It is phenomena. Answer 2 Phenomena is the plural of phenomenon. But a lot of people don't realise that. In the same way as criterion is the singular pf criteria. You hear people say things like 'the...
well not entirely sure but i know that the forth quantum number accounts for the electron spin positive or negative and you can tell if the metal is ferromagnetic or paramagnetic if the spins are...
In astronomy exotic phenomena are things like:
Gamma-ray bursts (GRBs) - extremely energetic bursts of photons generally thought to be caused by supernovaeNova and Supernova - 'exploding' stars that...