A Solar Stove of Tin Plate

(Page 2 of 2)

May/June 1977
By W.I. Gripenberg 
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The focus covers approximately the bottom (which always must be black) of an average sized cooking vessel. The bottom may be painted with lamp black or covered with soot.

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Although the mirror is very inaccurate, the focus, none the less, possesses remarkable power of setting fire to paper, wood, etc., which must be borne in mind when the mirror is set aside after use. It is inclined face downwards and in a northerly (southerly if south of equator) direction to about 45 degrees and so is also protected against dust.

In the beginning it is almost unavoidable that splotches on the mirror occur. These are removed with a wet sponge several times rinsed in pure water. Touch the mirror surface as seldom as possible.

The frame of the grate, if made of wood, must be protected by means of bright tin plate.

What is the main value of the apparatus described ?

It enables all those interested to get practical first hand knowledge of what solar power can do and they will in most cases be agreeably surprised.

Whether the average housewife will take easily to the solar stove is another matter. Necessity can do much, however.

That solar power is independent of social disturbances is perhaps not its least advantage. All other fuels are mainly provided by the grown-up male population, but the solar stove cart be tended by the children, a good thing in critical times.

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