A Medical image has two adjacent structures A and B.Show that the contrast to noise ratio of A relative to B(CNRAB) is given by CNRAB=SNRA-SNRB.
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A Medical image has two adjacent structures A and B.Show that the contrast to noise ratio of A relative to B(CNRAB) is given by CNRAB=SNRA-SNRB.
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- A thin film of oil (n = 1.30) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, the film reflects most strongly red light at 640 nm and reflects no light at 548 nm. (a) What is the minimum thickness of the oil film? nm (b) Let m₁ correspond to the order of the constructive interference and m₂ to the order of destructive interference. Obtain a relationship between m₁ and m₂ that is consistent with the given data.Two waves travelling in the same direction are given by: y1 = 0.2 sin(2rx-20t+p) and y2 = 0.2 sin(2Ttx-20t), where x and y are in meters and t is in seconds. If the %3D two waves start at the same moment, then the path difference, Ax, corresponding to a fully destructive interference is:Light with λ = 650 n m is incident on 2 slits, each with a width of 0.25 mm and separated by 0.75 mm b. What is the distance from the central maximum to the first order maximum created by the double slits if the screen is 1.2 m away?
- The analysis of any two-point source interference pattern and a successful determination of wavelength demands an ability to sort through the measured information and equating the values with the symbols in Young's equation. Apply your understanding by interpreting the following statements and identifying the values of y, d, m and L. Finally, perform some conversions of the given information such that all information share the same unit. Two slits that are 0.200 mm apart produce an interference pattern on a screen such that the central maximum and the 10th bright band are distanced by an amount equal to one-tenth the distance from the slits to the screen. y= ________ d=________ m=_______ L=________A thin film of oil (n=1.4) rests on the surface of a pool of water (n=1.33). Light with frequency 5.0x10^14 Hz traveling through air (n=1) is normally incident upon the oil, undergoing thin film interference. a) Will there be a relative phase shift? b) What is the wavelength of the light in the oil? c) What minimum thickness should the oil have if we wish to get constructive interference? d) What minimum thickness should the oil have if we wish to get destructive interference? Please write your answers in the space below and email your work. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I U S Paragraph Arial V 10pt くく AV I XQ 5 ते EE ...A 4.23-kHz tone is being produced by a speaker with a diameter of 0.212 m. The air temperature changes from 0 to 30 °C. Assuming air to be an ideal gas, find the change in the diffraction angle e. Number ! Units deg 8₁ (colder) 82(hotter)
- A point on the third nodal line from the center of an interference pattern is 40.1 cm from one source and 31.8 cm from the other. The sources are 10.4 cm apart and vibrate in phase at 14.0 Hz. Calculate the wavelength of the waves, in cm.The analysis of any two-point source interference pattern and a successful determination of wavelength demands an ability to sort through the measured information and equating the values with the symbols in Young's equation. Apply your understanding by interpreting the following statements and identifying the values of y, d, m and L. Finally, perform some conversions of the given information such that all information share the same unit. If two slits 0.100 mm apart are separated from a screen by a distance of 300 mm, then the first-order minimum will be 1 cm from the central maximum. y= ________ d=________ m=_______ L=________A thin film of thickness 187.5 nm and refractive index 1.6 is coated on plastic of refractive index 1.5. Red light of wavelength 600 nm is incident normally on the film. (a) Determine total path difference between light reflecting from the top and bottom of the film (b) Express path difference in terms of wavelength. (c) what type of interference do we have for the reflected light?