6 May
2014
6 May
'14
12:38
On 05/06/2014 07:32 AM, Per Jessen wrote:
Carlos E. R. wrote:
>Some early phones were purely acoustic for example.
wire-and-tin-cans ?
Air voice pipes in ships... Yep, good example too.
What about the sound powered phones used on ships? -- I may be crazy, but crazy is better than stupid. _ _... ..._ _ _._ ._ ..... ._.. ... .._ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org