Week 4 Post 2

The discovery the Planck's length a riveting moment in the history of physics. Max Planck, a German theoretical physicist discovered the Planck's length almost by accident. The Planck's length is significant because it is a minimum length in nature. Despite it's inconceivably small length, the Planck provides insight into why a unified theory of quantum gravity is necessary. In the late 1800's, physicists had mapped a spectrum of the electromagnetic energy that a blackbody gives off (a blackbody being a body that can absorb and emit every kind of electromagnetic radiation. For the purpose of constructing the blackbody spectrum, scientists used very hot metal). Several physicists tried to trace the spectrum with a formula, but often encountered infinites and results did not properly describe the curves of the spectrums. The problem came from the limit of explanations that classical mechanics could provide and that it allowed for an infinite amount of particle movements within a black body. Planck tackled this challenge and managed to quantize (or count) the energy using multiples and a mystery constant that he was yet to uncover. 

Max Planck knew that to get a formula that would successfully follow the curved of the black body, particles could only have energies that were multiples of this very minuscule and minimum constant. The equation:

6.62607015×10⁻³⁴ J·s

 Shows that energy is the frequency of the vibrations times his constant that tangibly defines the divisibility of space and is even redefining the kilometer.


    

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