New trends in physics teaching, v.4; The ... - unesdoc - Unesco

A solar cooker
c. Fill the box in (b) with crumpled newspapers. Compress.
d. Cover the box with the card sheet of (a) and secure with tape.
e. Paste aluminium foil outside the box (except the front side with the handle). (See figure 3.)
aluminium foil
\
Figure 3.
D. Making the reflector
a. Construct a triangular stand out of the pieces of cardboard using dimensions in figure 4.
b. Paste or tape the aluminium foil on side of the triangular stand. Do not use crumpled
aluminium foil. (See figure 4.)
c. Insert the piece of wood at the base of the stand.
Q.4 What is the function of the reflector in the cooker?
aluminium foil
k- 58cm-/
Figure 4.
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