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Sine Wave A 440 Hz Concert Pitch for Ten Hours
Stop your brain from overthinking. You don't need an app. Ten hour Sine wave with no overtones which is called pure as it is only the fundamental frequency.
Vimeo
A year through the distant eyes of meteorological satellite Himawari-8 – a hypnotic stream of Earth's beauty, fragility and disasters. Animation of satellite irradiation scan measurements, scientific data by meteorological satellite Himawari-8 courtesy of JMA/BoM/NCI.