Have you ever wondered how we measure gas flow through challenging environments such as natural gas pipelines? Meet the Big Blue Ball! This giant spherical vessel uses a technique known as acoustic thermometry to quickly and accurately calculate the average gas temperature, thereby helping calibrate flowmeters for large-scale operations. Why does it matter? Trillions of cubic feet of natural gas are imported and exported from the U.S every year with flowmeters acting as the cash register. Accura
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We go with the flow at NIST – the very, very small flow. Researchers in the optofluidics lab shown here can measure nano- and micro-scale flows of liquids more accurately and at shorter time increments than anywhere else in the world. These flows can be extremely slow – around 1 nanoliter per minute. At this rate it would take a can of soda almost a century to drain through a hole the size of a human hair! The researchers can measure these tiny flows with miniscule uncertainty using a NIST paten
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Experiment conducted by NIST with the initial vent openings being only the 2nd floor window. Fire growth and smoke development are shown. After the fire becomes ventilation limited the front door is opened to show the change in flow path and fire dynamics. | Fire Safety Research Institute
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