Signals

signals are more important in the communication language, allow us to understand messages even in the absence of an operator.
here a few signals about aereostatic:

 warning signal

 This signal we can find in the Hamper of hot-air ballon  to show us we dont lean out hamper because could far here.

warning signal

warning signal

these signals we can find near burners to warn us dont touch and dont clean because  the motor may be hot and we burn.


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