“DIMENSIONLESS” ROD

If in a ballpoint pen out of toothpaste, and long rods at hand was not, take the short splice and its extension from the part used stem, cut off from the writing site. To the working rod wrote flawlessly, its tube should be communicated with the atmosphere. Therefore, carefully wash the extension after removing it the bulb.
 
N. RYZHOV, Ust-Kamenogorsk

Recommend to read

  • CATAMARAN — ROTOR-SAILCATAMARAN — ROTOR-SAIL
    I want to tell readers about the catamaran, the movement is carried out with the help of Magnus effect. The Magnus effect is that when an airflow of the rotating body formed a force...
  • GARDEN ON THE WINDOWSILLGARDEN ON THE WINDOWSILL
    Those who are engaged in home hydroponics and grows herbs on the windowsill, suggest of plastic containers of different kinds of domestic dry and liquid substances to make a convenient...