These scales account for the distance between the earthquake and the recording seismometer so that the calculated magnitude should be about the same no matter where it is measured. Another scale is ...

The modern scale measures a quantity called “moment magnitude” (denoted as Mw), which is based on variables such as the area ...

As per the National Centre of Seismology, a 4.0 magnitude earthquake on the Richter scale struck the region with its epicentre in New Delhi. The Read More ...