Hot air balloon / sky lantern / glow lantern

HOT AIR BALLOON

These small hot air balloons are referred to as sky lanterns or glow lanterns

The balloons are simple and rely on the principles of increasing the air temperature inside the envelope making it lighter than the surrounding (ambient) air. The balloon floats because of the buoyant force exerted on it. This force is the same force that acts on objects when they are in water and is described by Archimedes' principle.

The balloons are made of lightweight, flame retardant paper and use a small fire source made of paraffin wax to provide hot air.

USES:

Can be used as decorations and a source of entertainment during special occasions such as birthdays, weddings, parties, farewells, etc.
As a model to teach children basics of flight
The balloons can also be modified in order to carry out atmospheric analysis for pressure, humidity, composition, etc.

Here is a small video clip of the hot air balloon rising..

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