A video that challenged ``draining'' with a bullet shot with a gun appeared, and what was the unexpected result captured by the high-speed camera?



The Slow Mo Guys , which publishes slow motion images captured with a high-speed camera, such as the moment the glass breaks and the bullets of the rifle flying, experimented with the movement when the bullet was fired toward the water surface. I'm here.

Bouncing Bullets off Water in Ultra Slow Motion-The Slow Mo Guys-YouTube


Mr. Gav and Mr. Dan of YouTuber 'The Slow Mo Guys'.



If you fire a bullet at the pond in the shooting range, it may

ricochet here and there, making it difficult to shoot.



Therefore, by firing a bullet toward a water tank with a bank behind it, the bullet that bounces back will enter the sand as it is.



According to Dan, using a 50-caliber

rifle bullet could easily destroy the tank. So this time we will use a small .22 long rifle bullet .



A high-speed camera Phantom TMX 7510 is used for shooting. The shooting speed can be shot at 82,000 frames per second at full frame.



Mr. Dan assumes two patterns: 'the fired bullet breaks through the water tank' and 'the bullet bounces off the surface of the water'.



First, when the bullet was fired experimentally toward the surface of the water, the bullet bounced off with a large splash and hit the bank behind.



Checking the slow motion video taken, it has landed in the near side. ``I didn't want to hit the back of the tank and destroy it, so I had no choice but to aim at the front,'' Dan said.



Next, they set up an LED light under the tank and fire the bullet again.



Looking at the slow motion video, it was confirmed that the bullet that hit the center of the aquarium bounced off the water.



When measuring the speed, it was 671 mph (about 1080 km / h) when entering the water.



The bullet slowed down by water resistance decelerates to 469 mph (about 754 km / h) and jumps out of the water.



In addition, they will experiment with

9x19mm Parabellum rounds .



22 Long Rifle projectiles produce a more violent splash than experiments with .22 Long Rifle ammunition.



Checking the slow motion video taken, the fired bullet does not bounce in the water and collides with the wall of the aquarium.



However, since the bullet that hit the water tank did not fall and bounced back, it can be confirmed that there was still enough propulsion at the time of collision.



Mr. Dan speculated that the cause of such a result was 'the launch angle was too steep.' In order for the bullet to bounce off the surface of the water, it needs to be fired at a shallower angle.



Looking at the bullet I picked up, the tip has become flat.



22 long rifle ammunition at the same angle as the 9x19mm Parabellum experiment.



The .22 Long Rifle ammunition is similarly blocked by the tank wall.



Looking at the bullet, the .22 Long Rifle bullet is flattened all over.



``It was unexpected that the bullet would not only bounce off the surface of the water, but also hit the wall without destroying the tank,'' they said.

in Science,   Video, Posted by log1r_ut