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Is the number of photons in one j of red light 650 nm greater than equal to or less than the number of photons in one j of blue light?
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How is the refractive index of one medium with respect to the otherrelated to the speed of light?
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.
What is the ratio of the speed of light in a vacuum to the speed of light in a different 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.
What will happen to a light ray incident on a glass-to-air boumdary at greater than the critical angle?
Anything greater than critical angle will cause the light to just be reflected.
In E equals mc2 what does mc2 equal?
E represents energy, m represents mass, and c² is a very large number, the square of the speed of light.
When light reflects what two angles are equal?
The angle of incidence is equal to the angle of reflection.
Light intensity is?
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.
When comparing a beam of red light and a beam of green light which beam contains the greater number of photons?
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.
Is the speed of darkness greater than the speed of light?
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.
Which photons have greater energy those associated with microwaves or those asociated with visible light?
Visible light
What do light sensors do?
Light sensors measure the number of photons or the energy of light hitting the sensor.
What type of energy is useful in light?
Light is energy. Light is made of massless particles called photons that travel at the speed of light. Photons at a given frequency carry energy equal to the Planck constant times the photon's frequency.
Light is a wave that carries energy a light source emits a countless number of?
photons
Do fire flames make photons?
Photons are pieces of light. If you see a light, then there are photons.
How is intensity of light related to photons?
Increasing the intensity of light will increase the number of photons arriving per second. Increasing intensity has no effect on photon energy.
What do light sensors measures?
Light sensors measure the number of photons or the energy of light hitting the sensor.
Is there a light stronger than Gamma?
The highest energy photons are described as Gamma. But in terms of the strength, there are more light sources that we encounter everyday of a greater intensity than gamma, as intensity is a measure of the number of photons arriving over an area in a given time. Therefore, visible light and infra-red from the sun are much more intense than the gamma we encounter everyday, as gamma photons are few and far between.
Is there any kind of speed greater than light?
no...but there are particles which have speeds closer to light,like photons,god particle(matter-wave)particle
