Old, leaky canister can still serve as a spray for watering garden lands: just need to neverlet it along the contour of a series of holes with a diameter of 3… 5 mm.
Recommend to read
A simple voltmeter
measuring constant voltage value of 100 V. It is produced by the bridge circuit for the transistors T1 and T2. In one diagonal bridge included a measuring device in the other power...
THROUGH SWAMPS AND OBSTACLES
The letter came from the Bashkir village of chishma from the subscriber of our magazine Damir Danova. Damir talks about his neighbor — the avtokonstruktor-enthusiast Alexei Maskaev,...
