The countries receiving radiant energy through out the year, make use of Solar Heating to cook food. The Solar Cooker functions using the Black Body Effect, i.e., a Black Body absorbs 98% of the energy incident on it.
These cookers are painted black on the outside and inside. The food to be cooked is placed in metal boxes painted black on the outside but polished and clean on the inside. The food is put in these, and then placed inside the cooker. The cooker has a glass lid – to create the greenhouse effect inside the cooker – the closing lid of the cooker is the outer most and fitted with a mirror which is fixed at an angle, facing the sun to direct the solar heating into the cooker.
The Solar Heating or the solar lighting, cooks the vegetables and lentils slowly over the day and are ready to eat by late afternoon.
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