Effective reach is defined as the number of people or the percentage of the audience that receives an advertising message with a frequency equal to or greater than the effective frequency.

Constructive interference occurs when the crests of one wave overlap the crests of the other wave, causing an increase in wave amplitude. Destructive interference occurs when the crests of one wave overlap the troughs of the other wave, causing a decrease in wave amplitude.

To calculate frequency, divide the number of times the event occurs by the length of time. Example: Anna divides the number of website clicks (236) by the length of time (one hour, or 60 minutes).

Explanation: Upon the superimposition of two waves the resultant wave formed depends on the phase difference between the waves and their respective amplitude.

Destructive interference occurs when waves come together in such a way that they completely cancel each other out. When two waves interfere destructively, they must have the same amplitude in opposite directions.

If we add these two waves together, point-by-point, we end up with a new wave that looks pretty much like the original waves but its amplitude is larger. This situation, where the resultant wave is bigger than either of the two original, is called constructive interference.

Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero.

When two light waves traveling from opposite directions meet they experience wave interference. This happens when they are traveling along the same medium.

What happens when two waves, such as waves on a lake, come from different directions and run into each other? They may have various patterns where they overlap, but each wave continues with its original pattern away from the region of overlap. A student attaches one end of a Slinky to the top of a table.

Explanation : (1) Constructive interference occurs when two waves are moving in the same direction. As a result, the amplitude gets larger.

Constructive interference occurs when the maxima of two waves add together (the two waves are in phase), so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes. For interference of light waves, such as in Young’s two-slit experiment, bands of bright and dark lines will appear.

The difference between constructive criticism and destructive criticism is the way in which comments are delivered. Although both forms are challenging your ideas, character or ability, when someone is giving destructive criticism it can hurt your pride and have negative effects on your self-esteem and confidence.

For any wave, the wavelength is the distance between two consecutive peaks.

The structure of a wave The distance from one peak or trough to the next is called wavelength. It is denoted with the Greek letter lambda (λ). The greater the wavelength, the lower the wave’s peak.

A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.

The frequency of a ware is the number of complete waves that pass a given point in a certain amount of time. Frequency can also be described as the number of vibrations ser second. Frequency is measured in units called hertz (Hz). ae oration that occurs every second has a frequency of 1 Hz.

The matter through which the wave travels is called the medium (plural, media). The medium in the water wave pictured above is water, a liquid. Particles of the medium don’t actually travel along with the wave. Only the energy of the wave travels through the medium.

Explain why the beach is not completely submerged and why the middle of the ocean has not yet been depleted of its water supply. Ocean waves can only bring energy to the shore; the particles of the medium (water) simply oscillate about their fixed position. As such, water does not pile up on the beach.

The speed of a wave is dependant on four factors: wavelength, frequency, medium, and temperature. Wave speed is calculated by multiplying the wavelength times the frequency (speed = l * f). Certain conditions make the following calculations easy. speed is constant in a given medium.

In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels. In water waves, energy is transferred through the vibration of the water particles.