Pouring solutions of chemicals in the bottle, Amateurs are plastic or glass funnels. First trouble do not deliver: special ribs on the outer surface do not allow them to fit snugly to the necks, and displaced fluid with the air out of the bottles without interference. Edge for glass can be formed by bending, as shown in the figure, the cut copper wire Ø 1 mm.
A. KAMALOV, Obninsk, Kaluga region
Recommend to read
FIRST LED, THEN MOTO
That recumbent healthy, I think, nobody will argue. Well, for fans of technical creativity it doubly useful as it allows you to gain invaluable experience before the greater...
FLYING ON THE SIDE
Model of a catamaran-class "P" with a sail-wing. Few people remember that the apparatus used for movements the aerodynamic forces, was created more than five thousand years ago. It was a...
