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The refractive index of any substance is(speed of light in vacuum)/(speed of light in that substance) .The number is greater than ' 1 ' in any material medium.
This is called the index of refraction. When light crosses the boundary between mediums (media) with different indices, it is bent (refracted).It's usually defined the other way around ... the ratio of the speed of light in vacuum to its speed in the medium. Since the speed of light is greater in vacuum than in any medium, the number is always greater than 1. It's referred to as the "refractive index" of the medium.
Anything greater than critical angle will cause the light to just be reflected.
E represents energy, m represents mass, and c² is a very large number, the square of the speed of light.
The angle of incidence is equal to the angle of reflection.
Neither. The beams of red light and green light will have the same number of Photons, as energy is only related to frequency. The number of Photons is dependent on the intensity of the light beams.
Photons associated with visible light have greater energy than those associated with microwaves. Visible light photons have higher frequencies and shorter wavelengths, while microwave photons have lower frequencies and longer wavelengths. The energy of a photon is directly proportional to its frequency, so higher frequency photons carry more energy.
Darkness is only the absence of light. The 'speed of darkness', or the speed at which darkness 'propagates' (even though only the absence of photons is propagating) is therefor equal to the speed of light.
Light is composed of quanta called photons. The more photons, the greater the intensity. To see the slightest flicker of green light (the color to which our eyes are most sensitive), the minimum number of photons is six.
The number of photons in a beam of light depends on the intensity and energy of the light. In general, there can be trillions to quadrillions of photons in a beam of visible light.
The intensity of light is directly related to the number of photons present. Higher intensity light has more photons, while lower intensity light has fewer photons. Each photon detected carries a discrete amount of energy that contributes to the overall intensity of the light.
The light must consist of photons with energy equal to or greater than the work function of the metal to cause the emission of electrons through the photoelectric effect. The intensity of the light does not play a significant role in the emission of electrons, only the energy of individual photons matters.
Light sensors measure the number of photons or the energy of light hitting the sensor.
Yes, brighter light typically means more photons are present because brighter light has a higher intensity, which is measured by the number of photons hitting a given area over time. So, in a brighter light source, there are indeed more photons emitted.
Blue light waves have higher energy compared to red light waves because blue light has a shorter wavelength. This means that blue light photons have greater energy levels than red light photons.
Light sensors measure the number of photons or the energy of light hitting the sensor.
Amplitude affects the brightness of light, with greater amplitudes producing brighter light. When the amplitude of light changes, the number of photons reaching the retina changes, influencing how we perceive the intensity of the light. Our perception of light intensity is directly related to the amplitude of light waves.