If the solar rays fall on the thermometer, mounted outside window frame, it heats up and shows… its temperature, not the ambient air.
To avoid this, protect the thermometer shade cover that can be cut from a suitable plate an opaque plastic (e.g. from a milk bottle) or foam containers: they will take over the sun’s rays.
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WITH A SAIL IN HAND
SKIING. You can go sailing on skis, not installing them on the mast (see "M-K", 1982, № 12), but simply holding it in his hands behind him. This sail has a diamond shape, stretched on...
PLUG-IN SHELF
To increase the useful volume of the cupboard can homemade extra shelf, shown in the figure.