History of the day March 20

Year

Events

Since 2010 Every Year

WORLD SPARROW DAY  World Sparrow Day is observed on March 20th of every year. It was first observed in 2010 in various countries across the World. It was an initiative of the Nature Forever Society of India with an objective to raise awareness about house sparrows and other common birds to urban environment. Objective of World Sparrow Day is also to bring attention of societies towards threat to population of house sparrows and other common birds.

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India's first Nuclear Missile 

Nowruz - Iranian New Year

NOWRUZ - IRANIAN NEW YEAR ALSO KNOWN AS PERSIAN NEW YEAR USUALLY OCCURS ON MARCH 21

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India's first Nuclear Missile 

History of the day March 15

Year

Events

1877

FIRST OFFICIAL CRICKET TEST MATCH WAS PLAYED BETWEEN AUSTRALIAN AND ENGLAND TEAMS  On March 15 in 1877, the first official Cricket Test Match was played between Australian and England Cricket teams at Melbourne Cricket Ground (MCG), which Australian Cricket team won by 45 runs. This Cricket Match was played for four days and ended on March 19. Charles Bannerman, batsman of Australian Cricket Team made first ever run with a single in this format. Allen Hill of England Cricket Team took first ever wicket of Nat Thomson in this format of Cricket Match. In 2017, first Cricket Test Match completed 140 years.

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India's first Nuclear Missile 

Thermodynamic System and Types of Thermodynamic Systems

     A thermodynamic system is referred to a quantity of matter or a volume in space in which one or more thermodynamic processes take place in reference to its surroundings and is used for their study and analysis. System surroundings are referred to everything outside system of system. A thermodynamic system is separated from its surroundings by the boundary. The boundary may be either real or imaginary and fixed or moving. A system, its boundary and its surrounding together form a universe.

TYPES OF THERMODYNAMIC SYSTEMS

There are three types of thermodynamic systems given below ;

1. Open System
2. Closed System, &
3. Isolated System

Open Thermodynamic System

A thermodynamic system in which both mass and energy are allowed to transfer across system boundary is referred to as an open thermodynamic system. There may be flow of matter as well as energy into or out of the system. An example of open system is steam turbine where fluid or steam enters the turbine at high temperature & pressure and leaves turbine after thermodynamic process at low temperature and pressure. 

Closed Thermodynamic System

A thermodynamic system in which only energy is allowed to transfer across the system boundary is referred to as a closed system. There may be flow of energy into or out of the system but no matter flow takes place across the system boundary. This is the system with fixed mass.

Isolated Thermodynamic System

A thermodynamic system in which neither mass nor energy is allowed to transfer across the system boundary is referred to as Isolated System. There is no interaction between system and its surroundings. Practically, these type of systems do not exist.

SLOW MOTION BULLETS : HOW DO GUNS WORK ?

Slow Motion Bullets: How Do Guns Work?
Guns go off in the blink of an eye. Let's see what goes on as a gun is fired off IN SLOW MOTION! For more videos, keep coming back to Discovery News!
Posted by Discovery News on Sunday, May 3, 2015

The Baily Bridge - World's Highest Bridge

The Baily Bridge, located in Himalayan Mountains between the Dras river & the Suru River in Ladakh Valley in the State of Jammu & Kashmir, is the highest bridge in the World. It was built by the Indian Army in 1982 at an altitude of 5602 meters above sea level. It is a 30 feet long bridge.


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India's first Nuclear-powered submarine

History of the Day April 4

Year

Events

2012

I.N.S. CHAKRA - NUCLEAR POWERED SUBMARINE OF INDIA  I.N.S. Chakra (Akula-II Class) inducted into Indian Navy. I.N.S. Chakra is the Nuclear-powered Attack Submarine. India has obtained I.N.S. Chakra from Russia on 10 years lease since April 2012. As of now, I.N.S. Chakra is the only fully operation Nuclear-powered Submarine that Indian Navy has. Soon India's indigenous Nuclear-powered submarine I.N.S. will also be inducted into Indian Navy. I.N.S. Arihant is a 6000 tonnes vessel which has a 83 MW pressurized light water nuclear reactor to meet submarine's power requirments. I.N.S. Arihant once inducted into Indian Army will be capable of firing nuclear weapons and India will get capability of firing nuclear weapons from land, air & sea.

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India's first Nuclear Missile