They are Janvil. Their site is http://www.janvil.com . They have glass scratch removers for glass scratches and plastic polish
scratch it against glass if the glass scratches its diamond
You can verify a diamond by taking it to a jeweler, who can verify which stone you're using to scratch glass.
because it is transparent to let people see through and it does not get scratches easily so that we can see clearly
Plexiglas and lead are frequently used.
Plexiglas was discovered by Walter Bauer and Otto Rohm of the Rohm and Haas company in Germany in 1933. some people, mostly Canadians, claim that William Chalmers discovered Plexiglas at McGill University, while a graduate student. He actually worked with an inferior plastic called poly(ethyl methacrylate) at a later date. Detailed references to the history of Plexiglas are available at the following link: https://sites.google.com/site/hjhatua
Plexiglas weighs less
The advantages of Plexiglas compared to that of normal glass are first that Plexiglas cost a fraction of the price, second it is very durable and wont shatter like glass.
The type of glass most commonly used is Plexiglas which is an acrylic polymer. Another type used as an alternative to Plexiglas is polycarbonate.
Yes, not only is Plexiglas completely recyclable, it is also extremely durable. This type of glass is not recycled with standard glass but can be taken to most recycling centers.
If it is regular glass then it will probably shatter it. If it is Plexiglas or another form of reinforced glass it may not shatter it.
It would have to be 5.0 because glass has a hardness of 5.5 and an iron nail has the hardness of 4.5
Glass can break easily, and can get marks and scratches
yes it is is a physical property
Depends on the application. Glass can shatter, but is more resistant to scratches. Polycarbonate is lighter, doesn't shatter or crack easily, but has a fairly soft surface that scratches easily.
Toothpaste is better used to remove scratches from a CD or DVD disk,, for a glass watch,I would a special polish's for glass. First try a auto parts store.
scratch it against glass if the glass scratches its diamond
6.0