Historic Duration

From threeten

The concept of a duration of time. Duration is the scientific expression of time. In science, the standard unit is the second.

An instant is a duration beyond the epoch point.

Need to decide on the name of the concept (and thus probably the name of the interface/class)

• Duration

Need to decide the precision

• Milliseconds - compatibility with existing Java SE
• Nanoseconds - compatibility with databases
• Unlimited - needs Big Decimal, which is slow and ugly

Other suggested definition: The length of a segment of the Timeline (a scalar value, expressed in e.g. nanoseconds).