Wavelength of red light is close to 700 nm

This is College Physics Answers with Shaun Dychko. 700 nanometer light is incident on a double-slit where the slits are separated by 400 nanometers and we are told that there's a first order maximum in the diffraction pattern and at what angle will that maximum occur? So I converted both of these into meters by substituting the prefix 'nano' with times 10 to the minus 9 and we have this handy formula here which will tell us the angle and we divide both sides by the separation between the slits in the diffracting grating and so then sin of the angle to the maximum is the order times the wavelength divided by the distance between the lines and take the inverse sin of both sides and we get the angle is the inverse sin of mλ over d. So that's the inverse sin of 1 times 700 times 10 to the minus 9 meters— wavelength—divided by 400 times 10 to the minus 9 meters— separation between lines— but this is going to be undefined because the sin graph is like this and it has a range from negative 1 at its minimum to a maximum of 1 and this is the Θ-axis and this is the y-axis— this is a graph of y equals sin Θ— so you can't get an angle for a value for sin that's more than 1 because it will never be more than 1 so anyways so the answer is undefined. The inverse sin of a number greater than 1 is undefined is our reason for complaint here and you can't have λ over d being greater than 1 so either the wavelength has to be lower than what's stated in the question or d has to be greater than...

UCAR (Randy Russell) This diagram shows the relative wavelengths of blue light and red light waves. Blue light has shorter waves, with wavelengths between about 450 and 495 nanometers. Red light has longer waves, with wavelengths around 620 to 750 nm. Blue light has a higher frequency and carries more energy than red light. The wavelengths of light waves are very, very short, just a few 1/100,000ths of an inch. This material is based upon work supported by the National Center for Atmospheric Research, a major facility sponsored by the National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.

Learning Objectives By the end of this section, you will be able to: • Describe important physical features of wave forms • Show how physical properties of light waves are associated with perceptual experience • Show how physical properties of sound waves are associated with perceptual experience Visual and auditory stimuli both occur in the form of waves. Although the two stimuli are very different in terms of composition, wave forms share similar characteristics that are especially important to our visual and auditory perceptions. Waveforms of different types surround us at all times, however we only have receptors which are sensitive to specific types of wavelengths. In this section, we describe the physical properties of the waves as well as the perceptual experiences associated with them. AMPLITUDE AND WAVELENGTH Two physical characteristics of a wave are amplitude and wavelength (figure below). The amplitude of a wave is the height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on the wave (trough). Wavelength refers to the length of a wave from one peak to the next. The amplitude or height of a wave is measured from the peak to the trough. The wavelength is measured from peak to peak. Wavelength is directly related to the frequency of a given wave form. Frequency refers to the number of waves that pass a given point in a given time period and is often expressed in terms of hertz (Hz), or cycles per second. Longer wavelen...

A frequency of red light has a wavelength of 700 nm. Part A—Compare the wavelength and frequency of violet light to red light. Part B—Identify a type of radiation that has lower frequencies than red light. Part C—Identify a type of radiation that has shorter wavelengths than violet light. • • Violet light has a lower frequency and longer wavelength than red light. • ultraviolet radiation • infrared radiation • • Violet light has a lower frequency and longer wavelength than red light. • infrared radiation • ultraviolet radiation • • Violet light has a higher frequency and shorter wavelength than red light. • ultraviolet radiation • infrared radiation • • Violet light has a higher frequency and shorter wavelength than red light. • infrared radiation • ultraviolet radiation A mixture of red and green light is shone on each of the subtractive colors. Part A—Which of these colors of light are reflected from magenta? Part B—Which of these colors of light are reflected from yellow? Part C—Which these colors of light are reflected from cyan? • Part A. red and green Part B. green Part C. red • Part A. red and green Part B. red Part C. green • Part A. green Part B. red and green Part C. red • Part A. red Part B. red and green Part C. green Explain why we see the colorful effects of thin-film interference on the surface of soap bubbles and oil slicks, but not on the surface of a window pane or clear plastic bag. • The thickness of a window pane or plastic bag is more than the wavelen...

There are many kinds of waves all around us. There are waves in the ocean and in lakes. Did you also know that there are also waves in the air? Sound travels through the air in waves and light is made up of waves of The wavelength of a wave describes how long the wave is. The distance from the "crest" (top) of one wave to the crest of the next wave is the wavelength. Alternately, we can measure from the "trough" (bottom) of one wave to the trough of the next wave and get the same value for the wavelength. The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. Light waves have very, very short wavelengths. Red light waves have wavelengths around 700 nanometers (nm), while blue and purple light have even shorter waves with wavelengths around 400 or 500 nm. Some radio waves, another type of electromagnetic radiation, have much longer waves than light, with wavelengths ranging from millimeters to kilometers. Waves of blue light have a shorter wavelength than waves of red light. UCAR/Randy Russell Sound waves traveling through air have wavelengths from millimeters to meters. Low-pitch bass notes that humans can barely hear have huge wavelengths around 17 meters and frequencies around 20 hertz (Hz). Extremely high-pitched sounds that are on the other edge of the range that humans can hear have smaller wavelengths around 17 mm and frequenci...