The intensity method in which the intensity of the ultra-sound is measured after it has passed through the test piece, is the oldest application of ultrasonic waves for non-destructive testing. It dates back to 1930 and was originated by Sokolov and Mühlhäuser [686, 523].

1 : the quality or state of being intense especially : extreme degree of strength, force, energy, or feeling. 2 : the magnitude of a quantity (such as force or energy) per unit (as of area, charge, mass, or time)

The definition of intensity is the quality of being very strong, concentrated or difficult or the degree to which something is difficult or strong. An example of intensity is having the ability to run miles on end at a top speed. An example of intensity is how quickly a treadmill is moving.

Light intensity refers to the strength or amount of light produced by a specific lamp source. It is the measure of the wavelength-weighted power emitted by a light source.

The SI unit for intensity is watts per square meter (W/m2). For example, infrared and visible energy from the Sun impinge on Earth at an intensity of 1300 W/m2 just above the atmosphere. For example, a 90 decibel sound level corresponds to an intensity of 10−3 W/m2.

Frequency is how often you exercise. Usually we measure this by number of days each week. Intensity is how hard your exercise. We might categorize this as low, moderate, or high intensity. Time refers to the time of day you exercise and how long each session lasts.

If the only thing one changes is the frequency of the photons, then doubling the frequency will double the intensity. Alternately, doubling only the emission rate, or focusing the photons to hit half the area will also double the intensity.

The Decibel Scale That is, the threshold of human hearing is 0 decibels. Each factor of 10 in intensity corresponds to 10 dB. The sound intensity level is not the same as sound intensity—it tells you the level of the sound relative to a reference intensity rather than the actual intensity.

Measuring the intensity of a source is sampling the number of photons emitted from the source in some particular time period, which is directly related to the number of disintegrations in the same time period (the activity).

Intensity refers to the strength measured with constraint of a unit area. Intensity is power/area. If you keep the number of photons per second the same then. power is proportional to frequency so intensity is proportional to frequency.

The amount of energy is directly proportional to the photon’s electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon’s frequency, the higher its energy. Equivalently, the longer the photon’s wavelength, the lower its energy.

Gamma rays

Up to the end of the microwave spectrum, most all modern conveniences that use electromagnetic energy in one way or another are in the lower frequency region, including millimeter waves, cell phones, WiFi, microwave ovens, space and terrestrial communications, radar for airports and military uses, AM and FM radio.

Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E). The spectrum can be ordered according to frequency or wavelength.

Electromagnetic radiation is made when an atom absorbs energy. The absorbed energy causes one or more electrons to change their locale within the atom. When the electron returns to its original position, an electromagnetic wave is produced. These electrons in these atoms are then in a high energy state.

The killing and destructive power of electromagnetic radiation can be used constructively for curing the incurable diseases by eradicating the disease producing pathogens and micro organisms like bacteria, virus & fungi.

These include nerve regeneration, wound healing, graft behavior, diabetes, and myocardial and cerebral ischemia (heart attack and stroke), among other conditions. Preliminary data even suggest possible benefits in controlling malignancy.

They are also responsible for transmitting energy in the form of microwaves, infrared radiation (IR), visible light (VIS), ultraviolet light (UV), X-rays, and gamma rays. Each region of this spectrum plays an important part in our lives, and in the business involving communication technology.