When we look at Technologies[tv,radio,phones,x-ray and etc.]and theories from old man[Albert Einstein,Michio Kaku,Stephen Hawking,Neil deGerease Tyson,Sir Isaac Newton],we actually hear about physics.What is actually physics means?it is science field and observation,studying about interaction between matters and mass,forces,energy,radiations,foundation of technology and motions.It can include the astronomy and maths,biology,chemistry and etc.
True facts;Physics has been exists since Ancient Greeks time[physics means nature knowledge]
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