What are the 2 factors that the intensity of the light depends on?
This means that the energy per photon of the light depends on its wavelength and velocity.
What are the factors that affect intensity?
Some factors that affect intensity are the distance away from the epicenter, the depth of the earthquake, the population density of the area affected by the earthquake, the local geology of the are, the type of building construction in the area, and the duration of the shaking.
What are the three factors of lighting?
THE FUNDAMENTALS There are three basic types of lighting that work together to light your home: General, Task and Accent.
What factors affect light brightness?
The brightness of a lightbulb is given by its power. P = I2R, and so brightness depends on current and resistance. If the bulbs are identical, they have the same resistance.
Does brightness of light depend on frequency?
In classical electromagnetism, the intensity of light is proportional to the square of the amplitude of the waves. In quantum mechanics it depends of the frequency of the light as well as the number of photons.
What does amplitude of a light wave mean?
The amplitude of a wave tells us about the intensity or brightness of the light relative to other light waves of the same wavelength. Both Wave 1 and Wave 2 have the same wavelength but different amplitudes. The wavelength of light is an important property for it is this that determines the nature of the light.
Why intensity is proportional to square of amplitude?
In fact, a wave’s energy is directly proportional to its amplitude squared because W ∝ Fx = kx2. The definition of intensity is valid for any energy in transit, including that carried by waves. The SI unit for intensity is watts per square meter (W/m2).
What is the relationship between intensity and wavelength?
The intensity (i.e. photon energy or field strength) is related to the characteristics of the wave by Planck’s constant. i.e. the photon energy is inversely proportional to the wavelength. From these equations we now know that: As the frequency increases, so does the energy of the wave (directly proportional)
What is difference between amplitude and intensity?
Students may be confused between amplitude and intensity. While sound intensity is proportional to amplitude, they are different physical quantities. Sound intensity is defined as the sound power per unit area, whereas amplitude is the distance between the resting position and the crest of a wave.