Search results
Results From The WOW.Com Content Network
Due to unpredictable and intermittent long-distance propagation, usually achieved by a combination of ionospheric conditions, beacons are very important in providing early warning for 6-meter band (50 MHz) openings. Beacons traditionally operate in the lower part of the band, in the range 50.000 MHz to 50.080 MHz.
An explanation given as to why people choose encounter frequency is that in the case of frequencies, the subjects are given vivid descriptions, while with probabilities only a dry number is given to the subject. [19] Therefore, in the case of frequency, subjects are given more recall cues. This could in turn mean that the frequency encounters ...
This list consists of people who reached the summit of Mount Everest more than once. By 2013, 6,871 summits have been recorded by 4,042 people. [1] [2] By the end of 2016 there were 7,646 summits by 4,469 people. [3] In 2018 about 800 people summited, breaking the record for most in one year compared to 2013, in which 667 summited Mount Everest ...
The main cause behind frequency illusion, and other related illusions and biases, seems to be selective attention. Selective attention refers to the process of selecting and focusing on selective objects while ignoring distractions. [5] [6] [7] This means that people have the unconscious cognitive ability to filter for what they are focusing on.
Clairvoyance – The ability to see things and events that are happening far away and locate objects, places, and people using a sixth sense. Dowsing – The ability to locate water, sometimes using a tool called a dowsing rod. [10] Dermo-optical perception – The ability to perceive unusual sensory stimuli through the skin.
Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals , radio waves, and light. For example, if a heart beats at a frequency of 120 times per minute (2 hertz), the period—the time interval between beats—is half a second (60 ...
The selection of the sample rate was based primarily on the need to reproduce the audible frequency range of 20–20,000 Hz (20 kHz). The Nyquist–Shannon sampling theorem states that a sampling rate of more than twice the maximum frequency of the signal to be recorded is needed, resulting in a required rate of greater than 40 kHz.
It is a common understanding in psychoacoustics that the ear cannot respond to sounds at such high frequency via an air-conduction pathway, so one question that this research raised was: does the hypersonic effect occur via the "ordinary" route of sound travelling through the air passage in the ear, or in some other way?