The depth of water under a vessel oan upWi be ascertained by the hydrophone, widely works on the reflection cl the sound of shn> s nroneller from the ocean bed. The fly flies at the rate cl over sft a secoas when leisnyoly sporting in the . air, hat il • bird gives chase he con incresae hia speed) to 35ft a second. " '
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/ODT19210319.2.90
Bibliographic details
Otago Daily Times, Issue 18198, 19 March 1921, Page 10
Word Count
61Untitled Otago Daily Times, Issue 18198, 19 March 1921, Page 10
Using This Item
Allied Press Ltd is the copyright owner for the Otago Daily Times. You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons New Zealand BY-NC-SA licence. This newspaper is not available for commercial use without the consent of Allied Press Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.