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A shaker is a piece of laboratory equipment used to mix, blend, or agitate substances in a tube or flask by shaking them. It is mainly used in the fields of chemistry and biology . A shaker contains an oscillating board that is used to place the flasks, beakers , or test tubes.
These frequencies are measured as modal frequencies. Usually a load cell is placed between the shaker and the structure to obtain the excitation force. For large civil engineering structures much larger shakers are used, which can have a mass of 100 kg and above, and are able to apply a force of many hundreds of newtons. Several types of ...
Dunkerley's method [1] [2] is used in mechanical engineering to determine the critical speed of a shaft-rotor system. ... (RPM) equivalent as follows:
Mixing of liquids occurs frequently in process engineering. The nature of liquids to blend determines the equipment used. Single-phase blending tends to involve low-shear, high-flow mixers to cause liquid engulfment, while multi-phase mixing generally requires the use of high-shear, low-flow mixers to create droplets of one liquid in laminar, turbulent or transitional flow regimes, depending ...
A machine called a paint shaker can be used to achieve either effect by shaking the can vigorously for a few minutes. A wide variety of paint shakers are available. In the 1980s, a home-use version was sold that attached to an electric drill, using vibrations from the drill to mix the paint. [13]
Specific speed N s, is used to characterize turbomachinery speed. [1] Common commercial and industrial practices use dimensioned versions which are of equal utility. Specific speed is most commonly used in pump applications to define the suction specific speed —a quasi non-dimensional number that categorizes pump impellers as to their type and proportions.