0
The half period zone is provided by an optical device known as Zone plate,The zone plate is so called because it is constructed following Fresnel zone law.It is simply a plane parallel glass plate having concentric circles of radii accurately proportional to the square roots of the consecutive natural numbers 1,2,3......etc. The even or odd order annular space between the circles are completely dark.
What else can I help you with?
How is a plane wave front is divided into half period zones?
A plane wave front is divided into half period zones based on the distance a wave travels in half a period of oscillation. This division helps in analyzing wave behavior, especially in interference and diffraction phenomena. The concept is commonly used in wave optics to understand the wave nature of light.
A wave front has the form of a what?
A wave front is an imaginary surface corresponding to the points of a wave that vibrate in unison. The can be of three types namely spherical, cylindrical or plane.
What will be the shape of wave front of light coming from a point source place at infinity?
The wave front of light coming from a point source at infinity will be planar, since the light rays will be essentially parallel as they reach the observer.
How is a wave front different from a ray?
Ray goes along a straight line. Wavefront spreads equally in all directions. Ray is always normal to the wavefront. Based on ray concept the first law of reflection will be stated as: The incident ray, the reflected ray and the normal all the three lie in the same plane. But by wave front concept we have to state the same with an alteration The incident wavefront, the reflected wavefront and the reflecting surface all the three are perpendicular to the same plane.
How do you find wave period with wavelength and wave speed?
Wave period can be found by dividing the wavelength by the wave speed. The formula is: Period = Wavelength / Wave Speed. The period represents the time it takes for one wave cycle to pass a given point.
How is a plane wave front is divided into half period zones?
A plane wave front is divided into half period zones based on the distance a wave travels in half a period of oscillation. This division helps in analyzing wave behavior, especially in interference and diffraction phenomena. The concept is commonly used in wave optics to understand the wave nature of light.
A wave front has the form of a what?
A wave front is an imaginary surface corresponding to the points of a wave that vibrate in unison. The can be of three types namely spherical, cylindrical or plane.
What is ground plane?
A ground plane is use in radio where the wave length is less than 1 half wave. It produced a false ground (Earth plane) making an image of a 1/4 wave signal reflect on to the aerial creating a half wave image. This improves the efficiency or the aerial, extending it's range. Ground planes are used when the wavelength if the aerial is short or when the earth does not provide a good enough electrical path to ground. They can also be used to distort the polar pattern of the signal.
What is the function of a capacitor in the half wave rectification?
to smooth the output of the half-wave rectifier from 1/2 an AC cycle per period to a constant voltage.
What will be the shape of wave front of light coming from a point source place at infinity?
The wave front of light coming from a point source at infinity will be planar, since the light rays will be essentially parallel as they reach the observer.
Comparision between half wave and full wave rectifier?
A half wave rectifier conducts on every other cycle. The output is a train of half sine cycles, at a period equal to the input period. At 60 Hz, the period is 16.7 ms. Each half cycle (8.3 ms) will be interleaved with periods (8.3 ms) of no voltage. If you filter the output with a capacitor, you get DC - at no load, the DC will be the peak value less the forward bias voltage of the diode - at some load, the DC will fluctuate between that peak value and some value dependent on the size of the capacitor and the current draw. Again, the period (of this nearly sawtooth waveform) will be the input period. A full wave rectifier conducts on every cycle. The output is a train of half sine cycles, at a period equal to half the input period. At 60 Hz, the period is 8.3 ms. Each cycle (8.3 ms) will be connected to the preceding cycle with no intervening delay. Each cycle will pulse in the same direction, instead of in alternating directions. If you filter the output with a capacitor, you get DC - at no load, the DC will be the peak value less the forward bias voltage of the diode - at some load, the DC will fluctuate between that peak value and some value dependent on the size of the capacitor and the current draw. Again, the period (of the nearly sawtooth waveform) will be half the input period. Since the full wave output waveform is twice the frequency (half the period) of the half wave output, the capacitor can be about half its required value for the half wave circuit in order to achieve the same level of filtering.
The time it takes two successive crests of an ocean wave to pass a given point is called a?
A wave length.
What is the reciprical of the period of a sound wave?
The reciprocal of the period of ANY wave is the wave's frequency.
How is a wave front different from a ray?
Ray goes along a straight line. Wavefront spreads equally in all directions. Ray is always normal to the wavefront. Based on ray concept the first law of reflection will be stated as: The incident ray, the reflected ray and the normal all the three lie in the same plane. But by wave front concept we have to state the same with an alteration The incident wavefront, the reflected wavefront and the reflecting surface all the three are perpendicular to the same plane.
How do you find wave period with wavelength and wave speed?
Wave period can be found by dividing the wavelength by the wave speed. The formula is: Period = Wavelength / Wave Speed. The period represents the time it takes for one wave cycle to pass a given point.
How does the motion of a plane wave differ from the motion of a circular wave?
A plane wave is characterized by flat wavefronts that travel in a single direction, while a circular wave has wavefronts that move outward in all directions from a central point. The motion of a plane wave is linear and uniform, whereas the motion of a circular wave is radial and diverging.
How does wave speed relate to wavelength and period?
Wave speed is dependent on both wavelength and period. The relationship is described by the formula: wave speed = wavelength / period. As wavelength increases, wave speed also increases. Conversely, as period increases, wave speed decreases.
