light
what is the speed of light?
Write down any two elementary particles that have nearly infinite life time?
Watt: W (after J. Watt, 1736-1819): The derived SI unit of power, stated as a power of 1 J acting over the period of 1 s; it therefore has the units of J/s.
Briefly list out the name of all the branches of physics?
Causality principle: The principle which cause must always precede effect. More properly, when an event A ("the cause") somehow persuades an event B ("the effect") that take
Gauss' law (K.F. Gauss): The electric flux via a closed surface is proportional to the arithmetical sum of electric charges contained in that closed surface; in its differential form, div E = rho,
Planck radiation law: The law which explained blackbody radiation better than its precursor, therefore resolving the ultraviolet catastrophe. This is based on the supposition that electromagnetic radiation is quantized. Q : Describe the applications of the nmr Briefly describe the applications of the nmr spectroscopy?
Briefly describe the applications of the nmr spectroscopy?
What is the reason that the tea kettle sing? Briefly state the reason.
Mach number (E. Mach): It is the ratio of the speed of an object in a specified medium to the speed of sound in that medium.
Coanda effect: The effect which points out that a fluid tends to flow all along a surface, instead of flowing via free space.
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