From time immemorial came to us GRID (as defined by the famous Russian language dictionary by V. dal — “all non-continuous thing with skvoznoy, allowing spans”) and a SIEVE (“drum with mesh bottom for proshivki what the large sieve: a sort of box with a perforated bottom” — ibid.). Entering as an integral part of many machines and mechanisms, they do not seem to lose its relevance in its original form. Moreover, complement each other, gaining new qualities, as it is convincingly shown a thematic compilation of submissions received from Ukraine.
Windmills vs birds and moles. We have cottages, and in villages was a big crop of cherries. But flocks of starlings raiding is not yet ripe fruit. People saved them as best they could: hung on the branches of the banks, clung to the bottle, strengthened mounts and strips of polyethylene. I decided to scare away the birds hoisted on a cherry tree big windmill.
In any garden, each cottage or country house needs water, water in such places, as a rule, no. Dig a well if the water is deep, time-consuming and expensive. To arrange it is advisable when there are a-abstraction, i.e. in that case the well will benefit many people. Most owners want to have a small but private underground life-giving source and so does the casing of the well, with simple equipment, on their own. 