Talk:Through-the-earth mine communications
Latest comment: 8 months ago by Jidanni in topic Radio waves arriving in less than a minute
 | This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
| |||||||||||
 | It is requested that a photograph be included in this article to improve its quality.
The external tool WordPress Openverse may be able to locate suitable images on Flickr and other web sites. |
First paragraph edit
In the first sentence it is being said that the waves are low-frequency, the second one speaks of high-frequency signals. Is that a mistake or intentional? --Misericordia (talk) 06:20, 22 July 2015 (UTC)
Radio waves arriving in less than a minute edit
arriving in less than a minute
Electro-magnetic radiation speeds? Jidanni (talk) 14:29, 8 September 2023 (UTC)