If the glass has been tempered, you will most likely see some spots or lines running across it. The lines and spots are caused by the machine rollers that were employed during the heating process. You'll have to look attentively to see these because they may be pretty subtle at times.
Tempered glass is stronger than an un-tempered piece of glass of the same thickness. This is because the heat treatment makes the glass more brittle but also changes its molecular structure, making it more flexible as well. Therefore, using tempered glass can help prevent injuries that might otherwise occur due to a sharp object being used against a window outside.
The safety features available on newer vehicles make me wonder what drivers used to do before airbags! Even though these features were probably not popular yet, I'm sure they must have been used by some people. For example, many older cars had brake assist systems that would apply the brakes if you didn't react in time. These days, vehicles come with ABS (anti-lock braking systems) which work together with computer sensors to ensure that your vehicle stops as quickly as possible even if you don't take notice of what's going on around you.
Some vehicles also have traction control systems that limit how much power goes to each wheel in order to maintain stability when driving on wet roads for example. These systems can sometimes cause problems for drivers who aren't used to them, but overall they're very safe.
Examine the margins of it. Tempered glass often has entirely smooth edges due to the additional processing it undergoes, whereas other forms of glass typically have scuffed or ridged edges. If the glass's edges are visible, rub your fingertips down them. Smooth edges will be all one piece, while rippled or broken edges will remain separated.
If you drop something on a tempered glass surface, it may break apart or leave sharp pieces of glass in its place. This is because tempered glass cannot break like ordinary glass; instead, it becomes more rigid and stays that way even after being struck by an object.
Tempered glass is used for windows, doors, and display cases because it doesn't break like regular glass. It's also used in some safety equipment, such as windshields, because they must be transparent when driving in bad weather or heavy traffic conditions.
The advantage of using tempered glass is that it prevents injuries due to falling objects or when involved in a car accident. The disadvantage is that it is more expensive than regular glass.
If there are bumps and waves, the glass has been tempered. When using polarized sunglasses, keep an eye out for black lines. Tempering the glass, or heating and rapidly cooling it, results in some black lines. These lines may be seen via polarized sunglasses at a 45-degree angle.
Black lines are also visible on clear glass. This shows that the glass has been heated and cooled slowly, without any intervening steps, which would otherwise remove the heat to create a flat surface.
Heated glass is more flexible than unheated glass. This is why car windshields are usually made of laminated glass, with one side heated when pressed against by a hot metal strip during assembly of the vehicle.
Heated glass is used in doors, windows, and other components exposed to weather conditions. This allows these surfaces to be shaped without breaking.
Unheated glass is used in interior panels and other areas where flexibility is not necessary. The advantage here is maximum visibility through the window.
Glass in an aquarium should be tempered to prevent injury if someone tries to break into your tank. The glass will fracture instead of being sharp like regular window glass, which could cause serious injuries were it to hit someone. Also tempered glass doesn't reflect light like non-tempered glass, which could hide predators from view.
The edges of tempered glass are smooth. So, one effective method is to carefully examine the glass's edges. Because of the additional processing, tempered sheets have smooth and equal edges. This is in contrast to standard glass, which has sharp corners and irregular surfaces.
Another difference between tempered and standard glass is that the former is more resistant to damage from being hit or stabbed. This is because any piece of glass that enters the body can be easily removed by a doctor without much risk of injury. Standard glass, on the other hand, can cause serious injuries if it enters your body because it can fracture like bone upon impact.
Furthermore, tempered glass is safer to transport than standard glass because it does not break as easily. This is due to the fact that its edge is more rigidly held within the mold during production. So, when it comes time to pack up for shipping, the boxes used to protect the glass will be thicker than those used for standard glass.
Last, but not least, tempered glass is safer to use as an object in a crime scene. This is because any marks on the surface of the glass can help police identify the owner of the glass. Since everyone knows what kind of mark standard glass will make, this helps distinguish evidence that may have otherwise been confused during testing for fingerprints or DNA.