<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="https://www.designingbuildings.co.uk/skins/common/feed.css?301"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
		<id>https://www.designingbuildings.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Specularum</id>
		<title>Specularum - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.designingbuildings.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Specularum"/>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;action=history"/>
		<updated>2026-04-19T08:53:52Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.17.4</generator>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248863&amp;oldid=prev</id>
		<title>Editor at 10:42, 15 February 2023</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248863&amp;oldid=prev"/>
				<updated>2023-02-15T10:42:59Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 10:42, 15 February 2023&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The term &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;'&lt;/del&gt;specularum&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;' &lt;/del&gt;has relatively few references in standard dictionaries. It is the genitive plural of specula &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and &lt;/del&gt;means a watch tower or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;lookout &lt;/del&gt;in Latin&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. There are also references &lt;/del&gt;to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;specularium in the Latin nominative case to mean a window-pane, transparency, &lt;/del&gt;or a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;piece &lt;/del&gt;of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;glass letting through light into a building&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The term specularum has relatively few references in standard dictionaries. It is the genitive plural of specula &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;which &lt;/ins&gt;means a watch tower&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, lookout &lt;/ins&gt;or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;observation point &lt;/ins&gt;in Latin &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and can refer &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;slight &lt;/ins&gt;or a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;glimmer &lt;/ins&gt;of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;hope, it is also used in gaming ctivities. See also specularium&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Other &lt;/del&gt;references &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;talk of specularum as a building made of a transparent material constructed by &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Romans from thin pieces of mica or selenite. Mica is a naturally occurring igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be easily split or cleaved in &lt;/del&gt;to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;very thin translucent materials. Selinite is &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;relatively rare&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;glassy form of gypsum, selenite crystals form in large flat, transparent crystals&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;often called plates &lt;/del&gt;or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;windows, Satin spar, sometimes mistaken as selenite natural forms in transparent rods. In old English gypsum was referred to as spear stone (spærstn) because of these crystal spear-like projections.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;There are also &lt;/ins&gt;references &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;to specularium in &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Latin nominative case &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;mean &lt;/ins&gt;a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;window-pane&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;transparency&lt;/ins&gt;, or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;a piece &lt;/ins&gt;of glass &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;letting through light into &lt;/ins&gt;a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;building&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;The story that is associated with the term specularum is that before the use &lt;/del&gt;of glass&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor. The story and these Speculariums were described in the book 'The Gardener’s Labyrinth' by English gardener Thomas Hill, in 1577. Other references exist, but definitions of the term and conclusive evidence is harder to find&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Botanical gardens&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Cooling tower&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;* Biomes&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Electricity pylon&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Building an extension&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Martello tower&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Conservatory&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Peel tower&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Garden greenhouse&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Skyscraper&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Hydroponics and buildings&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Tall building&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Selenite&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Tower&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Satin spar.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Types &lt;/ins&gt;of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;building&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;The secret life &lt;/del&gt;of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the Georgian garden&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Types of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;structure&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Types of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;glass&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Commentary]] [[Category:DCN_Dataset]] [[Category:Definitions]] [[Category:History]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Commentary]] [[Category:DCN_Dataset]] [[Category:Definitions]] [[Category:History]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Editor</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248843&amp;oldid=prev</id>
		<title>Editor at 08:48, 15 February 2023</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248843&amp;oldid=prev"/>
				<updated>2023-02-15T08:48:40Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 08:48, 15 February 2023&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The term 'specularum' has relatively few references in standard dictionaries. It is the genitive plural of specula and means a watch tower or lookout in Latin. There are also references to specularium in the Latin nominative case to mean a window-pane, transparency, or a piece of glass letting through light into a building.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The term 'specularum' has relatively few references in standard dictionaries. It is the genitive plural of specula and means a watch tower or lookout in Latin. There are also references to specularium in the Latin nominative case to mean a window-pane, transparency, or a piece of glass letting through light into a building.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Other references talk of &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;specularium &lt;/del&gt;as a building made of a transparent material constructed by the Romans from thin pieces of mica or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;selinite&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;MIca &lt;/del&gt;is a naturally occurring igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be easily split or cleaved in to very thin translucent materials. Selinite is a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;soft&lt;/del&gt;, glassy form of gypsum.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Other references talk of &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;specularum &lt;/ins&gt;as a building made of a transparent material constructed by the Romans from thin pieces of mica or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;selenite&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Mica &lt;/ins&gt;is a naturally occurring igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be easily split or cleaved in to very thin translucent materials. Selinite is a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;relatively rare&lt;/ins&gt;, glassy form of gypsum&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, selenite crystals form in large flat, transparent crystals, often called plates or windows, Satin spar, sometimes mistaken as selenite natural forms in transparent rods. In old English gypsum was referred to as spear stone (spærstn) because of these crystal spear-like projections&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The story that is associated with the term &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;specularium &lt;/del&gt;is that before the use of glass, a form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor. The story and these Speculariums were described in the book 'The Gardener’s Labyrinth' by English gardener Thomas Hill, in 1577. Other references exist, but definitions of the term and conclusive evidence is harder to find.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The story that is associated with the term &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;specularum &lt;/ins&gt;is that before the use of glass, a form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor. The story and these Speculariums were described in the book 'The Gardener’s Labyrinth' by English gardener Thomas Hill, in 1577. Other references exist, but definitions of the term and conclusive evidence is harder to find.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Editor</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248840&amp;oldid=prev</id>
		<title>Editor at 08:39, 15 February 2023</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248840&amp;oldid=prev"/>
				<updated>2023-02-15T08:39:55Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 08:39, 15 February 2023&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Garden greenhouse.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Garden greenhouse.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Hydroponics and buildings.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Hydroponics and buildings.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;* Selenite.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;* Satin spar.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* The secret life of the Georgian garden.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* The secret life of the Georgian garden.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Types of glass.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* Types of glass.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Commentary]] [[Category:DCN_Dataset]] [[Category:Definitions]] [[Category:History]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:DCN_Commentary]] [[Category:DCN_Dataset]] [[Category:Definitions]] [[Category:History]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Editor</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248768&amp;oldid=prev</id>
		<title>Designing Buildings at 09:48, 14 February 2023</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=248768&amp;oldid=prev"/>
				<updated>2023-02-14T09:48:24Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
		&lt;tr valign='top'&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 09:48, 14 February 2023&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Specularum &lt;/del&gt;has relatively &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;little reference &lt;/del&gt;in standard dictionaries &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;but &lt;/del&gt;is the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;genetive &lt;/del&gt;plural of specula &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;to &lt;/del&gt;means a watch tower or lookout in Latin. There are references to specularium in the Latin nominative case to mean a window-pane, transparency, or a piece of glass letting through light into a building.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;The term 'specularum' &lt;/ins&gt;has relatively &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;few references &lt;/ins&gt;in standard dictionaries&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. It &lt;/ins&gt;is the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;genitive &lt;/ins&gt;plural of specula &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and &lt;/ins&gt;means a watch tower or lookout in Latin. There are &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;also &lt;/ins&gt;references to specularium in the Latin nominative case to mean a window-pane, transparency, or a piece of glass letting through light into a building.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Other references talk of specularium as a building made of a transparent material constructed by the Romans from thin pieces of mica or selinite. MIca is a naturally &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;occuring &lt;/del&gt;igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;esily &lt;/del&gt;split or cleaved in to very thin &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;transluscent &lt;/del&gt;materials. Selinite is a soft, glassy form of gypsum.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;Other references talk of specularium as a building made of a transparent material constructed by the Romans from thin pieces of mica or selinite. MIca is a naturally &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;occurring &lt;/ins&gt;igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;easily &lt;/ins&gt;split or cleaved in to very thin &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;translucent &lt;/ins&gt;materials. Selinite is a soft, glassy form of gypsum.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;minus;&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The story that is associated with the term specularium is that before the use of glass, a form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Tiberius&lt;/del&gt;. The story and these Speculariums were described in the book The Gardener’s Labyrinth by English gardener Thomas Hill, in 1577&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, other &lt;/del&gt;references exist but definitions of the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;terms &lt;/del&gt;and conclusive evidence is harder to find.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;The story that is associated with the term specularium is that before the use of glass, a form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor. The story and these Speculariums were described in the book &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;'&lt;/ins&gt;The Gardener’s Labyrinth&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;' &lt;/ins&gt;by English gardener Thomas Hill, in 1577&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. Other &lt;/ins&gt;references exist&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;but definitions of the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;term &lt;/ins&gt;and conclusive evidence is harder to find.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;= Related articles on Designing Buildings =&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Designing Buildings</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=245881&amp;oldid=prev</id>
		<title>Editor: Created page with &quot;Specularum has relatively little reference in standard dictionaries but is the genetive plural of specula to means a watch tower or lookout in Latin. There are references to spec...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Specularum&amp;diff=245881&amp;oldid=prev"/>
				<updated>2023-01-05T18:51:40Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;Specularum has relatively little reference in standard dictionaries but is the genetive plural of specula to means a watch tower or lookout in Latin. There are references to spec...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Specularum has relatively little reference in standard dictionaries but is the genetive plural of specula to means a watch tower or lookout in Latin. There are references to specularium in the Latin nominative case to mean a window-pane, transparency, or a piece of glass letting through light into a building.&lt;br /&gt;
&lt;br /&gt;
Other references talk of specularium as a building made of a transparent material constructed by the Romans from thin pieces of mica or selinite. MIca is a naturally occuring igneous and metamorphic rock formed of aluminosilicate minerals , whose individual mica crystals can be esily split or cleaved in to very thin transluscent materials. Selinite is a soft, glassy form of gypsum.&lt;br /&gt;
&lt;br /&gt;
The story that is associated with the term specularium is that before the use of glass, a form of greenhouse was built by the Romans for their Emperor Tiberius using either stretched and oiled cloth, pieces of translucent mica or selenite. The purpose was to enable the growth of cucumbers for longer periods which where either requested or medicinally required by the Emperor Tiberius. The story and these Speculariums were described in the book The Gardener’s Labyrinth by English gardener Thomas Hill, in 1577, other references exist but definitions of the terms and conclusive evidence is harder to find.&lt;br /&gt;
&lt;br /&gt;
= Related articles on Designing Buildings =&lt;br /&gt;
&lt;br /&gt;
* Botanical gardens&lt;br /&gt;
* Biomes.&lt;br /&gt;
* Building an extension.&lt;br /&gt;
* Conservatory.&lt;br /&gt;
* Garden greenhouse.&lt;br /&gt;
* Hydroponics and buildings.&lt;br /&gt;
* The secret life of the Georgian garden.&lt;br /&gt;
* Types of glass.&lt;br /&gt;
&lt;br /&gt;
[[Category:DCN_Commentary]] [[Category:DCN_Dataset]] [[Category:Definitions]] [[Category:History]]&lt;/div&gt;</summary>
		<author><name>Editor</name></author>	</entry>

	</feed>