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GEOGRAPHY

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The study of places and the interactions between people and their environs is known as geography. Geographers study the surface of the Earth and the various human societies that live there. The ancient Greek scholar Eratosthenes is referred to be the "father of geography." He was the first to use the term "geography," and he also possessed a small-scale understanding of the planet, which enabled him to calculate the earth's diameter. Eratosthenes was a multi-talented individual. As the Greek philosopher and explorer Herodotus showed in the fifth century B.C, knowledge was amassed about such novel and exotic locales. That knowledge came to be known as geography, a term first used in the third century B.C. as the title of Eratosthenes of Cyrene's book Geographica. Table of contents THE BIG BANG THEORY STAR THE SOLAR SYSTEM MEMBERS OF THE SOLAR SYSTEM UNIVERSE The universe is commonly defined as the totality of everything that exists,including all physical matt...
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Wave

 Wave 

      ↕️

Wave defination many way as classified,mainly simple word wave refer 

In simple word define,

➡️ In simple sentence,wave is progressively variation from that energy passes point to point in medium and they take a form of elastic deformation and variation of pressure and electric or magnetic intensity,temperature and electric potential.



In physics word define,

➡️ Wave velocity that distance travel by wave per unit time.Its speed travelled by creat distrubance of the rock or particle on crest,compression ,react and refraction propagation through an medium.The S.I unit of wave is meter per sec.




Another word define,

➡️ A wave is continuous and continuous or repeatedly to create disturbance on  medium and a disturbance of a single pulse.


In mathematic word,

➡️ The mathematical relationship between the speed of wave and its wavelength and frequency.its formula is velocity=wavelength * frequency.(v = f * λ )


Basic base level Defined

➡️ In single sentence,when the water of ocean fall and rises alternately is called wave.An earthquake volcanic disturbance and landslide due to water rises large amount of ocean.


Another defination

➡️ Wave refer to transfer of energy to one place to other without the transfer of matter.Its appear in the form of oscillation  when they through any medium e.g( sound wave or water wave ) and not through any medium e.g(electromagnetic wave)

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