DEMO MODERN PHYSICS education for science.pptx

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1. Prayer

2. PARTICLES

3. PARTICLES

4. Particle in a box

5. What is particle in a box?

6. Some trajectories of a particle in a box according to  Newton's laws  of  classical mechanics  (A), and according to the  Schrödinger equation  of  quantum mechanics  (B–F). In (B–F), the horizontal axis is position, and the vertical axis is the real part (blue) and imaginary part (red) of the  wave function . The states (B,C,D) are  energy eigenstates , but (E,F) are not.

7. ENERGY LEVEL

8. GROUP ACTIVITY

9. Step 1: Define the Potential Energy  V

10. Step 2: Solve the Schrödinger Equation

11. Step 3: Define the wavefunction

12. Step 4: Determine the Allowed Energies

13. Why do you think quantum dots emit different colors depending on their size? How does this relate to the concept of quantized energy levels in the particle in a box model? Processing Questions: 

14. 2. Imagine you are designing a new TV using quantum dots. How would you use your knowledge of the particle-in-a-box model to control the colors produced by the screen?  Processing Questions: 

15. The particle-in-a-box model demonstrates how particles, like electrons, behave when confined to a specific space. In this confined space, particles can only exist at certain energy levels rather than having any value of energy. This is a clear example of quantization, a fundamental concept in quantum mechanics. Particles in a box can only have specific energy amounts, not just any value. This means their energy is "quantized," which is a key idea in quantum mechanics. The wavefunction (ψ\psi) tells us the chances of finding a particle in different spots in the box. We can't know exactly where it is, just where it is likely to be.

16. Directions: Carefully read each statement and decide if it is True or False . In the particle-in-a-box model, particles can occupy any energy level continuously. The wavefunction ψ\psi represents the probability of finding a particle at a specific location within the box. The particle-in-a-box model is a key concept in quantum mechanics that explains how particles behave when confined to a small space. Quantum dots are examples of materials that rely on the principles of the particle-in-a-box model. The energy levels of a particle in a box are quantized, meaning the particle can only have specific, discrete energy values.

17. THANK YOU!