It is known that the human body can generate mechanical vibrations at very low frequencies, so-called infrasonic waves. Such low-frequency vibrations are produced by physiological processes—heartbeats ...
The circuit was created to produce an oscillator operating at low frequency for use in the production of electronic music and experimenting and testing tone controls. Oscillator – an electronic ...
The figure shows a schematic for an oscillator amplitude-control servo system. The circuit creates a closed-loop system that supplies a fixed and adjustable peak-to-peak amplitude ac signal centered ...
Bloch oscillations are periodic oscillations of quantum particles in a repeating energy "landscape" (e.g., a crystal lattice) ...
This paper examines the complex evolution and metamorphosis of the global, continental, and national political economies over the period 1940 to 2010. The data used are Maddison's, mostly for 1940–60, ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 119, No. 30 (July 26, 2022), pp. 1-12 (12 pages) Sleep can be distinguished from wake by changes in brain ...
Deep-brain stimulation can improve symptoms of Parkinson’s disease, but it does not work for all patients. Now, a paper in the August 21 Proceedings of the National Academy of Sciences suggests that ...
Owing to the opposite vertical orientation with respect to the plane of Earth's rotation across the equator from the Southern Hemisphere to Northern Hemisphere, the equator serves as a waveguide that ...
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