laser (A = 633 nm) strikes a screen ontaining two narrow slits sep- that a beam of red light from a He-Ne arated by 0.200 mm. The fringe pattern is projected a white screen located 1.00 away. Find the distance in millimeters between adjacent bright areas near the center of the interference pattern that develops. As mentioned in the text, the relationship given above could be used to calculate the wavelength of light in an experiment in which the other three quantities are measured. 3. In Section 9.6, we described how the speed of light varies with wave- length (or frequency) for transparent solids. But the speed of light in matter is also a function of temperature and pressure. This depend- ence is most marked for gases and is instrumental in producing such things as mirages and atmospheric refraction, the latter phenome- non being the displacement of an astronomical object (like the Sun or another star) from its true position because of the passage of its light through the atmosphere. Because Earth's atmosphere is a gaseous mixture and easily compressed, its density is highest near Earth's surface and gradually declines with altitude. (Refer to the in the atmosphere is lowest near the surface and gradually gets higher, approaching c as one goes farther and farther into space Using this fact and the law of refraction, sketch the path a light t from the Sun would follow upon entering Earth's atmosphere, and predict the apparent position of the Sun relative to its true positi (Figure 9.88). What does this tell you about the actual location of the Sun's disk relative to your local horizon when you see it appe ently setting brilliantly in the west in the evening? 4. Would the critical angle for a glass-water interface be less than equal to, or greater than the critical gle for a glass-air interface Why? 5. Light enters diamond from with angle of incidence 45%. What is the angle of refraction ere is useful information in the footnote on p. 354. 6. Although above water, a swiner's are focused on a nearby boat. When the swimmer subreges, the oderwater part of the boat will not be in focus egh it is the ame distance a and the swimmer's eyes haveer een refocused Why? Watertight

laser (A = 633 nm) strikes a screen ontaining two narrow slits sep- that a beam of red light from a He-Ne arated by 0.200 mm. The fringe pattern is projected a white screen located 1.00 away. Find the distance in millimeters between adjacent bright areas near the center of the interference pattern that develops. As mentioned in the text, the relationship given above could be used to calculate the wavelength of light in an experiment in which the other three quantities are measured. 3. In Section 9.6, we described how the speed of light varies with wave- length (or frequency) for transparent solids. But the speed of light in matter is also a function of temperature and pressure. This depend- ence is most marked for gases and is instrumental in producing such things as mirages and atmospheric refraction, the latter phenome- non being the displacement of an astronomical object (like the Sun or another star) from its true position because of the passage of its light through the atmosphere. Because Earth's atmosphere is a gaseous mixture and easily compressed, its density is highest near Earth's surface and gradually declines with altitude. (Refer to the in the atmosphere is lowest near the surface and gradually gets higher, approaching c as one goes farther and farther into space Using this fact and the law of refraction, sketch the path a light t from the Sun would follow upon entering Earth's atmosphere, and predict the apparent position of the Sun relative to its true positi (Figure 9.88). What does this tell you about the actual location of the Sun's disk relative to your local horizon when you see it appe ently setting brilliantly in the west in the evening? 4. Would the critical angle for a glass-water interface be less than equal to, or greater than the critical gle for a glass-air interface Why? 5. Light enters diamond from with angle of incidence 45%. What is the angle of refraction ere is useful information in the footnote on p. 354. 6. Although above water, a swiner's are focused on a nearby boat. When the swimmer subreges, the oderwater part of the boat will not be in focus egh it is the ame distance a and the swimmer's eyes haveer een refocused Why? Watertight