Spectrum is the dispersal of white light (visible wavelengths), coming from the Sun after passing through the prism, into a band of seven colors since it is a continuous blend of seven colors. Typically, it also imparts the unwanted chromatic aberration in lenses. Electromagnetic spectrum is broadly termed for the full band of the solar radiation from the Sun. light from the Sun consists of tiny particles known as photons which travel with the speed of light at 300,000,000 meters per second.
Depending upon the energy they carry are reflected, passed or absorbed. If they are reflected back and come into our eye we see the illuminated body from where it is reflected. Transparent materials allow them to pass through like glass and water. Black bodies absorb them, so that are not seen once they have been absorbed. Reflection, passing through or absorption all depends on the energy of the radiation.
Light has its wave nature also. The measurements based on the wavelengths helps to explain the behavior of light after striking the leaf. Wavelengths of blue light travel more slowly than wavelengths of red light in the transparent media. Red light due to its largest wavelength (in the visible spectrum) is absorbed in the chlorophyll present in the leaf. The same is the case with the blue light due to its longest wavelength also. Green light lying in between the two colors is allowed to pass through or is reflected.
Visible light is a minor part of electromagnetic spectrum which is made up of electric field and magnetic field. The two fields are at right angle to each other. Explanation of some of the properties of visible electromagnetic spectrum is possible taking into account its wave nature while particle nature helps in the justification of some others properties. Hence light has both the particle and the wave nature, also known as wave – particle duality.
Depending upon the energy they carry are reflected, passed or absorbed. If they are reflected back and come into our eye we see the illuminated body from where it is reflected. Transparent materials allow them to pass through like glass and water. Black bodies absorb them, so that are not seen once they have been absorbed. Reflection, passing through or absorption all depends on the energy of the radiation.
Light has its wave nature also. The measurements based on the wavelengths helps to explain the behavior of light after striking the leaf. Wavelengths of blue light travel more slowly than wavelengths of red light in the transparent media. Red light due to its largest wavelength (in the visible spectrum) is absorbed in the chlorophyll present in the leaf. The same is the case with the blue light due to its longest wavelength also. Green light lying in between the two colors is allowed to pass through or is reflected.
Visible light is a minor part of electromagnetic spectrum which is made up of electric field and magnetic field. The two fields are at right angle to each other. Explanation of some of the properties of visible electromagnetic spectrum is possible taking into account its wave nature while particle nature helps in the justification of some others properties. Hence light has both the particle and the wave nature, also known as wave – particle duality.
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