Talk:Gorilla Glass

History

I recommend removing the history section that says "What became Gorilla Glass started in the 1960s with vehicle windshields" since Corning's own website disputes that. http://www.corninggorillaglass.com/faqs/all : "Is it true that Corning Gorilla Glass was originally developed in the 1960s? No. That has been a popular myth, which apparently resulted from a misunderstanding of the facts." lennylim 23:45, 14 October 2011 (UTC)

Agreed. Removed History section as Corning themselves contradict the information that was included. It also did not relate to Gorilla Glass but rather a different product. Veritycheck (talk) 16:24, 16 October 2011 (UTC)

This paragraph of the article is still in contradiction with the official FAQ:

Jobs ended up contacting the CEO of Corning, Wendell Weeks and told him that Apple needed a light yet strong enough glass screen for use in their consumer devices. Weeks told him of the "gorilla glass" that the company had developed in the 1960s but had since been mothballed. Jobs convinced Weeks to immediately put the glass into production for use in the upcoming iPhone.

-Oosh (talk) 03:20, 20 March 2012 (UTC)

I have also noticed the discrepancies given in the two cited sources concerning gorilla glass. The article could definitely be improved by better reflecting this. At the moment, the Steve Jobs biography version has taken precedence over Corning's. I'll try to amend this shortly if no other editor does so first. In time, other sources may give more weight to which version is true. It's useful to remember that Wikipedia does not seek to establish fact but rather only what has previously been stated, documented and is verifiable. Veritycheck (talk) 11:40, 20 March 2012 (UTC)

With respect to who called who, consider that strengthening of LiAlSiOx glass from NEG with KNO3 at high temperatures was presented at the Glass and Optical Materials Division (GOMD) meeting in Cape Canaveral, FL on November 9, 2004, . Corning employees have often been attendance for this topic although two of the several Corning employees in attendance were presenting in another room at a similar time slot but are also likely to obtained the proceedings. However, To further confuse the issue, Apple posted a Supplier Quality Engineering position in 2005 and received a response with similar information. Thus, both organizations probably had access to the information in the time frame in question. DuckTapeEngineer (talk) 04:27, 20 July 2016 (UTC)

References

Steve Jobs Role aka Rocky G

The Steve Jobs biography includes a section describing Rocky's role in reviving gorilla glass production. Information from this source could enhance this article. — Preceding unsigned comment added by Lbeaumont (talk • contribs) 01:42, 24 November 2011 (UTC)

See about half way down this page: http://www.appleinsider.com/articles/12/02/03/former_apple_product_manager_recounts_how_jobs_motivated_first_iphone_team.html
LP-mn (talk) 19:01, 3 February 2012 (UTC)

iPhones?

Seems to be conflicting information. The list of devices with Gorilla Glass specifically says that only the first generation iPhone used it but the last sentence of the first paragraph of this article cites a reference that talks about iPhone 4's Gorilla Glass...

Someone needs to correct the claim that the iPhone was the first to use gorilla glass, several other phones had used it prior to the iPhone. It seems the 'official innovation' of the iPhone and apple / Steve Jobs role in it has confused the real history. It is not the first time apple has made statements, about being the first at or to use something, that were completely untrue. The sources provided also do not support the claim but only show gorilla glass was used — Preceding unsigned comment added by 106.69.248.85 (talk) 12:58, 12 January 2019 (UTC)

Which is right? If the article being cited for that quote about iPhone 4 Gorilla Glass is wrong, then that sentence should probably be removed even though it does give interesting info about a sapphire hardness equivalence. — Preceding unsigned comment added by 64.208.122.50 (talk) 20:56, 4 May 2012 (UTC)

I believe the newer iphones use the identical product, but do not use Corning's trademarked name-- it's a difference of branding, not of substance. I'll see if I can run down a source. — Preceding unsigned comment added by 74.112.38.214 (talk) 18:13, 31 May 2012 (UTC)

No iphone has this product, please remove the false info. If PCMagazine says that the sun is brown does we have to believe it without proof?

products with Gorilla Glass--190.150.4.203 (talk) 20:02, 11 October 2012 (UTC)

Removing content that refers to other types of glass

I have removed edits that introduce other types of glass and other Corning products. The scope of this article is limited to the product Gorilla glass. Other products should be added to the Corning page or to their own pages if warranted. Veritycheck (talk) 14:05, 8 June 2012 (UTC)

I've added some content that relates to Lotus Glass, which is distinct from Gorilla Glass but can be used with Gorilla Glass. There seem to be a number of articles suggesting Lotus as a replacement for Gorilla -- hence the inclusion of information that contrasts the two.842U (talk) 11:25, 31 July 2012 (UTC)

More neutral tone

The opening paragraphs seem to use a lot of promotional language -- almost as if they were borrowed from Corning's PR department.

I have partially addressed this matter, but have inserted a Copy edit template until I review the entire article in due course.--Soulparadox (talk) 13:54, 28 October 2014 (UTC)

Cost

Adding statements of cost, including comparison to other types of glass (e.g., window glass, safety glass) would be of interest. Dan Aquinas (talk) 18:57, 12 September 2012 (UTC)

Regarding Apple's usage of Gorilla Glass

as per this link Products with Gorilla Glass "Due to customer agreements, we cannot identify all devices that feature Gorilla Glass. Your favorite device may include Gorilla Glass, even if you don’t see it listed" — Preceding unsigned comment added by Count of Tuscany (talk • contribs) 07:31, 5 November 2012 (UTC)

Stroughness

I m not sure where the quote about strength is from, but Corning specifically point out it is "the science of tough" and "Glass breaks when damage, such as a scratch or a chip, on the surface is subjected to bending or other stresses". As with most materials, the ability to stop cracks is key. Jabberwoch (talk) 02:42, 28 May 2013 (UTC)

References

Good information removed?

Why where these removed?

They may have been removed because the claims made by apple about gorilla glass and its role in the now common use of it is untrue. Gorilla glass had been used in some phones and other devices prior to the iPhone. The information currently appears on the page but without a source that can actually support the claims it will be removed again. It is unfortunate that apple does regularly attempt to 'change history' with its claims and that independent sources are required — Preceding unsigned comment added by 106.69.248.85 (talk) 13:09, 12 January 2019 (UTC)

It's fine if the 'advertising' tone is removed but that these things are now not mentioned at _all_? --Diblidabliduu (talk) 17:32, 4 October 2013 (UTC)

Readded this information. Looked at the IP of this account, and these are the only two edits this user made. Assuming Vandalism of the page, with no one reverting his or her edits. Shaded0 (talk) 15:54, 15 October 2013 (UTC)

Thanks for your contribution. --Diblidabliduu (talk) 22:59, 18 October 2013 (UTC)

Material properties

itsnotmyfault1 removed: "The difference in brittleness (correlated by Young’s Modulus) between Gorilla Glass 2 and 3 is 71.5 and 69.3 GPa respectively. This is a 3% difference. As a comparison, glass is usually around 50-90 GPa, mother of pearl is on average 70 GPa. The axial stress (Poisson’s Ratio) is almost exactly the same, 0.21 to 0.22, which can easily be due to systematic and rounding errors. The fracture toughness decreased from 0.68 to 0.66 MPa; in other words Gorilla Glass 3 is harder but more brittle."

The original author misused: brittleness, young's modulus, Poisson's ratio , hardness, and fracture toughness. The units are even wrong on some of them. The short version is: A brittle material normally snaps instead of bends. Toughness of a material refers to the total amount of energy a material absorbs without fracturing. Young's Modulus has to do with how much a material deforms under load. In other words, if two materials have the same young's modulus, and the same yield point, but one is brittle and the other is ductile (brittle breaks, ductile bends), the ductile material will be tougher. Young's modulus and brittleness aren't connected in the way the author seems to believe. Poisson's ratio is the ratio of strain along one axis compared to the axis you pulled on. Imagine a rubber band getting skinnier as you pull it out. It's not related to axial stress the way the author seems to be saying. Fracture toughness is in the wrong units here. I've never used that measure, so I can't comment on it, besides being completely sure that it's being incorrectly used. Hardness isn't directly related to any of the listed properties. You would need to know what it is on a Mohs, Brinell or Rockwell scale. Preferably all three. Itsnotmyfault1 (talk) 16:23, 19 December 2014 (UTC)

So how hard are the different versions

How hard is Gorilla Glass 3 in Indentation hardness terms ? - Rod57 (talk) 22:09, 9 February 2018 (UTC)

References

Ion-X glass

I need information about Ion-X glass. Is it similar to Gorilla Glass? How same, how different, how made, how strong, how scratch resistant, (mohs etc), shatterproof, etc.

Could wikipedia please add information on that here, or in a separate article?

99.190.133.143 (talk) 16:30, 28 April 2015 (UTC)

This article title is a brand name of Corning.

Corning is a fine company, and its branded "Gorilla Glass" is a fine product. But is there a generic description of the class of glass described? If so, what is the generic class?

99.190.133.143 (talk) 16:32, 28 April 2015 (UTC)