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Dec 20, 1279
The first grenade
A hand grenade is any small bomb that can be thrown by hand. A variety of types of hand grenades exists, the most common being explosive grenades designed to detonate after impact or after a set amount of time.
Grenadiers were originally soldiers who specialized in throwing grenades. -
Aug 10, 1281
The First Bomb
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Feb 6, 1300
The first Firearm
A firearm is a portable gun, being a barreled weapon that launches one or more projectiles often driven by the action of an explosive force.[1][2][3] The first primitive firearms were invented in 13th century China when the man portable fire lance (a bamboo or metal tube that could shoot ignited gunpowder) was combined with projectiles such as scrap metal, broken porcelain, or darts/arrows -
Aug 26, 1346
First Cannon
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Period: Jan 1, 1500 to
Science
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Dec 1, 1508
Discovery of sun in center of solar system
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The First Steam Engine
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First two laws of planetery motion
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First study of oscillating system and design of pendulum clock
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Discovery of the atmosphere of Venus
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Charles' law of ideal gas
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Establishes extinction as a fact
In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a spec -
Galvanic Music
In 1840, American Charles Grafton Page passed an electric current through a coil of wire placed between the poles of a horseshoe magnet. He observed that connecting and disconnecting the current caused a ringing sound in the magnet. He called this effect "galvanic music -
Theory of Evolution
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Periodic Table
The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers (numbers of protons in the nucleus), electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number, which is typically listed with the chemical symbol in each box. The standard form of the table consists of a grid of elements laid out in 18 columns and 7 rows, with a double row of elements below that. The table can also be -
Theory of electromagnetism
Electromagnetism, or the electromagnetic force is one of the four fundamental interactions in nature. The other three are the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. -
Statistical definition of entropy
The macroscopic state of the system is defined by a distribution on the microstates that are accessible to a system in the course of its thermal fluctuations. So the entropy is defined over two different levels of description of the given system. The entropy is given by the Gibbs entropy formula, named after J. Willard Gibbs. For a classical system (i.e., a collection of classical particles) with a discrete set of microstates, if E_i is the energy of microstate i, and p_i is its probability that -
The first carbon filament light bulb
The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours. -
The First Car
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Wright Brothers First Flight
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Theory Of Relativity
The theory of relativity was representative of more than a single new physical theory. There are some explanations for this. First, special relativity was published in 1905, and the final form of general relativity was published in 1916.
Second, special relativity applies to elementary particles and their interactions, whereas general relativity applies to the cosmological and astrophysical realm, including astronomy.
Third, special relativity was accepted in the physics community by 1920 -
Model of the atom
In atomic physics, the Rutherford–Bohr model or Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity. After the cubic model (1902), the plum-pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just -
Discovery Of Megaladon
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First Ballistic Missile
The first ballistic missile was the A-4,[1] commonly known as the V-2 rocket, developed by Nazi Germany in the 1930s and 1940s under direction of T.J. Gertner and Wernher von Braun. The first successful launch of a V-2 was on October 3, 1942, and began operation on September 6, 1944, against Paris, followed by an attack on London two days later. By the end of World War II, May 1945, over 3,000 V-2s had been launched. -
Nuclear Bomb
Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army on July 16, 1945, as a result of the Manhattan Project. The new test site, named the White Sands Proving Ground, was built in the Jornada del Muerto desert about 35 miles (56 km) southeast of Socorro, New Mexico, at the Alamogordo Bombing and Gunnery Range (now part of the White Sands Missile Range) -
Plate tectonics
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The Polio Vaccine
Two polio vaccines are used throughout the world to combat poliomyelitis (or polio). The first was developed by Jonas Salk through the use of HeLa cells and first tested in 1952. Announced to the world by Dr Thomas Francis Jr. on April 12, 1955,[1] it consists of an injected dose of inactivated (dead) poliovirus. An oral vaccine was developed by Albert Sabin using attenuated poliovirus. Human trials of Sabin's vaccine began in 1957, and it was licensed in 1962.[2] There is no long term carrier s -
First Artificial Sattelite
The world's first artificial satellite, the Sputnik 1, was launched by the Soviet Union in 1957. Since then, thousands of satellites have been launched into orbit around the Earth. Some satellites, notably space stations, have been launched in parts and assembled in orbit. Artificial satellites originate from more than 50 countries and have used the satellite launching capabilities of ten nations. A few hundred satellites are currently operational, whereas thousands of unused satellites and sate -
First Man On The Moon
Armstrong's second and last spaceflight was as mission commander of the Apollo 11 moon landing, in July 1969. On this mission, Armstrong and Buzz Aldrin descended to the lunar surface and spent two and a half hours exploring, while Michael Collins remained in lunar orbit in the Command Module. Along with Collins and Aldrin, Armstrong was awarded the Presidential Medal of Freedom by President Richard Nixon; President Jimmy Carter presented Armstrong the Congressional Space Medal of Honor in 1978; -
Dolly the sheep was cloned
Dolly (5 July 1996 – 14 February 2003) was a female domestic sheep, and the first mammal to be cloned from an adult somatic cell, using the process of nuclear transfer.[2][3] She was cloned by Ian Wilmut, Keith Campbell and colleagues at the Roslin Institute, part of the University of Edinburgh, Scotland, and the biotechnology company PPL Therapeutics, based near Edinburgh. The funding for Dolly's cloning was provided by PPL Therapeutics and the Ministry of Agriculture.[4] She was born on 5 Jul. -
First Filming of Giant Squid
