The diffraction effect will enhance as the wavelength has increased, so the bright fringes will span wider. If the number of bright fringes has increased, the measurement will be more accurate.kuruman said:If you use a laser of higher intensity the locations where bright fringes appear will receive more photons per second so they will be brighter.
Why do you think that increasing the wavelength will increase he number of bright fringes? What equation do you have in mind? Also, in what way do you think the experiment will be improved if you increase the number of bright fringes?
I repeat, what mathematical equation says that the number of fringes increases as the wavelength increases? You need to understand this point before you start thinking about increasing the accuracy of the experiment.Jason Ko said:The diffraction effect will enhance as the wavelength has increased, so the bright fringes will span wider. If the number of bright fringes has increased, the measurement will be more accurate.
I think I've made thing wrong. mλ=asinθ, larger wavelength means larger θ, so fewer fringes will be formed.kuruman said:I repeat, what mathematical equation says that the number of fringes increases as the wavelength increases? You need to understand this point before you start thinking about increasing the accuracy of the experiment.
Also, you did not explain why more fringes means more accurate measurement. What exactly will you be measuring that will have its accuracy increased when you have more bright fringes?
Now you got the idea. So if you want to have more fringes, you have to decrease the wavelength.Jason Ko said:I think I've made thing wrong. mλ=asinθ, larger wavelength means larger θ, so fewer fringes will be formed.
Thks a lot!kuruman said:Now you got the idea. So if you want to have more fringes, you have to decrease the wavelength.
The double-slit experiment is a fundamental demonstration in quantum mechanics where particles such as electrons or photons are passed through two closely spaced slits. The resulting pattern on a detection screen shows interference fringes, suggesting wave-like behavior, even when particles are sent one at a time. This experiment highlights the wave-particle duality of quantum objects.
The double-slit experiment is important because it challenges classical intuitions about particles and waves. It provides direct evidence of the wave-particle duality, a cornerstone of quantum mechanics, and raises profound questions about the nature of reality, observation, and measurement in the quantum realm.
When an observation is made to determine which slit the particle goes through, the interference pattern typically observed disappears, and the particles behave more like classical particles, producing two distinct clusters on the detection screen. This phenomenon illustrates the principle that measurement affects the system being observed.
Yes, the double-slit experiment can, in principle, be performed with larger objects. Experiments have been conducted with molecules and even small clusters of atoms, and they still show interference patterns, indicating wave-like behavior. However, as the size of the objects increases, maintaining coherence and preventing decoherence becomes significantly more challenging.
The double-slit experiment suggests that particles do not have definite positions or paths until they are observed. It implies that reality at the quantum level is fundamentally probabilistic and that particles can exist in a superposition of states. This challenges classical notions of determinism and locality, leading to various interpretations of quantum mechanics, such as the Copenhagen interpretation, many-worlds interpretation, and others.