Einstein And Relativity


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Einstein And Relativity

  1. 1. Einstein and Relativity (and why you should care) <ul><li>Relativity: What is it? </li></ul><ul><li>How does this change anything? </li></ul><ul><li>Existentialism </li></ul><ul><li>Current Events Assignment </li></ul>
  2. 2. Einstein <ul><li>What is Einstein’s famous equation? </li></ul><ul><li>What do the letters stand for? </li></ul><ul><li>Where is Einstein originally from? </li></ul><ul><li>Why did Einstein leave? </li></ul><ul><li>Why is Einstein and important figure in history? </li></ul>
  3. 3. Why Einstein? <ul><li>E=MC 2 </li></ul><ul><li>Energy=Mass x Speed of Light 2 </li></ul><ul><li>Germany </li></ul><ul><li>Nazi and Hitler </li></ul><ul><li>Relativity changed physics and western thought forever </li></ul>
  4. 4. Einstein and Light <ul><li>What is the big deal about light? </li></ul><ul><ul><li>If you are in a car going the speed of light and you turn on your head lights, will a bystander see them? </li></ul></ul><ul><li>Before Einstein no one really understood how light worked </li></ul><ul><ul><li>Is it a wave, particles, quanta… no one was really sure. </li></ul></ul><ul><ul><li>Light did not follow Newtonian physics </li></ul></ul>
  5. 5. Einstein and Light <ul><li>Einstein decided that light is both a wave and a particle… that’s right… BOTH </li></ul><ul><li>Light is the fundamental measure of the Universe just like time is here on Earth </li></ul><ul><li>Since the Universe is so big, our understanding of time and space and physics and basically everything just does not apply… </li></ul>
  6. 6. Einstein and Relativity <ul><li>Understanding light leads to a different understanding of… Everything </li></ul><ul><li>Einstein realized that everything we consider concrete is really related to our current position in the Universe. </li></ul><ul><ul><li>Answer: A bystander would not see the headlights in front of the car </li></ul></ul>
  7. 7. Frame of Reference <ul><li>Your entire perception of mass, time, and light is based on where you are currently sitting (this is a whole new meaning to the idea of time zones) </li></ul><ul><li>Think of riding in a car. Does it appear that the inside of the car is moving or the outside world… </li></ul>
  8. 8. Twins Scenario <ul><li>Two twins are born here on Earth. One is selected to travel 8 light years away at 80% the speed of light. (Why can’t he be going the speed of light?) He takes an atomic clock with him. What will he find when he returns to Earth? </li></ul>
  9. 9. Atomic Clock Experiment <ul><li>To test Einstein’s theory, an atomic clock was placed in a stealth aircraft that flies above the atmosphere at very high speeds. The plane was flown around the earth for an entire day and then the atomic clock was compared to one that stayed on Earth all day. </li></ul>
  10. 10. Atomic Clock Experiment <ul><li>According to Einstein, what should be true about the clock that comes off of the airplane? </li></ul>
  11. 11. Why does this matter to history? <ul><li>How did the enlightenment and scientific revolution change history? </li></ul>
  12. 12. Philosophy and Relativity <ul><li>What is philosophy? </li></ul><ul><li>Love and pursuit of wisdom by intellectual means and moral self-discipline. </li></ul><ul><li>The critical analysis of fundamental assumptions or beliefs. </li></ul><ul><li>A system of values by which one lives </li></ul>
  13. 13. Existentialism <ul><li>Read the following statement. Write 1-2 sentences describing how you feel about the statement. Is it true? Baloney? Insulting? What do you think? </li></ul><ul><li>Life is not inherently valuable. </li></ul>
  14. 14. Existentialism <ul><li>Life only has meaning to the extent to which we assign it meaning. Individual decisions make the life worthwhile. </li></ul><ul><li>Freedom of choice is essential to humanity </li></ul><ul><li>Denies inherent rationality of universe </li></ul>