토픽 개요

  • 공통

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    • Professor Seki retired from Hokkaido University in March, 2024.

  • Stokes diameter

    • 必要な物性値Required physical properties　液体の粘度liquid viscosity　液体の密度liquid density　沈降速度settling velocity

  • Andreasen Pipette


    • ピペット部Pipette part　空気穴air hole　コックcock　標線marked line　沈降距離を測定するための目盛Scale for measuring sedimentation distance　沈降距離sedimentation distance　沈降管sedimentation tube　セットした状態set state


  • Andreasen pipette method

    • 初濃度initial concentration　時間tの濃度concentration at time t　時間time

    • 等速で沈降Settling at constant velocity



    • t１の間にH以上沈む粒子の割合Percentage of particles that sink more than H during t1

    • t１－t２の間にH沈む粒子の割合Percentage of particles that sink H[m] between t1 and t2



    • 粒子直径particle diameter　残留率Residual rate

    • 頻度frequency