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The marine depositional environment comprises shallow-water marine environments, which are made up of the upper shoreface marine environment and lower Shore face marine depositional environments. The other types of marine environments are the deep-water marine and the reefs.
The NIST-F1 Cesium fountain clock is in Colorado. It is the standard for primary time and frequency in measuring time.
The NIST laboratories in Boulder, Colorado, developed the cesium fountain atomic clock NIST-F1, which serves as the country's primary time and frequency standard. NIST-F1 is a member of the global network of atomic clocks that establishes Coordinated Universal Time (UTC), the recognized global time.
The NIST-F1 is known as a fountain clock because it measures frequency and time intervals by using the atoms' fountain-like movement. Atomic clocks are the most precise means of measuring time intervals, or the amount of time that separates two events.
Atoms in the clocks leap from one energy level to another due to the precise frequency at which these clocks emit electromagnetic radiation, such as microwaves.
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<span>The four main forms of river erosion. Hydraulic action - the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure of the action weakens the banks and gradually wears it away.</span>
Answer:
Inner diameter: It is the diameter obtained by subtracting the thickness of the wall from the outer diameter of the object. It is the nominal diameter
While,
Drift diameter: It is the diameter of an object (pipe or bolt) which is the guaranteed diameter, less than the nominal diameter. It is usually 3.2 mm less than the nominal diameter
Explanation:
Inner diameter: It is the diameter obtained by subtracting the thickness of the wall from the outer diameter of the object. It is the nominal diameter
While,
Drift diameter: It is the diameter of an object (pipe or bolt) which is the guaranteed diameter, less than the nominal diameter. It is usually 3.2 mm less than the nominal diameter