Today in History: E = mc²

Today in History: E = mc²

E_Equals_MC_Squared_Explained

 

IN your schooldays most of you who read this book made acquaintance with the noble building of Euclid’s geometry, and you remember—perhaps with more respect than love—the magnificent structure, on the lofty staircase of which you were chased about for uncounted hours by conscientious teachers. 
Part I: The Special Theory of Relativity, Albert Einstein

On November 21st, 1905,  German-born theoretical physicist Albert Einstein (1879-1955) proposed that energy and mass (matter) are interchangeable or different forms of the same thing.  Energy turns into mass, and mass turns into energy; while mass is not conserved on its own, extracting energy from mass is essential for the Universe. His theory was expressed in an article entitled, Ist die Trägheit Eines Körpers von Seinem Energieinhalt Abhängig? (Does the Inertia of a Body Depend Upon Its Energy-Content?), published in Annalen der Physik.  That same year, Albert Einstein obtained a doctorate.  Unable to find a teaching position, for years he worked as a Technical Assistant in a Swiss Patent Office, until he was appointed Privatdozent  in Bern -- after which came a series of academic appointments before he emigrated to the United States where he then became Professor of Theoretical Physics at Princeton University.

Albert Einstein is best known for his theory of relativity and his important contributions to quantum mechanics. His mass energy equation is regarded as perhaps the world's most famous equation, to be developed over subsequent years. Einstein's theory paved the way for further research and inspired scientists and others to look more closely at the laws of physics, and help us ultimately understand our place in the universe , not to mention our daily living:  for example, things that are still in space still move in time; stars transform their mass back into energy through heat and light; and cars burn gasoline to generate movement.  In 1921, he won the Nobel Prize in physics. Einstein's works include Relativity: The Special and General Theory, A Popular Exposition (1920), Investigations on the Theory of Brownian Movement (1926), The Evolution of Physics (1938), About Zionism (1930), Why War? (1933), and Out of My Later Years (1950). 

The following articles are drawn from Proquest Historical Newspapers, which informs and inspires classroom teaching and learning:

 

231120_News_219x365

 

Tips:

Images:


Need to keep current, look to the past, teach a topic? The Everett Cafe features daily postings of news from around the world, and also promotes awareness of historical events from an educational context. Be sure to check additional Cafe News postings on the library blog.


Tags:
  • Learning at the Library
  • News Cafe
Back to skip to quick links
occupancy image
3FL
occupancy image
2FL
occupancy image
1FL
The library is
barely
crowded right now.
How busy?