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What was Einstein known for?

Tobacco lobbyist?. Stamps?. His hair?. His Music?. Fashion?. His TONGUE?. What was Einstein known for?. OR..…. Einstein is probably best known as the father of…. Special Relativity. “I sometimes ask myself how it came about that I was the one to develop the theory of relativity.

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What was Einstein known for?

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  1. Tobacco lobbyist? Stamps? His hair? His Music? Fashion? His TONGUE? What was Einstein known for? OR..…

  2. Einstein is probably best known as the father of…. Special Relativity

  3. “I sometimes ask myself how it came about that I was the one to develop the theory of relativity. The reason, I think, is that a normal child never stops to think about problems of space and time. But my intellectual development was slowed, as a result of which I began to wonder about space and time only when I had already grown up.” ? ? ? ?

  4. Maxwell- EM Radiation Background • Ether Michelson-Morley Experiment • Annus Mirabilis

  5. Early 1905 Photoelectric Effect Annus Mirabilis June 1905 Theory of Special Relativity The miracle year Late 1905 Brownian Motion

  6. All things are Relative Needs some point of comparison What is Relativity? Are you moving right now? Or maybe it is easier to ask…. What is absolute? Length? Time? Mass?

  7. Try this out Connect ALL nine dots using only four straight lines without taking your pen off the paper What pre-conceived ideas (absolutes) are you holding on to?

  8. Gedanken “Mind experiment” Consider a device which will measure the time it takes light to bounce back and forth off of two mirrors If the mirrors are 4 m apart, what would be the total distance traveled by one reflection? 8 m

  9. Gedankenpart deux Now lets consider the same situation on a moving vehicle and someone observes the mirrors from off the moving vehicle. If the vehicle moves 3 m in the same time for light to reach the top how far does light seem to travel in one reflection? 10 m

  10. ??? 10 m = 8 m ??? Famous Quotes “Nature allows no paradoxes. If you think you have encountered one; check your premises”- Ayn Rand

  11. Einstein’s Relativity

  12. Postulate Definition • 1. To make claim for; demand. • 2. To assume or assert the truth, reality, or necessity of, especially as a basis of an argument. • 3. To assume as a premise or axiom; take for granted. The Tabletop Explainer

  13. First Postulate That is; any event within a portion of space (a frame) can be specified by three spatial dimensions (x, y, z, t). Also, the laws that apply to us in everyday circumstances (Newton's laws) also apply within each frame of reference 1. Physical laws are the same in all frames of reference.

  14. Second Postulate c = 3.0 x 10 8 m/s By this it is meant that in a vacuum, such as in space, the speed of light is always the same, regardless of the speed of someone observing it. 2. The speed of light is constant.

  15. c Speed Limits c = 3.0 x 10 8 m/s The maximum speed in our universe is the speed of light. Nothing in our universe can travel at the speed of light except other forms of electromagnetic radiation

  16. Newtonian Mechanics Relativistic Mechanics Newtonian vs. Relativistic Mechanics

  17. Gamma (g) Factor What is g for the following speeds?

  18. Time Dilation Where to is the time in the rest frame t is the time in the frame in relative motion What happens as one travels closer to the speed of light?

  19. Length Contraction Where lo denotes the rest frame length What happens as one travels closer to the speed of light?

  20. Relativistic Mass This is the quickest way to show that an object cannot travel at the speed of light… Where mo denotes the rest mass What happens as one travels closer to the speed of light? They would require infinite energy to accelerate

  21. Addition of Velocities A two stage rocket is moving with speed 0.6c when it separates. The second stage moves away from the first rocket with a speed of 0.6c. What is the speed of the second rocket with respect to the earth? 0.88 c

  22. Mass-Energy Equivalence What are the units of Energy? What are the units of mass? What are the units of c?

  23. The End?

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