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Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Particle Charge ♦ Prominent Technique ♦ Particle Surface Charge ♦ Colloidal Particle Surface ♦ Indonesian Physic Book ♦ Phase Shift ♦ Several Technique ♦ Laser Doppler Electrophoresis ♦ Phase Analysis Light Scattering ♦ Doppler Effect ♦ Scattered Light ♦ Sophisticated Technique ♦ Physic Student ♦ Frequency Beat ♦ Basic Technique ♦ Known Ammeter
Abstract Abstract-- A device being capable of measuring particle surface charge has not been found yet. Therefore, no one is able to measure particle charge directly. A well known ammeter is only able to measure electric current, but not charge. Most physics students and teachers have not understood how to determine the particle surface charge. Fortunately, there are several techniques which can be used to determine the particle charge, yet they have not been incorporated into Indonesian physics books and curriculum. The basic technique to determine the particle surface charge is called electrophoresis. This technique was then developed to become Laser Doppler Electrophoresis (LDE) by exploring the fact that the frequency beat of the Doppler Effect is related to the velocity of the particle which was then used to determine the particle charge. On the other hand, a more sophisticated technique called Phase Analysis Light Scattering (PALS) explores the relationship between phase shift of the scattered light and the velocity of the particle to determine particle charge. The above three techniques are summarized in this paper.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article