Why is the emission of an alpha particle not particularly dangerous to people

√√√Alpha particles are generally considered safer than those that emit beta particles since they can be blocked very easily. They are least dangerous since they do not penetrate deeply into the skin. Clothing can even stop the penetration of alpha particles. However, they can be very dangerous when ingested or inhaled. √√√

Explanation:

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later