Alex Birkett

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Hydrogen line

For hydrogen lines in general, see Hydrogen spectral series.<p>The <b>hydrogen line</b>, <b>21-centimeter line</b> or <b>H I line</b>[1] refers to the electromagnetic radiation …

Dirigisme

<b>Dirigisme</b> or <b>dirigism</b> (from French <i>diriger</i>, meaning 'to direct') is an economic system where the state exerts a strong directive influence over …

Stromatolite

<b>Stromatolites</b> (/stroʊˈmætəlaɪts, strə-/[1][2]) or <b>stromatoliths</b> (from Greek στρῶμα <i>strōma</i> "layer, stratum" (GEN στρώματος <i>strōmatos</i>), and λίθος <i>lithos</i> …

International Velvet - Catatonia

Overton window

This article is about the political concept. For the 2010 novel, see The Overton Window.<p>The <b>Overton window</b>, also known as the <b>window of discourse</b>, is …

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