ភាពខុសគ្នារវាងកំណែនានារបស់ "ហែងរីហ ហឺត"

Jump to navigation Jump to search
គ្មាន​ចំណារពន្យល់ការកែប្រែ
(Bot: Migrating 73 interwiki links, now provided by Wikidata on d:q41257 (translate me))
In more advanced experiments, Hertz measured the velocity of electromagnetic radiation and found it to be the same as the light’s velocity. He also showed that the nature of radio waves’ reflection and refraction was the same as those of light and established beyond any doubt that light is a form of electromagnetic radiation obeying the Maxwell equations.
 
Hertz's experiments would soon trigger the invention of the [[wireless telegraph]], [[radio]], and later [[television]]. In 1930 the [[International Electrotechnical Commission]] (IEC) recognized his work by naming the unit of frequency—one cycle per second—the "[[hertz]]".<ref name="hertzunit">[http://www.iec.ch/about/history/overview/ IEC History]. Iec.ch.</ref>
 
===Meteorology===
៥១

កំណែប្រែ

បញ្ជីណែនាំ

ឧបករណ៍ផ្ទាល់ខ្លួន

សណ្ដាន

ច្រើនទៀត