749 students
An electric dipole is a separation of positive and negative charges. The simplest example of...
free
644 students
A rod or a bar of uniform cross-section, circular or rectangular, the length of which...
free
441 students
Forty thousand years ago in Europe, homo sapiens (or ‘clever man’) was not the only...
free
497 students
Antonie van Leeuwenhoek lived for most of his long life (1632 to 1723) in the...
free
389 students
People have tried to count time for about ten thousand years. The Abbasid scholar, Abu...
free
483 students
Bierce is best remembered for his ‘Devil’s Dictionary’, which was a cynical and very funny...
free
756 students
The reign of Harun ur-Rashid as Caliph of Islam from 786 to 809 saw an...
free
186 students
Environmental science is the systematic study of our environment- natural and human, and our proper...
free
663 students
In 1757, Lord Clive, a British general, won the Battle of Plassey, and brought India...
free
269 students
Ohm's Law states that: At a constant temperature the potential difference (voltage) across an ideal...
free
329 students
Work: In physics, a force is said to do work if, when acting, there is...
free
551 students
Environmental science is the systematic study of our environment- natural and human, and our proper...
free