what is earthquake magnitude

Earthqauke felt in Delhi, parts of north India, epicentre in Afghanistan

On Tuesday evening, earthquake tremors were detected in north India, including Delhi and surrounding areas, with many people flocking to open spaces as a precaution. According to the National Institute for Seismology, an earthquake with a magnitude of 6.6 on the Richter Scale struck 133 kilometres southeast of Fayzabad, Afghanistan,...