Events may be ordered in various ways (see here). Events ordered by time form a time line, or timeline, which is: 1. a linear representation of important events in the order in which they occurred. 2. a schedule; timetable. This may be generalized to the following definition: A time line is an ordering of events […]
We observe the sun and the moon traversing the sky. We know that the moon is objectively orbiting the earth but the sun is not. Where then is the sun that is observed traversing the sky in daily and annual cycles? It is not in 3D length. It is in 3D duration. Binary stars orbit
Relentation is the change in lenticity per unit of length. Average relentation is (u2 – u1)/Δs. If the second lenticity is faster than the first, the time interval is shorter and the lenticity is lower in value, which makes the relentation negative. Since decreased speed is the default for relentation , the default direction for
As pointed out here, average speed does not equal the magnitude of average velocity. But the instantaneous speed does equal the magnitude of instantaneous velocity. For example, the average velocity of one orbit is zero but the average speed is positive. Consider a section of a curve as below: The arc length of this section
In order to describe 3D time some new terms and new meanings for old terms have been introduced in this blog. The reasons for this are discussed in this post. It would be possible to add a prefix to terms already in use but that over-emphasizes the similarities – or opposition if a negative prefix
This post continues a series of problems (part 1 here, part 2 here) based on the website Free Solved Physics Problems, this time concentrating on dynamics problems for time-space corresponding to problems for space-time. Note: A newton is how much force is required to make a mass of one kilogram accelerate at a rate of
Impossible objects such as the Necker cube above are drawings that appear as two different objects, in this case either a box standing out toward the lower left or toward the upper right. It can be seen as one or the other but not both simultaneously. 3D space and 3D time are like this. One
Length measures space and duration measures time. Length is a scalar, which combined with direction describes 3D space. Duration is a scalar, which combined with direction describes 3D time. In relativity this might be considered trivial; length and duration may be converted into each other by multiplying or dividing by the speed of light. However,
Science makes no metaphysical claims but it is not unusual for scientists to make metaphysical claims, sometimes even in their scientific publications. That has confused the relationship between science and metaphysics. The philosophies of scientific realism and naturalism have further confused the relationship between science and metaphysics. As a Christian I must say that if
Space and time are usually confused with length and duration. That is, the physical units of measure that are typically used with space and time are confused with the pure abstractions of space and time. Let’s call space and time without physical units abstract space and time. Call space and time with physical units concrete
