
A simple feeder for small birds can be done literally in minutes, using a tin can and a stick of wood or a suitable diameter of the branch.
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The Yak-18
Initial training aircraft Yak-18 was based on UT-2. Its first flight took place on may 6, 1946 (test pilot G. S. Klimushkin), and the second, with the more powerful M-11FR — may 17,...
CONTAINER VELOCIMETRY
Hobbyists and modelers know how hard it is without a special container to connect several dry cells "373" in the battery. Reliable and easy temporary container is obtained from the...