[D8822AAB], Letter from John Blair to Thomas Alva Edison, February 20th, 1888
https://edisondigital.rutgers.edu/document/D8822AAB
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Metadata
- Title
- [D8822AAB], Letter from John Blair to Thomas Alva Edison, February 20th, 1888
- Editor's Notes
- "Learning that you have been experimeting with a view of communicating between ships at a distance by aid of telegraphy. I send you the results of an experiment by me that may be of use to you. ### I made a horn like your Megaphone but differing in the [unclear] as described and placing it in water. Could by its aid here a man speak "a mile distant, or a blow struck by any oar upon the water" can be heard [unclear] miles away. ### I think you can understand the idea as described; and know how to apply it. ### This HydroMegaphone may be of use to assist you in the direction sought. And if so you are welcome to it."
- Author
- Blair, John
- Recipient
- Edison, Thomas Alva
- Date
- 1888-02-20
- Type
- Letter
- Folder ID
- D8822-F
- Microfilm ID
- 122:692
- Document ID
- D8822AAB
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 122