When it comes to frequency, we are sure many people will think of radio frequency first. True, there is such a type, but in general frequency is used to measure alternating current. To give a more general definition, actually Frequency is a measure of how often an event is repeated. Frequency even has a special unit of measurement and a special measurement formula.
The question of where to use frequency is fundamentally wrong because frequency measures the recurrence of an event. So it is not a tool to use. Of course we encounter sound, radio and light frequencies, but these, like current measurement, are the measurement of the recurrence of the event in question. Come before we confuse even more What is frequency, what are the types Let’s take a closer look at the frequently asked questions.
Let’s start with a basic definition; What is Frequency?
Frequency, which we can also call vibration number, in a unit of time generally defined as 1 second It can be defined as the measurement of how often an event is repeated. It can also be defined as the rotational speed of alternating current in one second. Although there are different types, the basic definition is the same.
How to measure frequency?
Frequency is measured by the number of times an event is repeated in 1 second. According to the International System of Units, hertz is abbreviated Hz. A current with a frequency of 1 Hz means that it repeats itself 1 time in 1 second. A current with a frequency of 3 Hz means that it repeats itself 3 times in 1 second.
It is also possible to measure the frequency measurement over the period. This measurement looks at the time between two repetitions, not how many times the event repeats per second. with the formula f = 1 / T frequency can be found over the period of the current. The result will be the same with both methods.
Multiples of frequency unit:
- 1Hz = Hertz
- 1 kHz = 1000 Hz = kilohertz
- 1 MHz = 1000 kHz = 1000000 Hz = megahertz
- 1 GHz = 1000 MHz = 1000000 kHz = 1000000000 Hz = Gigahertz
Some of the frequency types are:
- audio frequency
- Radio frequency
- light frequency
Audio frequency, also known as abbreviation AF, in Turkish, sound frequency; refers to the range of sound that the human ear can hear. Even though it varies from person to person, a person can hear the sound frequency range is considered to be 20 – 20 thousand Hz. Even if we don’t hear sounds below 20 Hz, we can feel them as vibrations. Sounds above 20,000 Hz, i.e. 20 kHz, can cause hearing loss.
Radio frequency or radio frequency is used to transmit audio and video data in the broadcasting and telecommunications world. Terrestrial broadcasts, satellite broadcasts and cable broadcasts are serviced via radio frequency. The frequency range may also vary depending on the type of broadcast. It can be in the range of 30 – 300 MHz, as well as in the range of 300 MHz – 3 GHz. it could be.
The frequency of light, which we can also define as visible light, refers to the appearance of light that the human eye can perceive. Even if it changes The light frequency that the human eye can see is on average between 430 – 750 THz. In other words, we can see electromagnetic rays called photons in this frequency range with our eyes.
All known frequency ranges:
- Extremely low frequency, known by the abbreviation ELF, in Turkish extremely low frequency; It has a frequency range of 3 – 30 Hz.
- Super low frequency, known by its abbreviation SLF, in Turkish super low frequency; It has a frequency range of 30 – 300 Hz.
- Ultra low frequency, known as abbreviation ULF, in Turkish ultra low frequency; It has a frequency range of 300 Hz – 3 kHz.
- Very low frequency, known as abbreviation VLF, in Turkish very low frequency; It has a frequency range of 3kHz – 30kHz.
- Low frequency, also called abbreviation LF, in Turkish low frequency; It has a frequency range of 30 kHz – 300 kHz.
- Intermediate frequency, known by its abbreviation MF, in Turkish average frequency; It has a frequency range of 300 kHz – 3 MHz.
- High frequency, known by the abbreviation HF, in Turkish high frequency; It has a frequency range of 3 MHz to 30 MHz.
- Very high frequency, known as the abbreviation VHF, in Turkish very high frequency; It has a frequency range of 30MHz – 300MHz.
- Ultra high frequency, also called UHF abbreviation, in Turkish ultra high frequency; It has a frequency range of 300 MHz to 3 GHz.
- Super high frequency, known by the abbreviation SHF, in Turkish super high frequency; It has a frequency range of 3 GHz to 30 GHz.
- Extremely high frequency, known in Turkish by the abbreviation EHF extremely high frequency; It has a frequency range of 30 GHz to 300 GHz.
There is also something called body frequency:
Frankly, it is not possible to say for sure whether it is a subject accepted by the entire scientific world, but in 1920 a doctor named Royal Rife discovered with a tool called a frequency generator There is a study in which it destroys cancer cells and some viruses by using currents in different frequency ranges. Later, many new studies were carried out on the vehicle in question.
dr. Written by Robert O. Becker in 1998 In a book called The Body Electric, There has been mentioned a connection between human health and body electricity. According to this, while the body frequency of a healthy person is between 62 – 72 MHz, it drops to 57 MHz in case of flu, 50 MHz in bacterial infections and 42 MHz in cancer. Positive thoughts are said to increase this frequency by 10 MHz, while negative thoughts decrease it by 12 MHz.
According to the same book, the frequency range for canned food or processed products is 0 MHz. Fresh herbs have a frequency range of 20 – 27 MHz, while dried herbs have a frequency range of 12 – 22 MHz. Vegetable oils, on the other hand, have a range of 52 – 320 MHz. The author recommends keeping our frequency range high by staying positive, taking walks in nature, and eating healthy.
It is the measurement of how many times per second many events, especially alternating current, are repeated. what is frequency, what are the types We covered important details you need to know about the topic by answering frequently asked questions.
Source: Web Tekno
Ashley Johnson is a science writer for “Div Bracket”. With a background in the natural sciences and a passion for exploring the mysteries of the universe, she provides in-depth coverage of the latest scientific developments.