Talk:1 Nanometre

This article was nominated for deletion. Please review the prior discussions if you are considering re-nomination:

Keep and refine to specific relevant sections, 2020 June 3, see discussion.
Merge to Orders of magnitude (length), 4 July 2016, see discussion.
No Consensus, 13 January 2013, see discussion.
Keep, 18 March 2008, see discussion.

This article is within the scope of WikiProject Measurement, a project which is currently considered to be defunct.MeasurementWikipedia:WikiProject MeasurementTemplate:WikiProject MeasurementMeasurement articles

Lists Low‑importance

	This redirect is within the scope of WikiProject Lists, an attempt to structure and organize all list pages on Wikipedia. If you wish to help, please visit the project page, where you can join the project and/or contribute to the discussion.ListsWikipedia:WikiProject ListsTemplate:WikiProject ListsList articles
Low	This redirect has been rated as Low-importance on the project's importance scale.

give the ratio of velocities of light rays of wavwlength 400nm and 800nm