Foreshock of Kumamoto earthquakes
A foreshock earthquake of the 2016 Kumamoto earthquakes with a magnitude 6.2 occured on April 14, 2016, at a depth of about 11 kilometres (6.8 mi). Although the focus of the foreshock earthquake was 12.0 kilometres (7.5 mi) beneath Mount Kinpo to the north-northwest of Kumamoto's city center, the worst-hit area was in the eastern Kumamoto suburb of Mashiki, where the foreshock earthquake's victims perished.
1999 Sydney hailstorm
The 1999 Sydney hailstorm was the costliest natural disaster in Australian insurance history, causing extensive damage along the east coast of New South Wales. The storm dropped an estimated 500,000 tonnes of hailstones in its path. Insured damages caused by the storm were over A$1.7 billion, with the total damage bill (including uninsured damages) estimated to be around A$2.3 billion.
Tornado hit Dhaka, East Pakistan
One of the deadliest tornadoes in history struck the northern suburbs of Dhaka, East Pakistan (now Bangladesh) killing 660 people. Another tornado in Homna Upazila killed 263 people.
Valentin Lebedev was born
Former Soviet cosmonaut, Valentin Vitalyevich Lebedev, who made two flights into space was born on this day. In 1982, his stay in space lasted 211 days and was recorded in the Guiness Book of Records. In 1991 he started the Scientific Geoinformation Center of the Russian Academy of Science.
Emmy Noether died
Amalie Emmy Noether was a German mathematician who made many important contributions to abstract algebra. She discovered Noether's First and Second Theorem, which are fundamental in mathematical physics. She was described by Pavel Alexandrov, Albert Einstein, Jean Dieudonne, Hermann Weyl and Norbert Wiener as the most important woman in the history of mathematics. As one of the leading mathematicians of her time, she developed some theories of rings, fields, and algebras. In physics, Noether's theorem explains the connection between symmetry and conservation laws.
Worlds first artificial nuclear fission with Lithium
The world's first Lithium artificial nuclear fission was performed in the world's first particle accelerator, the Cockcroft-Walton generator, built by Ernest Walton and John Cockroft. The event took place at the University of Cambridge.
Hauser Dam failure
On April 14, 1908, at about 2:30 p.m., Hauser Dam failed after water pressure undermined the masonry footings (the steel dam itself being structurally sound). The masonry footings gave way, causing the upstream section of the dam to settle and a 30-foot (9 m) wide breach to open in the dam. The collapse of the dam affected the way engineers design dams. Even though the washout was the fault of too-short pilings - not the fault of steel - engineers rejected steel as a dam-building material, and no other steel dam has ever been built.
