3 ms·

What interest me in this context is that when you say in fraction of a second then do you mean the second how we sense it or is this second somehow longer becau

• pdonis 7y ago
  > do you mean the second how we sense it I mean it in the sense of an SI second, which is defined in terms of a certain number of cycles of light of a certain frequency that comes from a certain energy level transition in cesium atoms. > is this second somehow longer because of the huge gravity? No. The concept of "gravitational time dilation" is not applicable in the circumstances we are talking about. > was there gravity at all? "Gravity" is an ambiguous term. On average, the universe is homogeneous and isotropic (and was even more so in the very early universe), which means that on average the matter in the universe exerts no net gravitational force on any particular piece of matter, such as us here on Earth or a tiny parcel of matter in the early universe. In that sense there is "no gravity" in a homogeneous, isotropic universe. However, the presence of matter and energy certainly affects the spacetime geometry. In that sense, there is "gravity" present.