The Surprising truth about Smartphone Screen Protectors.
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Multiple things to consider before buying screen Protector.
- It would have been neat to see UV light on the screen protectors. If you haven’t looked at your phone screen with UV then you are missing something cool. I have the feeling that the sapphire will fluoresce slightly and look very different than tempered glass under the influence of UV light.
- Tempered glass is very soft and does not function the way sapphire does. Tempered glass fractures easily and then redirects the impact parallel with the screen creating long cracks. This dissipates the impact energy across the screen and not through it.
- The Mohr Hardness Test is usually done with a Diamond Penetrator and small hydraulic press with a pressure gauge. Scratch tests do give an indication of how the screen protector will respond in everyday use however a proper penetrating hardness test will give more useable data.
- Impact tests are almost always done with a swinging weight, usually a steel ball on a cable or a hammer on a fixed trajectory swing. Good job rigging some tests at home though! Who doesn’t want to see a phone smashed with a brick? Classic.
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