A raindrop falls on the earth with varying speeds depending on its size and weight. The gravity acts on the falling raindrop and the drop picks up speed. But due to air resistance, which is generally proportional to the velocity, the raindrops attain a terminal speed. A larger raindrop would fall much faster at 9…
The national flag of Paraguay has different emblems on the obverse and reverse sides. The flag has an emblem on the obverse side, which is the national coat of arms of Paraguay that comprises a yellow five-pointed star surrounded by a green wreath capped by the words REPUBLICA DEL PARAGUAY. The emblem on the reverse…
The Nile is one of the most interesting rivers of the world owing to the ancient Egyptian civilization, which is known as the ‘Gift of Nile’. The river originates in the well-watered regions of northeastern Africa and proceeds to drain northwards in the Mediterranean Sea. It is known as the world’s longest river. Although different…
Maggot therapy is used to heal wounds. In this method, maggots or larvae of flies are allowed to eat away the dead tissue in the wound, thereby clearing it quickly and healing it in the process. It is also known as Maggot Debridement Therapy (MDT). Wounds infested with maggots heal quickly and without spread of…
Chromosomes are considered the basic structures of heredity. They carry the codes that give rise to the expression of the characteristic features of an organism. Humans have 46 chromosomes. In 1997, a team of scientists J.J. Harrington, G.V. Bokkelen, R.W. Mays, K. Gustashaw, and H.F. Willard synthesized artificial chromosomes. These chromosomes are stable up to…
Andromeda, the galaxy closest to the Milky Way, is about 2.5 million light years away. To travel in space, we need to achieve the speed of light, which is about 3,00,000 kilometres per second. Even at that great speed, it will take us about 2 million years (not 2.5 million years due to an effect called…
