If the flashlight is to strengthen the tin bracket with a motor from a child’s toy, the axis of which is planted miniature celluloid propeller, and connect the motor to the battery of a flashlight, get a portable fan, which could become a mechanical fan and refresh face in heat.
Recommend to read
VALVE FROM THE FLOOD
There are cases of disconnection of water in homes for a long time not only for repair of water system, but also for its economy. Such breaks is fraught with the danger of flooding the...
“SPANISH” BOMBER TUPOLEV
A new generation of bombers-the monoplanes, which differs from the preceding higher performance characteristics, appeared in many countries in the period between 1932 and 1935. As a...