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Introduction to Chitwan National Park

National Parks, Conservation Area and Wildlife Reserves of Nepal Chapter-1 Chitwan national Park Chitwan National Park, t...
Prevost Theory of heat Exchange

According to Prevost, a body emits heat radiations at all temperatures which is independent of surroundings but the quantity of heat ...
Propagation of sound - Wave Nature of Sound

Propagation of sound As light, sound travels in the form of wave. But sound waves travels or propagates in the form of longitudinal wave....
Alexander Oparin-Theory of the origin of life

Born : March 2, 1894 Citizenship : Soviet Union Died : 21-April, 1980 Nationality : Russian Institutions : Moscow Sta...
Electrons and Photons- Short Question-Answers

Electrons and Photons- Short Question-Answers 1. What is threshold frequency? Ans. There is a certain minimum frequency of radiation ...
General Instructions to the Students

Biology 1. Need of practical for the science students For the science students, practical is very important as they can verify any fa...
Demography

The term Demography is coined from two Greek words Demos, meaning "People" and Graphien meaning "to draw, that is, deserib...
Concept of Quality of Life

Introduction: Human beings have equal desire and ambition to make life prosperous. The final and long term goal of population education i...
Concept of Heat and Temperature

Kelvin, a British Physicist, was born in Belfast in 1824. He worked in the field of thermodynamics. He restated the second law of th...
Distribution of Population by Ecological Belts and Development Regions.

Distribution of Population Distribution of population refers to the living of the people on the basis of physical feature, geographical...