The Forces of Gravity: From Everyday Effects to the Mysteries of Black Holes

The video explores the concept of forces, highlighting the electric force between an electron and proton as significantly stronger than gravity. It explains gravity's effect on human height, causing a temporary reduction during the day. The video also introduces black holes, describing their immense gravitational pull and the surprising mass of primordial black holes despite their tiny size.

Describe what black holes are and their unique properties.

What is the size of primordial black holes and how does it compare to their mass?