“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

  • SPORTS EQUIPMENT OF CHAMPIONSSPORTS EQUIPMENT OF CHAMPIONS
    Before talking about the first rocket model, a few words about its designer — Alexander Tarasov. He lives in a small Siberian town of Yugorsk (Tyumen oblast), employs a facilitator Fock...
  • WINDMILL-A MACHINEWINDMILL-A MACHINE
    The editors constantly receive letters asking to tell about wind engines. In this publication we offer to your attention the device, published in the journal "Earmaster". This...