![]() Is your blue the same as my blue? Probably, but it may not be the same as Newton's. For example, Newton's indigo is the modern blue, while his blue corresponds to the color we refer to as cyan. Visible light waves range in wavelengths from 380-700. In fact, there is evidence Newton's division of the spectrum doesn't even correspond to the colors we define by wavelengths. The diffraction of light refers to the bending of light waves around an object or through an aperture. The modern spectrum typically omits indigo. So, the spectrum was first described with seven colors, but most people, even if they see color well, can't actually distinguish indigo from blue or violet. English mathematician Isaac Newton (1643–1727) coined the word spectrum (Latin for "appearance") in his 1671 book "Opticks." He divided the spectrum into seven sections-red, orange, yellow, green, blue, indigo, and violet-in keeping with the Greek sophists, to connect the colors to days of the week, musical notes, and the known objects of the solar system. white light is a mixture of different colours, each with different wavelengths. the narrow opening becomes the source of a new wave (Huygen's principle). However, the slit now acts as a point source, i.e. If the wavelength is much larger than the width of a slit, again, no diffraction pattern will be observed. If you want a number, it's around 445 nanometers, but it doesn't appear on most spectra. if the wavelength of a light wave is roughly similar to the size of the. Consequently, the light waves will pass through the opening like a ray. An instrument called a spectrometer uses diffraction to separate light into a range of wavelengthsa spectrum. It is most pronounced when a light wave strikes an object with a size comparable to its own wavelength. We know, the velocity of light 3 x 10 8 m/sec. Ans: Given, Frequency of light 6.24 x 10 14 Hz. There is no wavelength assigned to indigo. Diffraction is the bending and spreading of waves around an obstacle. Calculate the wavelength of visible light whose frequency is 6.24 x 10 14 Hz.
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