Inside Bob Lazar’s Craft As a Physicist
Second as unit of time is local to an area: it is a time interval at which a light beam covers a distance ≈ 3×10⁸ meters in this area. Or to be more specific / more local, nanosecond is a time interval at which a light beam covers a distance ≈ 0.3 meters in the area.
In [1] I showed that gravity is determined by time dilation (aka time speed, aka local second) alone! Gravitational acceleration (usually denoted by letter g, and near the Earth g = 9.8 m/sec²) is tied to time dilation D by this simple formula:
where c ≈ 3×10⁸ m/sec is the speed of light constant, and ' is the derivative (by location, which will become clearer in the examples below). Physical meaning of D is time dilation, which determines the speed of time, for example:
Let’s see how time dilation changes near the Earth for us: how differently time flows at our feet, at our waist, and at our head level:
