this tin little speed boat has been an Indian
icon for decades. it cost about 20 Rs and is available during festival time. you can
see there is an inlet pipe, there is an outlet pipe and this is small boiler. you can put
a roof on top. then you can see the inlet and the outlet more clearly. this is the under
belly of the boat. you need to take a dropper, fill it with water and fill water in one of
the tubes so that the boiler is filled with water. then take a small cup with the wax
and a wick. light the lamp and with the help of an adult put it right under the boiler.
after sometime the water would get warm, hot and steam would diffuse and the boat will
start with a phat phat noise. it will start rotating round and round in circles. now what
is happening is that the water is being sucked in by one pipe and steam is being ejected
from other pipe giving the boat its thrust.