India's first satellite launched

Aryabhata was India's first satellite, named after the great Indian astronomer of the same name. It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Cosmos-3M launch vehicle.launch vehicle. It was built by the Indian Space Research Organization (ISRO) to gain experience in building and operating a satellite in space.

World Heritage Day

World Heritage Day is held on 18th of April every year. Its a day that represents the unique identities and cultures of the various countries and peoples of the world

World Hemophilia Day

World Hemophilia Day is an international observance  held annually on April 17 by the World Federation of Hemophilia  (WFH). It is awareness day awareness day for hemophilia and other bleeding disorders, which also serves to raise funds  and attract volunteers for the WFH. It was started in 1989; April 17 was chosen in honor of Frank Schnabel's birthday.

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Lara Dutta Bhupathi

Lara Dutta Bhupathi  was born 16 April 1978. She is an Indian Bollywood actress and Miss Universe 2000.

Wilbur Wright

Wilbur Wright, the co- inverter of airplane was born on April 16.1867and died on May30,1972.
 The Wright brothers  (Orville & Wilbur ) were two American brothers, inventors, and aviation pioneers who were credited with inventing and building the world's first successful airplane and making the first controlled, powered and sustained heavier-than-air human flight, on December 17, 1903.

First black Mayor of Chicago

Harold Lee Washington was born on April 15, 1922, he  was an American lawyer and politician who became the first African-American Mayor of Chicago serving from 1983 until his death on November 25, 1987.

Johannes Stark - Stark effect

Johannes Stark was born on April 15, 1874, he was a German physicist, and Physics Nobel Prize laureate who was closely involved with the Deutsche Physik movement under the Nazi regime. He died on 21 June 1957. He discovered the Stark effect. It is the shifting and splitting of spectral lines of atoms and molecules due to presence of an external static electric field.

 

1st Olympic games close at Athens

The 1896 Summer Olympics, officially known as the Games of the I Olympiad, was a multi-spot event  held in Athens, Greece, from April 6 to April 15, 1896. It was the first international Olympic Games held in the Modern era.

Titanic Sank

RMS Titanic was a British passenger liner that sank in the North Atlantic Ocean on 15 April 1912 ( Hit an iceberg 11:40 pm (ship's time) 14 April 1912 on her maiden voyage and sank 2h 40m later) after colliding with an iceberg during her maiden voyage from from Southampton, UK to New York City ( US ).

Vishu - Equal

"Vishu" in Sanskrit means "equal". 

Vishu is a Hindu festival celebrated in the Indian state of Kerala and in the Tulunadu region(Mangalore & Udupi districts) usually in the second week of April in  the Gregorian calender .It marks the new year in accordance with Kolla varsham the Malayalam calendar. In 2013 Vishu is celebrated on April 14.

Christiaan Huygens

Christiaan Huygens was born on April 14, 1629, he was a prominent Dutch mathematician, astronomer, physicist and horologist. His work included early telescopic studies elucidating the nature of the rings of Saturn and the discovery of its moon Titan, the invention of the pendulum clock and other investigations in timekeeping, and studies of both optics  and the centrifugal force.Huygens achieved note for his argument that light consists of waves,now known as the Huygens-Fresnel principles.

Donald James Leslie

Donald James Leslie was born on April 13, 1911. He created and manufactured the Leslie speaker that refined the sound of the Hammond organ and helped popularize electronic music. He died on September 2, 2004.

First human spaceflight launched

The first human spaceflight was launched by the Soviet Union on April 12,1961 as a part of the Vostok program , with Cosmonaut Yuri Gagarin aboard.

International Labour Organization established

The International Labour Organization (ILO) was created by the 1919 Peace Conference that followed World War I. Its original constitution, which formed part of the Treaty of Versailles, established it on 11 April 1919 as an autonomous organization associated with the League of Nations.

Arnold Orville Beckman

 

Arnold Orville Beckman was born on April 10, 1900. He was an American chemist who invented a pH meter (1934) for measuring acidity and alkalinity and the quartz spectrophotometer, an instrument which pioneered automatic chemical analysis. He died on May 18, 2004.

Constitution of Pakistan created

The Constitution of the Islamic Republic of Pakistan is the supreme law of the State of Pakistan. Drafted by the government of Zulfikar Ali Bhutto, with an additionally assistance from the country's opposition parties, it was approved by the legislative assembly on April 10 and ratified on 14 August 1973.

Facebook purchases Instagram

Facebook purchases Instagram, a photo sharing application, for $1 billion April 9,2012.

Boeing 737 - First flight

The Boeing 737 made its first flight on April 9, 1967. It is a short- to medium-range twin-engine narrow-body jet airliner. Originally developed as a shorter, lower-cost twin-engine airliner derived from Boeing's707 and 727, the 737 has developed into a family of nine passenger models with a capacity of 85 to 215 passengers.

 

First female Prime Minister of Britain passed away

Margaret Hilda Thatcher, Baroness Thatcher, the first woman to become British prime minister, has died at the age of 87 on April 8,2013. She was a British politician, the longest-serving (1979–1990) Prime Minister of UK of the 20th century, and the only woman ever to have held the post and she was called the "Iron Lady" for her personal and political toughness.. She was born on 13 October 1925. 

Discovery Island opened & closed

Discovery Island is an 11.5 acres island  in Bay Lake at Walt Disney World in Bay Lake, Florida .

The island opened as Treasure Island on April 8, 1974, as a place to observe wildlife, and was later renamed Discovery Island when it was recognized as a zoological park. It closed to the public on April 8, 1999, but continued to operate until July 9, 1999.

World Health Organization established

World Health Organization (WHO) is a specialized agency of the UN that is concerned with international public health. It was established on 7 April 1948, with headquarters in Geneva , Switzerland, and is a member of the United Nations Development Group.

World Health Day

World Health Day is celebrated on 7 April to mark the anniversary of the founding of WHO in 1948. Each year a theme is selected for World Health Day that highlights a priority area of public health concern in the world. The theme for 2013 is high blood pressure

A solo voyage round the world.

Indian Navy officer Lt Commander Abhilash Tomy, The first Indian who embarked on a non-stop solo circumnavigation of the globe on a sail boat. He completes his voyage on April 6,2013.
He was the first Indian and the second Asian after Japanese Minoru Saito to attain the feat.

 

 

1st Modern Olympic games officially opens in Athens

The 1896 Summer Olympics, officially known as the Games of the I Olympiad, was a multi-spot event  held in Athens, Greece, from April 6 to 15, 1896. It was the first international Olympic Games held in the Modern era.

National Maritime Day of India

National Maritime Day of India falls on April 5. First celebrated on 5th April, 1964, the day marks the journey of SS Loyalty, the first ship of the Scindia Steam Navigation Company, to the United Kingdom.

The first successful artificial heart implant

On April 4, 1969, Dr. Denton Cooley, a Houston heart surgeon, performed the first successful artificial heart implant on a human patient. The artificial heart was actually developed by Cooley's cross-town rival and former colleague, Dr. Michael DeBakey, and his team. Cooley's implant operation turned the rivalry with DeBakey into a full-fledged feud that lasted for the next 40 years. DeBakey considered it a betrayal and a theft of his technology.

Father of British Neurology

John Hughlings Jackson who is known as the father of British neurology was born April 4, 1835, who studies of epilepsy, speech defects, and nervous-system disorders arising from injury to the brain and spinal cord helped to define modern neurology. He died Oct. 7, 1911.

Luna 10 orbits Moon

The Luna 10 spacecraft was launched towards the Moon from an Earth orbiting platform on March 31, 1966. The spacecraft entered lunar orbit on April 3, 1966 and completed its first orbit 3 hours later.

John Paul II dies

John Paul II sometimes called Blessed John Paul or John Paul the Great, born 18 May 1920 and died 2 April 2005, reigned as Pope of the Roman Catholic Church from 1978 until his death in 2005. He was the second longest serving Pope in history and the first non Italian since 1523.

April Fools' Day

April Fools' Day is celebrated in many countries on April 1 every year. Sometimes referred to as All Fools' Day, it is widely recognized and celebrated as a day when people play practical jokes and hoaxes on each other.

Gmail was launched

Gmail is a free, advertising-supported email service provided by Google. Users may access Gmail as secure webmail, as well as via POP3 or IMAP4 protocols. Gmail was launched as an invitation-only beta release on April 1, 2004 and it became available to the general public on February 7, 2007.

The Eiffel Tower

The Eiffel Tower is one of the most famous monuments in the world (324 meters, 10,100 tonnes) it opens on 31 March 1889, it is dedicated in Paris in a ceremony presided over by Gustave Eiffel, the tower's designer, and attended by French Prime Minister Pierre Tirard, a handful of other dignitaries, and 200 construction workers.It was built for the World Fair, where it was the star attraction.

Invention of the phototransistor was announce

The invention of the phototransistor was announced on March 30,1950 ( Murray Hill NJ). This was a transistor operated by light rather than electric current, invented by Dr. John Northrup Shive of the Bell Telephone Laboratories at Murray Hill, N.J. It used a tiny chip of germanium, a semiconductor material, but only a single collector wire. The tip of this wire rests in a small dimple ground into one side of the germanium disk. At this point the germanium disk is only three thousandths of an inch thick. Light focussed on the opposite, un-dimpled side of the disk can control the flow of current in the wire, thus making a control device similar in function to a photo-electric cell.

The first spacecraft to reach the planet Mercury

Mariner 10 was an American robotic space probe launched by NASA  on November 3, 1973, to fly by the planets Mercury and Venus The First Mercury encounter took place on March 29, 1974, at a range of 703 kilometers (437 mi), passing on the shadow side.

The first seaplane

The first seaplane took off from water at Martinques, France. The pilot was Henri Fabre. The first autonomous flight by a hydroplane was made by the French engineer Henri Fabre on March 28, 1910. A seaplane is a powered fixed-wing aircraft capable of taking off  and landing (alighting) on water. Seaplanes that can also take off and land on airfields are a subclass called amphibian aircraft.

Wilhelm Rontgen

Wilhelm Conrad Röntgen was a German physicist, who Discovered X-rays or Rontgen rays (detected electromagnetic radiation in a wavelength range) on 8 November 1895, He was born on March 27, 1845. In honour of his accomplishments, the IUPAC  named element 111, Roentgenium, a very radioactive element with multiple unstable isotopes. He died on 10 February 1923.

World Theatre Day

Every year 27 March is celebrated as World Theatre Day ( Drama Day). It was established in 1961 by the International Theatre Institute.

The first person to visit Challenger Deep

Canadian Film maker, James Cameron, becomes the first person to visit Challenger Deep( The Challenger Deep is the deepest known point in the Earth,s sea floor hydrosphere, with a depth of 10,898 m (35,755 ft ) to 10,916 m (35,814 ft) by direct measurement from submersibles, and slightly more by sonar), the deepest point on Earth in over 50 years on March 26,2012.

Jim Lovell

James "Jim" Arthur Lovell, Jr. was born on March 25, 1928 and he is a former NASA astronaut and a retired captain in the US Navy , most famous as the commander of the Apollo 13  mission, which suffered a critical failure en route to the Moon but was brought back safely to Earth by the efforts of the crew and mission control. He is one of only 24 people to have flown to the Moon, the first of only three people to fly to the Moon twice, and the only one to have flown there twice without making a Landing . Lovell was also the first person to fly in space four times.

World Tuberculosis Day

World Tuberculosis Day, falling on March 24 each year, is designed to build public awareness about the global epidemic of tuberculosis  and efforts to eliminate the disease. March 24 commemorates the day in 1882 when Dr Robert Koch  astounded the scientific community by announcing that he had discovered the cause of tuberculosis, the TB bacillus.

World Meteorological Day

World Meteorological Day (WMD) is observed on 23rd March every year. It will be celebrated to commemorate the coming into force on 23rd March 1950 of the convention establishing the World Meteorological Organization (WMO).

 

The theme for this year(2013) is "Watching the weather to protect life and property-Celebrating 50 Years of World Weather Watch".

World Water Day

World Water Day has been observed on 22 March since 1993 when the United Nations General Assembly declared 22 March as World Day for Water.

International Day for the Elimination of Racial Discrimination

 

The International Day for the Elimination of Racial Discrimination is observed annually on 21 March. On that day, in 1960, police opened fire and killed 69 people at a peaceful demonstration in Sharpeville, South Africa, against the apartheid "pass laws". Proclaiming the Day in 1966, the General Assembly called on the international community to redouble its efforts to eliminate all forms of racial discrimination

World Forestry Day

Every year, 21 March is distinguished as World Forestry Day. The concept of having a World Forestry Day originated at the 23rd General Assembly of the European Confederation of Agriculture in 1971.

Isaac Newton's death anniversary

Sir Isaac Newton was an English physicist and mathematician who is widely regarded as one of the most influential scientists of all time and as a key figure in the scientific revolution. Born on December 25, 1642 and died on March 20, 1727.