Tuesday, 12 September 2023

Holmes signal

 Have you ever heard about Holmes signal.what do you think that it is ?

It is used by sailors as a helping hand for them in a very misty situation .

This system holds a perforated box📦 , which holds calcium phosphide and calcium carbride


This calcium phosphide and carbide reacts with sea water to form acetylene and phosphine which ignite spontaneously to form a emergency lighting🔥🔥.

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