Explain the concept of duality in physics, focusing on the wave-particle duality of light and matter. How do experiments like the double-slit experiment illustrate this duality?
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Explain the concept of duality in physics, focusing on the wave-particle duality of light and matter. How do experiments like the double-slit experiment illustrate this duality?
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- In a double slit experiment with a single electron, a very thin film of fluorescent material that emits a photon whenever an electron passes through is placed on one of the slits to check which slit the electrons goes through. Describe the resulting pattern on the detecting screen if the experiment is repeated many timeThe width of the central bright fringe in a diffraction pattern on a screen is identical when either electrons or optical light pass through a single slit. The distance between the screen and the slit is the same in each case and is large compared to the slit width. If the wavelength of the optical light is 552 nm, how fast are the electrons moving?Give your answer in units of m/s, accurate to 2 decimal placesA single beam of electrons shines on a single slit of width 9.5nm. A diffraction pattern (of electrons!) is formed on a screen that is 7.6m away from the slit. The distance between the central bright spot and the first minimum is 1.9cm.What is the wavelength (nm) of the electrons?Make use of the small angle approximation
- 3Electron diffractometers help us understand the structure of matter. Material is covered in an array of parallel nano-scale metal wires with unknown spacing. A beam of electrons, accelerated through a potential of 20.80 kV produces a pattern of electron impacts on a distant screen with a central bright peak with two smaller peaks. The angular position of the smaller peaks is 25.20 degrees relative to the central peak. What is the spacing of the wires? You may treat the electron as non-relativistic. (Answer in meters)When we model light (EM radiation) as a particle, we call it a photon a packet of energy. How does this work with the model of light as a wave? To think through this, answer the following: If the intensity of a beam of light is related to the number of photons passing per second, how would you explain the intensity of light using the model of light as a wave? What feature (wavelength, frequency, amplitude, oscillation, etc.) can be a measure of intensity and why do you think so? Enter your answer here
- Question in the AttachmentsThere are two parts, thank you.Determine the de Broglie wavelength for i. an electron (mass = 9.1 x 10-31 kg) moving at a speed of 6.0 × 10 m/s and ii. a baseball (mass = 0.15 kg) moving at a speed of 13 m/s. iii. Can you explain why does the baseball not show any diffraction pattern if it passes through the window of width ~ 1m?A single beam of electrons shines on a single slit of width 8.7nm. A diffraction pattern (of electrons!) is formed on a screen that is 3.9m away from the slit. The distance between the central bright spot and the first minimum is 5.7cm.What is the kinetic energy (keV, i.e. kilo electron-Volts) of the electrons?Make use of the small angle approximation.
- Please explain in an in-depth answer with steps. I already have the answer but I don't understand it. A proton and an electron have the same de Broglie wavelength. How do their speeds compare?During a certain experiment the de Broglie wavelength of an electron is 670 nm, which is the same as the wavelength or red light. How fast is the electron moving in m/s?The work function of a certain metal is found to be 1.82 eV. What is the stopping potential required to to stop the current in a photoelectric effect experiment if the wavelength of the incident light is 413 nm. Round your answer to 3 significant figures. Add your answer