Light-year

Before the 1976 definition, the IAU (1964) System of Astronomical Constants, used from 1968 to 1983, defined the light-year using the tropical year and a measured speed of light.

The IAU (1964) System of Astronomical Constants, which included a different definition of the light-year, came into use in 1968.

From: Light-year

(see previous sentance)

Subject :

Light-year

IAU

Action :

included

came

Object :

IAU

Date :

1968

Location:

Light-year

IAU

Collection

Light-year

IAU

Details:

Next Sentance Add Another Tag

61263

`whenYear` <'3000'

AND `whenYear`= ' 1968 '

AND `whatEventType`<>'took a picture'

AND

( `whoCharName` = 'Light-year ' or `whoRel` = 'Light-year')

ORDER BY `whenYear` ASC, `whenMonth` ASC , `whenDay` ASC,`eventSig` DESC

LIMIT

0

,

100

Tagging Directions

For the most part we want to isolate the subject, action and object of each sentence along with a data and location of this event. For example, in the sentence “Albert Einstein published General Theory of Relativity on 3/20/1916” the subject is Einstein the action is published, and object is the Theory of relativity. Here are a few examples of what we tagged already. One can only imagine how many other ways we can find this information written in.

The gray boxes below give you suggesting on how to populate each input. Name, event and year are mandatory other parts are optional but encouraged.

Object and location might be optional depending on the event. Most human sentences usually describe several events or at least several objects or subjects. Feel free to add another tag to the same sentence. Not every sentence will have a meaningful event that is described in it.

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Please tag the following sentance into Histolines event format

The IAU (1964) System of Astronomical Constants, which included a different definition of the light-year, came into use in 1968.

Histolines needs your help building awesome timelines!