Take the 2-minute tour ×  Will it be possible to fry eggs in
Sahara desert by just keeping them under the sun? If so, then
will the radiated eggs be any different? Or will we have to use
the solar cooking concept to some extent? What is the minimum
Intensity required and the temperature to achieve this? (With
and without solar cooker)  share|improve this question add
comment  2 Answers  up vote 3 down vote accepted  There are many
models of solar cookers relying on various phenomena.  Two that
come to mind are :    • greenhouse cooker : the cooker is a box
close by transparent material that will let in solar radiation
but will not let out radiation produced by the heated material
inside the box. So energy accumulates. Same as greenhouse for
growing food in winter or cold climate.    • mirror cooker : the
radiation from the sun is concentrated by several mirrors. You
can also get a parabolic mirror, but they are harder to come by,
though metallic foldable ones exist.  You could also use a lense
to concentrate