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Penrose Tribar
Penrose Tribar

Rafał Pocztarski[edit]

Administrator of the English Wikipedia since 2004 (original nomination)

My Contributions: All · Articles · Talk · User talk · Wiki · Wiki talk · Page Deletions · Current rights




Quick links[edit]

Shortcuts[edit]

Rules[edit]

Simplified ruleset: WP:SIMPLE · Policies and guidelines: WP:PG WP:POLICY WP:GUIDELINE · Five pillars: WP:FIVE WP:5P WP:FIVEPILLARS

Neutral point of view: WP:NPOV WP:NPV · Verifiability: WP:V WP:VERIFY WP:SOURCE · No original research: WP:OR WP:NOR WP:ORIGINAL

What Wikipedia is not: WP:! WP:NOT WP:WWIN

Sources[edit]

Primary, secondary and tertiary sources: WP:PSTS WP:PRIMARY WP:SECONDARY Third-party sources: WP:THIRDPARTY WP:3PARTY WP:INDEPENDENT

Identifying reliable sources: WP:IRS WP:RS WP:RELY WP:RELIABLE WP:RELIABLESOURCES · Wikipedia:Notability: WP:N WP:NN WP:NOTE

Abuse[edit]

Vandalism: WP:VAN WP:VAND WP:VNDL WP:VANDAL · Warning templates · Administrator intervention against vandalism: WP:AIV WP:AIAV WP:RVAN

Abuse response: WP:ABUSE WP:AbRep · Cleaning up vandalism: WP:CUV · WikiProject Vandalism studies: WP:WPVS

Requests for page protection: WP:RFPP WP:RFP WP:RPP WP:PADLOCK · Protection policy: WP:PP WP:PROTECT

Misc[edit]

Special:WhatLinksHere

Picture of the day[edit]

Featured pictures · visible · candidates

Oblique shock
An oblique shock is a shock wave that, unlike a normal shock, is inclined with respect to the direction of incoming air. It occurs when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses. This photograph shows an oblique shock at the nose of a Northrop T-38 Talon aircraft, made visible through Schlieren photography.Photograph credit: NASA & US Air Force (J.T. Heineck, Ed Schairer, Maj. Jonathan Orso, Maj. Jeremy Vanderhal)

Selected anniversaries[edit]

June 10: Dragon Boat Festival in China and Taiwan (2024)

John Diefenbaker
John Diefenbaker
More anniversaries:

In the news[edit]

Current events:

Narendra Modi
Narendra Modi

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