👉 In physics, a subatomic particle is a particle that has no mass but can exist at very small scales. These particles are fundamental to the understanding of quantum mechanics and have been studied extensively in various fields such as chemistry, biology, and cosmology. The concept of a subatomic particle was first proposed by Albert Einstein in his famous theory of general relativity in 1915. Subatomic particles can exist at very small scales, which is why they are often referred to as "sub
