How to make the ice on the water go the farthest?

A researcher in Utah State (USA) has discovered the most optimal angle when throwing a stone on the water, making it possible to travel farthest. This new discovery promises to bring many useful applications in life for people.

Inspired by British scientist Barnes Wallis, who invented the jumping bomb, researchers have for years described the complex physical effects behind rock phenomenon, toys and even even bullets from cannons can jump on water.

The perfect corner of the stone

In the past, there were also records of how the 18th century naval gunners used bullets from cannon fire on the water to lower enemy ships. However, it seems that until now, there have been no in-depth studies, or optimal ways and angles to be able to throw rocks on the water surface that are farthest away.

Recently, a professor named Tadd Truscott, and several colleagues at Brigham Young University, Utah (USA), discovered that the angle to throw a stone away was as far as 20 degrees . At the same time depending on the weight of the object, this optimal angle will need to be reduced to achieve the farthest throw effect.

Writing in Physics Today, researchers say that toy balls made of flexible materials have adequate height and easy deformation, so it can create jumps on the water.

But there is a fact that many people know, in addition to the throw angle in the study is 20 degrees, the more important thing is that the shape of the stone needs to be flat and disc-shaped.

The boy plays paving stones on the beach

Therefore, although toy balls can jump on the water, it is difficult to "pass " with disc-shaped stones because of the weight and size do not allow. And that was also the reason why heavy steel cannon bullets needed a lower firing angle, to make sure not to sink into the water immediately after firing.

Currently, the Guinness record of the farthest rocking ability belongs to an American named Kurt Steiner with over 88 successful water jumps. The above record was taken at the Red Bridge Bridge, near Lake Kane, Pennsylvania, USA on September 6, 2013. According to the report, Kurt used very smooth stones weighing about 85 - 226 grams, flat bottom and thickness of 6.35 - 7.9 mm to make an impressive record.

Reference: DailyMail, Guinness World Records.