What is the cosmic frequency? What is the frequency of the earth? ?

What are you talking about? I understand the meaning of the question you want to ask ~

Frequency means: the number of times a substance completes periodic changes in 1 second is called frequency, which is often expressed by F.

The unit of frequency in physics is hertz (Hz), and it is also commonly used in kilohertz (kHz) or megahertz (MHz) or GHz. 1 kHz = 1000 Hz， 1 MHz = 100000Hz 1 GHz = 65438+。 Wave velocity = wavelength * frequency. The electricity used in China is sinusoidal alternating current with a frequency of 50Hz, which means that it changes periodically 50 times in one second.

In addition, the sound we hear is also a wave with a certain frequency. The frequency range of human hearing is about 20-20-20000HZ. Beyond this range, our ears will not notice it.

In astronomical tide science, it is inconvenient to display it in hertz because of the long period of celestial activity. The common frequency unit is cph, that is, it circulates every hour. For example, the period of the most common M2 tidal component is about 12.42 hours, and its frequency is usually expressed as 0.0805 1cph. What is the cosmic frequency? What is the frequency of the earth?

I also read this term in a book, which mentioned that there is a lot of information in the universe. As long as the brain wave is tuned to the cosmic frequency (it is said to be 7.5 Hz between alpha wave and theta wave), you can receive the information of the universe like a radio, and get some enlightenment. I didn't understand either, so I asked. The concept of "matter wave" mentioned in the third floor, I think it should be this. As for the earth frequency, I have only seen the value of 7.

I have supplemented the question and explained the situation. Why haven't I answered them?