World Radio Day: 13th February

World Radio Day (WRD) is observed globally on 13th February to remember the unique power of radio that touches lives and bring people together across every corner of the globe.

Significance of Day: It marks global celebration of radio as a forum for information and entertainment that helps to bridge communication gap for remote communities and empowering people.

Gravitational Waves

Great excitement rippled through the physics world as astronomers announced that their new US observatory has detected a gravitational wave, a phenomenon Albert Einstein predicted a century ago in his theory of general relativity.

 

What are gravitational waves?

• Gravitational waves are extremely faint ripples in the fabric of space and time that come from some of the most violent events in the universe. In this case, it is from the merger of two black holes 1.3 billion light-years away. The way to think of this is to imagine a mesh net and visualize pulling on its ends. Those kinks are sort of like what a gravitational wave does.

International Solar Aliiance

India and France have launched International Solar Alliance (ISA) at the Conference of Parties (CoP21) Climate Conference in Paris, France. It was jointly by Prime Minister Narendra Modi and French President Francois Hollande in presence UN General Secretary Ban Ki-moon.

This alliance includes about 121 countries that supported the declaration on Solar Alliance.

It would play important role in achieving the objective of keeping global warming below 2 degree Celsius.

Scheduled Castes and the Scheduled Tribes (Prevention of Atrocities) Amendment Act, 2015

The Amendment Act replaces the Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Amendment Ordinance, 2014.

The New act seeks to amend the Scheduled Castes and the Scheduled Tribes (Prevention of Atrocities) Act, 1989. 

The Act prohibits the commission of offences against members of the Scheduled Castes and Scheduled Tribes (SCs and STs) and establishes special courts for the trial of such offences and the rehabilitation of victims.

Tableau of Republic Day Parade

Study of this tableau is helpful in solving questions of art and culture in preliminary exam.

Click on the Images For Clear and Readable content.