More on this book
Community
Kindle Notes & Highlights
by
Robert Lanza
Read between
February 23 - September 10, 2023
realms. To review these three spatial realms via basic geometry, lines are one-dimensional; flat shapes like squares and triangles have two dimensions; and a solid form like a sphere or cube has three. However, an actual object—a sphere like an orange, say—requires an additional dimension because it persists and perhaps even changes. This means that something “else” besides its spatial coordinates is part of its existence, and we call this “time.”
Coordinate time does not move; each moment is a point existing within spacetime.
But in our everyday experience, “time” is anything but static—it is an unstoppable flow. When most people talk about time, this is the time they mean: a sequence of events that changes from moment to moment in our awareness.
sitting in the middle of a train while your friend is standing on the embankment outside, watching the train go roaring by. If lightning strikes on both ends of the train just as the train’s midpoint is passing the embankment, your friend would see the two bolts of lightning strike at the same time, because both strikes are the same distance from him, the observer. If asked, he would say the strikes happened simultaneously—an accurate statement of his perception of time. However, from your perspective, sitting in the middle of the train as it moves forward, you will see the lightning that
...more
an accurate statement of your perception of time. In
Einstein showed that time actually moves differently for someone in motion than for someone at rest, and it only exists relative to each observer. In the case of the train and the lightning, neither your observation nor your friend’s is “more right”—there is no objective viewpoint, just two different perceptions.
relationships, whose physical logic is contained in the neurocircuitry of the brain.
they also explain why time and space—indeed, the properties of matter itself—are relative to the observer. In the end, life is motion
But if the arrow is in one specific place, it follows that it must momentarily be at rest. Logically, then, as the arrow flies from bow to target, what is occurring is not motion per se, but a series of separate static events. The forward motion of time, embodied by the movement of an arrow, is not a feature of the external world but a projection of something within us that ties together things we are observing.
process, while randomization requires no elucidation
novel The Other Side of Time, by Keith Laumer.)
Fig. 13.1 An electromagnetic wave, propagating in the direction +z through a vacuum. The electric field (bold arrows) oscillates in the ±x-direction, and the magnetic field (gray arrows) oscillates in phase with the electric field, but in the ±y-direction.