Find out about electromagnetic waves. What are their characteristics and sources. Learn the mechanism of propagation of EM waves along with a few examples.| Science Facts
What is radioactive or nuclear decay. What happens during it. What are its kinds. Learn its law, equation & applications, with solved problems.| Science Facts
What is an atom in chemistry, who discovered it, & what are they made of: its facts, meaning, size, structure & parts described with examples & picture| Science Facts