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.org/index.php?title=Cosmic_background_radiation&diff=6303635&oldid=prev 2025-02-16T22:12:17Z

<p>CSV import</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:12, 16 February 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l25">Line 25:</td> <td colspan="2" class="diff-lineno">Line 25:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Radiation]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Radiation]]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Cosmology-stub}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Cosmology-stub}}</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;gallery&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">File:Cobe-cosmic-background-radiation.gif|COBE Cosmic Background Radiation</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;/gallery&gt;</ins></div></td></tr> <!-- diff cache key wikimd4:diff:1.41:old-5327977:rev-6303635:php=table --> </table>

Prab https://wikimd.org/index.php?title=Cosmic_background_radiation&diff=5327977&oldid=prev 2024-02-28T23:03:11Z

<p>CSV import</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Cosmic Background Radiation&#039;&#039;&#039; is the residual radiation that fills the observable universe and is a remnant from an early stage of the universe, also known as the [[Big Bang]]. It is isotropic to roughly one part in 100,000 and has a nearly perfect [[Black body|black-body]] spectrum. It has a temperature of 2.72548±0.00057 K. The Cosmic Background Radiation is an important source of data on the early universe because it is the oldest electromagnetic radiation in the universe, dating to the [[Epoch of Recombination|epoch of recombination]].<br /> <br /> == Discovery ==<br /> The Cosmic Background Radiation was first predicted in 1948 by [[Ralph Alpher]] and [[Robert Herman]]. It was first observed inadvertently in 1965 by [[Arno Penzias]] and [[Robert Wilson]] at the [[Bell Telephone Laboratories]] in Murray Hill, New Jersey. The discovery earned them the 1978 [[Nobel Prize in Physics]].<br /> <br /> == Characteristics ==<br /> The Cosmic Background Radiation is almost perfectly uniform and isotropic. It varies by less than 0.003% in all directions. This uniformity is one strong argument for the [[Big Bang theory]], as it is exactly what the theory predicted.<br /> <br /> == Significance ==<br /> The Cosmic Background Radiation is a snapshot of the universe when it was just 380,000 years old. It provides a unique probe of the conditions of the early universe and the physics that governed its evolution.<br /> <br /> == See also ==<br /> * [[Big Bang]]<br /> * [[Cosmic microwave background polarization]]<br /> * [[Cosmic neutrino background]]<br /> * [[Cosmic infrared background]]<br /> * [[Cosmic X-ray background]]<br /> <br /> == References ==<br /> &lt;references /&gt;<br /> <br /> [[Category:Cosmology]]<br /> [[Category:Physical cosmology]]<br /> [[Category:Big Bang]]<br /> [[Category:Radiation]]<br /> {{Cosmology-stub}}</div>

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