Narrow, parallel, glowing gas-filled tubes in a variety of colors form block letters to spell out the name of a nightclub. Adjacent tubes are all 2.80 cm apart. The tubes forming one letter are filled with neon and
Want to see the full answer?
Check out a sample textbook solutionChapter 38 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
- Both sides of a uniform film that has index of refraction n and thickness d are in contact with air. For normal incidence of light, an intensity minimum is observed in the reflected light at λ2 and an intensity maximum is observed at λ1, where λ1 > λ2. (a) Assuming no intensity minima are observed between λ1 and λ2, find an expression for the integer m in Equations 27.13 and 27.14 in terms of the wavelengths λ1 and λ2. (b) Assuming n = 1.40, λ1 = 500 nm, and λ2 = 370 nm, determine the best estimate for the thickness of the film.arrow_forwardA horizontal laser beam of wavelength 632.8 nm has a circular cross section 2.00 nun in diameter. A rectangular aperture is to lie placed in the center of the beam so that when the light falls perpendicularly on a wall 4.50 m away, the central maximum fills a rectangle 110 mm wide and 6.00 mm high. The dimensions are measured between the minima bracketing the central maximum. Find the required (a) width and (b) height of the aperture. (c) Is the longer dimension of the central bright patch in the diffraction pattern horizontal or vertical? (d) Is the longer dimension of the aperture horizontal or vertical? (e) Explain the relationship between these two rectangles, using a diagram.arrow_forwardA beam of 580-nm light passes through two closely spaced glass plates at close to normal incidence as shown in Figure P27.23. For what minimum nonzero value of the plate separation d is the transmitted light bright?arrow_forward
- A certain kind of glass has an index of refrac- tion of 1.646 for blue light of wavelength 430 nm and an index of 1.611 for red light of wave length 680 nm. A beam containing these two colors is incident at an angle of 36.81◦ on a piece of this glass. What is the angle between the two beams inside the glass? Answer in units of ◦arrow_forwardAn acoustic wave strikes a boundary at medium 1 (1540 m/sec) with a 45 degrees. Upon entering medium 2 (980 m/sec) with oblique incidence, what will happen to the transmission angle?arrow_forwardIf there are seven (7) superposed or combined colors of light incident on a dispersing medium (e.g. prism), with the same angle of incidence, _____ Snell’s equations are needed determine the angles of refraction. In a non-dispersive medium, which has ___ index of refraction, ___ equation (s) are needed. a. infinite; 1; 1 b. 7; 1; 0 c. 7; 1; 1 d. 7; infinite; 1 e. infinite; 0; 1arrow_forward
- A thin film of oil (n = 1.44) of thickness 436 nm with air on both sides is illuminated with white light at normal incidence. Determine the most strongly and the most weakly reflected wavelengths in the range 482 nm to 653 nm. (Enter your answers in (a) the most strongly reflected nm nm.) (b) the most weakly reflected nmarrow_forwardA certain kind of glass has an index of refrac- tion of 1.646 for blue light of wavelength 430 nm and an index of 1.611 for red light of wave length 680 nm. A beam containing these two colors is incident at an angle of 36.81◦ on a piece of this glass. What is the angle between the two beams inside the glass? Answer in units of ◦. The answer isn’t 0.48arrow_forwardAstronomers observe a 60.0 MHz radio source both directly and by reflection from the sea as shown in Figure P37.7. If the receiving dish is 20.0 m above sea level, what is the angle of the radio source above the horizon at the first maximum?arrow_forward
- 1.What is the total angle between the incident ray and the reflected ray if the angleof incidence is equal to 40°? (answer only) 2.What is the energy of a green light (5.6 x 1014 Hz)? (answer only) 3. What is the energy of an orange light (4.3 x 1014 Hz)? (answer only)arrow_forwardFig. 1 shows two light rays of wavelength 610 nm traveling from air through twodifferent media with refractive indices n1 = 1.5 and n2 = 1.6 and to air again. Assumingthat the two waves are initially out of phase by 180° and they become exactly in phase once they pass through the two media, determine (a)the smallest possible value of L. (b)the second smallest possible value of L.arrow_forwardA thin film of glycerin (n = 1.473) of thickness 540 nm with air on both sides is illuminated with white light at near normal incidence. What wavelengths will be strongly reflected in the range 300 nm to 700 nm? nm (smallest value) nm nm (largest value)arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax