emboldened, strengthened, burgeoned, fortified
25 kg/m2 is a density of a toughened glass with 10 mm thick. If you want convert that measure into kN, then multiply by the factor "g" that is gravity (9.81 m/s2) and you get 25 x 9.81 = 245.25 kN/m2.
Toughened glass, also known as tempered glass, is made by heating standard glass to around 600 degrees Celsius and then rapidly cooling it. This process, known as thermal tempering, introduces compressive stresses on the surface and tensile stresses within the glass, enhancing its strength and resistance to impact. The toughened glass is typically cut and processed before the tempering stage, as the high temperatures make it impossible to cut afterward. The result is a durable material that is less likely to shatter upon impact and, if broken, fragments into small, less dangerous pieces.
Toughened glass was first invented by a glassmaker who wanted to make a windscreen for a vehicle such as a car or a train so that it would break into lots of tiny fragments that would cause less injury to someone if they were thrown through it if the vehicle was involved in a collision. (If ordinary glass were used it would crack into large pieces which would badly cut that person.)
A simple synonym is creator.
The synonym for "weather-tight", would be water-proof.
The material for most bus windows is toughened glassThe material for most bus windows is toughened glass
ovule Infact ovule in itself is not a toughened material, it is lignin and cuticle (made up of complex carbohydrates) which make the post fertilized ovule (seed) toughened.
1dollar
Hardened
On average, 3mm toughened glass weighs approximately 7.5 kg per square meter.
toughened
An angiosperm seed coat is formed from toughened parts of the ovule wall. This wall provides protection for the developing embryo and seed contents. It also helps prevent desiccation and mechanical damage during seed dispersal.
47kg
10Kilo
Shoot it, look at the effects to the glass.
Standard toughened glass is class 0
6mm means 0.006m or 0.6 cm