Talk:Glass

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Glass is a former featured article. Please see the links under Article milestones below for its original nomination page (for older articles, check the nomination archive) and why it was removed.

Glass has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it.

This article appeared on Wikipedia's Main Page as Today's featured article on September 17, 2004.

Article milestones
Date	Process	Result
May 3, 2004	Featured article review	Kept
July 21, 2004	Featured article candidate	Promoted
April 17, 2006	Featured article review	Demoted
July 28, 2006	Good article nominee	Not listed
October 27, 2007	Good article nominee	Not listed
October 15, 2017	Good article nominee	Not listed
November 10, 2019	Good article nominee	Not listed
March 9, 2020	Good article nominee	Listed
A fact from this article appeared on Wikipedia's Main Page in the "Did you know?" column on March 22, 2020. The text of the entry was: Did you know ... that glass (example pictured) can form naturally from supercooled volcanic magma?
Current status: Former featured article, current good article

Glass Top‑importance

	This article is within the scope of WikiProject Glass, a collaborative effort to improve the coverage of glass on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.GlassWikipedia:WikiProject Physics/Taskforces/GlassTemplate:WikiProject Glassglass
Top	This article has been rated as Top-importance on the importance scale.

Craft Top‑importance

	This article is within the scope of WikiProject Craft, a collaborative effort to improve the coverage of craft on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.CraftWikipedia:WikiProject CraftTemplate:WikiProject CraftCraft
Top	This article has been rated as Top-importance on the importance scale.

Materials Top‑importance

	This article is within the scope of WikiProject Materials, a collaborative effort to improve the coverage of Materials on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MaterialsWikipedia:WikiProject MaterialsTemplate:WikiProject MaterialsMaterials
Top	This article has been rated as Top-importance on the importance scale.

Technology

This article is within the scope of WikiProject Technology, a collaborative effort to improve the coverage of technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TechnologyWikipedia:WikiProject TechnologyTemplate:WikiProject TechnologyTechnology

Visual arts

This article is within the scope of WikiProject Visual arts, a collaborative effort to improve the coverage of visual arts on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Visual artsWikipedia:WikiProject Visual artsTemplate:WikiProject Visual artsvisual arts

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Solid?

I thought the process of relaxation showed that glass isn't really a solid or a liquid. 2600:6C44:6E00:178B:FA4:406B:E95A:EC85 (talk) 08:48, 15 June 2023 (UTC)[reply]

No, that's a myth, as explained in the article. Polyamorph (talk) 08:55, 15 June 2023 (UTC)[reply]

Semi-protected edit request on 9 August 2023

This edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request.

In the intro, please change "3,600 BC" to "3600 BC". Commas aren't usually used for digit grouping in year numbers (it's not 2,023 right now), and they're not used in any of the other pre-1000BC years that appear in the history section. 123.51.107.94 (talk) 23:31, 9 August 2023 (UTC)[reply]

Done RudolfRed (talk) 00:38, 10 August 2023 (UTC)[reply]

Wrong date

The Roman cage cup photo under the History section should say 4th century C.E., not B.C. 2601:19D:403:DFE0:257D:4F2B:5656:37FC (talk) 05:34, 21 December 2023 (UTC)[reply]

Done kind of an embarrassing mistake. Recon rabbit 12:38, 9 July 2024 (UTC)[reply]

Edit suggestion

in the image of the amorphous structure of SO2, it says the red atoms are silicon and the blue ones oxygen. It’s the other way around. One silicon atom is bonded to two oxygens it shares with another silicon atom. Geefkip (talk) 18:41, 11 January 2025 (UTC)[reply]

It’s also common to adress oxygen with red and that’s what stood out to me first Geefkip (talk) 18:42, 11 January 2025 (UTC)[reply]

The figure and description is correct. There are 4 oxygen atoms bonded to each silicon - although as this is a pseudo 2D representation only 3 are visible. Polyamorph (talk) 20:04, 11 January 2025 (UTC)[reply]

Remove "Glass is sustainable" greenwashing

"Glass packaging is sustainable, readily recycled, reusable and refillable."

I have doubts about sustainability of glass packaging, especially since this claim comes from FEVE ("FEVE is the Federation of European manufacturers of glass containers for food and beverage and flacons for perfumery, cosmetics and pharmacy markets.") so I assume they are biased.

Glass has a high melting point and glass recycling is an energy intensive process. Especially single-use glass, which is still found a lot for example in beer bottles, is not sustainable. In practice, even glass containers that can theoretically be reused are not commonly reused and instead discarded into recycling, even in deposit systems in Europe. For example in Romania, a deposit on glass containers was introduced but the machines at the supermarket crush the bottles.

We are facing an ecological catastrophe and I think calling glass sustainable without putting data next to it is misleading at best. 212.95.5.63 (talk) 14:13, 20 March 2025 (UTC)[reply]