You take a picture of a rainbow with aninfrared camera, and your friend takes a picture at the same timewith visible light. (a) Is the height of the rainbow in the infraredpicture greater than, less than, or the same as the height of therainbow in the visible-light picture? (b) Choose the best explanation from among the following:I. The height will be greater because the top of a rainbow is red,and so infrared light would be even higher.II. The height will be less because infrared light is below the visible spectrum.III. A rainbow is the same whether seen in visible light or infrared; therefore the height is the same

You take a picture of a rainbow with aninfrared camera, and your friend takes a picture at the same timewith visible light. (a) Is the height of the rainbow in the infraredpicture greater than, less than, or the same as the height of therainbow in the visible-light picture? (b) Choose the best explanation from among the following:I. The height will be greater because the top of a rainbow is red,and so infrared light would be even higher.II. The height will be less because infrared light is below the visible spectrum.III. A rainbow is the same whether seen in visible light or infrared; therefore the height is the same

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 46P: An electric current through hydrogen gas produces several distinct wavelengths of visible light....

See similar textbooks

Similar questions

An electric current through hydrogen gas produces several distinct wavelengths of visible light. What are the wavelengths of the hydrogen spectrum, if they form first-order maxima at angles 24.2°, 25.7°, 29.1°, and 41.0° when projected on a diffraction grating having 10,000 lines per centimeter?
A diffraction grating has 2000 lines per centimeter. At what angle will the first-order maximum be for 520-nmwavelength green light?
In the spectrophotometer, the light source is an important parameter. For differentspectrophometer we have studied number of different light sources. Suggest the effect ofwavelength, wavenumber and frequency on the light source. Is it necessary to usedmonochromatic light for spectrophometer analysis? What will happen, if we used differentslits widths for quantitative and qualitative analyses?
What must be the luminous intensity, in candela, of a spot light mounted on a ceiling of a 3-meter floor-to-ceiling high chapel if the illuminance level required is 1200 lux? The angle of inclination of the lamp is 30 degrees and lighting an altar table that is 900mm from the floor. HINT: COMPUTE FOR THE LUMINOUS FLUX FIRST.
The absorption cross section for fluorescein, a dye that is used as a fluorescent probe for biological imaging (see the Chapter Opener image), is 9.25 × 10-16 cm2 molecule-1 at 500 nm. How much light is transmitted through a 1-cm path length by a standard 10-6 M solution of fluoresceinused to label biological samples?
Q: An optical fiber with core radius = 62µm, n, = 1.49, n; = 1.45. If the time delay between the longest and shortest paths = 68.506nsec. a) What is the fiber type? b) Calculate the fiber length. c) Calculate the critical angle. « d) Calculate the numerical aperture. e) In this fiber, what is the main reason of dispersion? What is the effect of dispersion on this optical communication system? What do you suggest to do to reduce the dispersion effect?
Q₁: The radiation intensity of an antenna is given by: U = a cos² (b0) (where a and b are constants) and it is equal to 1 (W/unit solid angle) at the half power angle. If a normalized radiation intensity is shown in figure blow, find: a) Prad b) Rrad c) Do 290 280 270 260 300 310 250 240 230 320 220 d) HPBW and FNBW 330 210 340 200 350 0 10 1 190 1 1 1 10. I 0. 10.5 0.4 0.9 48 10.3 0.2 0. 180 170 20 160 30 150 40 140 50 60 70 130 120 80 90 100 110
A uniform plane wave is generated from a ham radio antenna on earth. The take off angle is 60 degrees (the angle ffrom ground going up is 60 deg). Using simple trigonometry the angle if incidence with the ionosphere would be 30 degrees. Assume the F layer of the ionosphere is 300 km above the earth. The wave frequency from the transmitter is 21 MHz. WIll this wave refract off the ionosphere and end up somewhere on earth? If yes, what is the distance it travels?
Consider a spectrometer based on a diffraction grating.Construct a problem in which you calculate the distancebetween two wavelengths of electromagnetic radiation in yourspectrometer. Among the things to be considered are thewavelengths you wish to be able to distinguish, the number oflines per meter on the diffraction grating, and the distancefrom the grating to the screen or detector. Discuss thepracticality of the device in terms of being able to discernbetween wavelengths of interest.
Determine the diameter of a paraboloidal reflector required to produce a beam of 15o width at 1.5 GHz.
Find the wavelength (in nm) in a material (n=1.689)for a light with a wavelength in air of 759 nm. Round your answer to 2 decimal places.
The figure below depicts spectral reflectance measurements for three different materials: a green leaf from a healthy plant, a sheet of shiny blue paper, and the palm of a human hand. The measurements are labeled 1 (black line), 2 (red line), and 3 (blue line). Match the measurements to the most appropriate material type