Standard ruler
id:
standard-ruler-7-118428
title:
Standard ruler
text:
A standard ruler is an astronomical object for which the actual physical size is known. By measuring its angular size in the sky, one can use simple trigonometry to determine its distance from Earth. In simple terms, this is because objects of a fixed size appear smaller the further away they are. Measuring distances is of great importance in cosmology, as the relationship between the distance and redshift of an object can be used to measure the expansion rate and geometry of the Universe. Dista
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Standard_ruler
date created:
date modified:
2023-10-08T16:46:48Z
main entity:
{"identifier":"Q7598374","url":"https://www.wikidata.org/entity/Q7598374"}
image:
fields total:
13
integrity:
13