Tag: social studies

The sky noise temperature is a measure of the thermal radiation from the sky, which is quite low at microwave frequencies, typically around 30 K.

• A single geostationary satellite is on a line of sight with about 40 percent of the earth's surface. 
  
• Three such satellites, each separated by 120 degrees of longitude, can provide coverage of the entire plane the north and south geographic poles.

Indian Railways is the primary mode of long-distance passenger transport in India, carrying millions of passengers daily.

The Lipulekh Pass in Uttarakhand is the traditional route used by pilgrims traveling to Mount Kailash and Mansarovar in Tibet.

Subscriber Trunk Dialing (STD) service was first introduced in India between Kanpur and Lucknow in 1960.

The Jawahar Tunnel is a major road tunnel located in Jammu and Kashmir, providing an all-weather connection through the Banihal Pass.

The National Highways Authority of India (NHAI) is the autonomous agency of the Government of India responsible for the development and maintenance of the National Highways network.

Road transport is the primary and most common mode used to connect villages and towns. Other options like airways or waterways are generally used for long-distance or specialized travel.

Waterways are considered the cheapest means of transportation because they do not require the construction of tracks or roads and can carry large volumes of goods efficiently.

Postal and telegraph services are categorized as personal communication because they are primarily used to send messages between individuals.