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A Coulter counter [1] [2] is an apparatus for counting and sizing particles suspended in electrolytes. The Coulter counter is the commercial term for the technique known as resistive pulse sensing or electrical zone sensing. The apparatus is based on the Coulter principle named after its inventor, Wallace H. Coulter.
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
A Coulter counter is an apparatus for counting and sizing particles suspended in electrolytes. It is typically used for cellular particles. It is typically used for cellular particles. The Coulter principle, and the Coulter counter that is based on it, is the commercial term for the technique known as resistive pulse sensing or electrical zone ...
A Coulter counter is an appliance that can count cells as well as measure their volume. It is based on the fact that cells show great electrical resistance; in other words, they conduct almost no electricity. In a Coulter counter the cells, swimming in a solution that conducts electricity, are sucked one by one into a tiny gap.
Wallace H. Coulter (February 17, 1913 – August 7, 1998) was an American electrical engineer, inventor, and businessman.The best known of his 85 patents is the Coulter principle, which provides a method for counting and sizing microscopic particles suspended in fluid.
7th-century coulter used in ploughing. Its earliest design consisted of a knife-like blade. [3] [1] In 2011 an early medieval coulter was excavated from a site in Kent, England. [4] [5] Coulters using a flat rotating disc began being used c. 1900. [6] [1] Its advantage was a smoothly cut bank, and it sliced plant debris to the width of the ...
According to Ann Coulter herself, it's a "no" -- but a gentle one. The controversial conservative has officially responded to rumors that she's in a longtime relationship with Jimmie Walker, ...
Particle size analysis, particle size measurement, or simply particle sizing, is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample.