When working with bulk materials shovel is indispensable, as it improves productivity due to the increased volume of its “bayonet”. This advantage can be used and the collection of roots. And the shovel does not hurt them, its front edge is sufficient to attach a section of rubber hose.
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DOUBLE-BUTTON
The belt on the buttons unbuttoned even faster than secures, even from mild random efforts. However, to abandon the buttons and replace them with, for example, hooks is not necessary. A...
A ROTOR SAIL ON A CATAMARAN
I would like to tell the readers of the magazine about a catamaran whose movement was achieved using the Magnus effect.
The Magnus effect consists in the fact that when a rotating body...
