Visible Spectrum: All Colors & Where Is Brown? - Physics Forums
2004年8月25日 · 1. What is the visible spectrum? The visible spectrum is the range of electromagnetic radiation that our eyes are able to detect. It includes all the colors of the rainbow, from red to violet. 2. How many colors are in the visible spectrum? There are seven colors in the visible spectrum: red, orange, yellow, green, blue, indigo, and violet.
Index of refraction of different wavelengths - Physics Forums
2011年12月13日 · Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for 482.9 and 676.0 in the visible spectrum. What is the minimum thickness of the film ? Homework Equations 2nt=m*lambda 2nt=(m+1/2)*lambda The Attempt at a Solution
Angular width of first-order visible spectrum - Physics Forums
2020年3月23日 · FAQ: Angular width of first-order visible spectrum What is the angular width of the first-order visible spectrum? The angular width of the first-order visible spectrum is approximately 137 degrees. This is the angle between the red and violet ends of the spectrum when viewed from a distance of one meter.
Exploring Visible Spectrum of Light: Seeking Advice - Physics Forums
2008年8月10日 · The visible light spectrum (as split in ascending frequency order by a prism) begins with Red then continues with Orange, Yellow, Green, Blue, and Idigo (the highest viewable light frequency). Infrared (invisible heat energy) is below visible red frequencies and ultraviolet (invisible energy responsible for causing sunburn) is above indigo.
Transitions: Visible Spectrum & n=3 to n=1 - Physics Forums
2010年5月12日 · The visible spectrum refers to the range of electromagnetic radiation that is visible to the human eye. In the context of transitions from n=3 to n=1, it specifically refers to the wavelengths of light that are emitted or absorbed when an electron moves from the third energy level to the first energy level in an atom.
Improving the Efficiency of Light Bulbs: Possible Solutions?
2014年10月14日 · Efficiency Light Lightbulb Thermal radiation Visible spectrum In summary, the conversation discusses ways to make a light bulb more efficient in producing visible light. One suggestion is to replace the filament with a semiconductor material, essentially turning the light bulb into an LED.
Seeing outside of the visable spectrum - Physics Forums
2003年6月13日 · The types of light that are outside of the visible spectrum include infrared, ultraviolet, microwaves, and radio waves. 3. Why is it important to study light outside of the visible spectrum? Studying light outside of the visible spectrum allows us to gain a deeper understanding of the universe and the objects within it.
Mean colour of visible spectrum? - Physics Forums
2015年1月20日 · The concept of a mean color in the visible spectrum is arbitrary and influenced by historical and cultural factors. Our eyes have three color sensors that have broad overlapping responses, and the colors we perceive are not necessarily directly related to the mean or peak of the light spectrum.
Converting non-visible light to visible spectrum for photography
2020年9月20日 · Non-visible light can be converted to visible spectrum for photography using a process called "spectrum conversion". This involves using specialized equipment, such as filters and lenses, to filter out specific wavelengths of light and only allow visible light to pass through.
Why Do Second and Third Order Spectra Overlap in Diffraction …
2013年4月2日 · Homework Statement White light is incident normally on a diffraction grating with slit separation d of 2.00x10^-6m. a)Calculate the angle between the red and violet ends of the first-order spectrum. The visible spectrum has wavelength between 400nm and 700nm. b)Explain why the second and the...