Glass is usually made shatter proof in order too prevent long sharp pieces of glass injuring people. This is done by either applying a clear sheet of plastic too the glass, or the glass sheet is heated till just below the softening point and then cold air is blasted onto the glass, this way when the glass breaks into small chunks which would explain why in some cases the bullet only punctured a hole instead of shattering the whole sheet of glass.
Simple answer, it makes a hole and the blood all comes out the hole. More detailed answer, a fired bullet carries a lot of energy, destroys tissues and structures along its path and causes traumatic injury.
A bullet travels at really high velocity and therefore the glass does not have enough time to bend due to the force and shatter instead the bullet just damages the area it gets in contact with and thus making a hole in the glass. Whereas a stone travels at a low velocity and the glass has enough time to bend and shatter
It's all down to surface area and speed ! The bullet is tapered to a point or rounded tip - the stone is bulky and irregular in shape. The bullet is travelling faster than sound - the stone travels at just a few feet per second.
when a bullet strikes the glass pane with a high velocity, the larger part of the glass plane do not get enough time to share the momentum due to inertia of rest and only that part which is in contact of the bullet is blown off according to the law of conservation of momentum But when a slow moving stone strikes the glass plane a larger part of the glass is able to share the momentum and therefore it smashes the glass
A so-called "glass" thermometer has a small bore-hole in the center of the glass that has some liquid in it. It's the activity of the liquid in the narrow hole that makes the thermometer a thermometer.
Simple answer, it makes a hole and the blood all comes out the hole. More detailed answer, a fired bullet carries a lot of energy, destroys tissues and structures along its path and causes traumatic injury.
A bullet travels at really high velocity and therefore the glass does not have enough time to bend due to the force and shatter instead the bullet just damages the area it gets in contact with and thus making a hole in the glass. Whereas a stone travels at a low velocity and the glass has enough time to bend and shatter
It's all down to surface area and speed ! The bullet is tapered to a point or rounded tip - the stone is bulky and irregular in shape. The bullet is travelling faster than sound - the stone travels at just a few feet per second.
when a bullet strikes the glass pane with a high velocity, the larger part of the glass plane do not get enough time to share the momentum due to inertia of rest and only that part which is in contact of the bullet is blown off according to the law of conservation of momentum But when a slow moving stone strikes the glass plane a larger part of the glass is able to share the momentum and therefore it smashes the glass
At the point of impact, the glass immediately infront of the projectile is powerded. This causes localized stress in the rest of the sheet, as can be seen by the spider web around the hole. The rest of the cracks radiating from the site are where the residual energy from the impact are distributed.
A bullet is simple a projectile normally fired from a firearm (Guns) that has one per pose which is to put a hole in what ever it is fired at.
It makes a hole.
is wider on the exit side
I would say this has to do with velocity of the bullet.(speed)
It would be possible for a .22 bullet to brake the first pane and not damage the second. I would expect to find signs of a bullet hole in the broken pane. But it depends on the temper of the glass. High tempered glass will shatter. You usually find these in sliding doors. I knicked one and it cracked over the entire door. WIthin the hour it was a heap of broken glass on the floor. It is possible.
When the cartridge is fired, the bullet is driven through the barrel, At one point a small hole is drilled in one side of the barrel. As the bullet passes that hole, some of the gas that is pushing the bullet through the barrel enters that hole, and pushes against the gas piston. The gas piston drives the bolt to the rear, extracts the fired cartridge case, and ejects it from the rifle. A return spring pushes the bolt forward, where it strips a fresh cartridge from the magazine, and chambers it- ready to fire again.
The shatter proof film does increase the glass's resistance to being broken, and when it does get broken, the pieces are stuck together and don't collapse into sharp fragments. It in no way means the glass is unbreakable though, a strong enough force can make a hole. It certainly could not stop a bullet, which would punch right through it.