Vintage Chart of the Electromagnetic Spectrum, and Nikola Tesla’s Historic Invention

This is a chart of the electromagnetic spectrum, published by the W.M. Welch Scientific Company in 1944, and posted online about three years ago.  It covers electromagnetic radiation from simple diffraction to cosmic rays, and shows the frequency allocations and their historic use across the spectrum.  (full resolution image is here) When Nikola Tesla established … More Vintage Chart of the Electromagnetic Spectrum, and Nikola Tesla’s Historic Invention

NASA’S Juno Mission and Nikola Tesla’s Discovery in Colorado Springs

Today, July 4, NASA scientists will begin listening for a radio signal, letting them know the Juno Probe has begun orbiting around Jupiter. They are studying activity at its poles to find out how the auroras respond to changes in the solar wind.  According to the European Space Agency, Jupiter’s auroras cover areas larger than … More NASA’S Juno Mission and Nikola Tesla’s Discovery in Colorado Springs

Singing Stars

This is the sound of light signals from stars, transposed into the range of hearing. A technique known as ‘asteroseismology’ makes it possible for scientists to study the internal structure of stars, based on an interpretation of their frequency spectra.  Nikola Tesla believed these light signals are created by the primordial cosmic energy he discovered … More Singing Stars

The Mystery of Cosmic Rays

  Researchers at NASA have been conducting an experiment with a particle collector mounted on the outside of the International Space Station, in an effort to learn more about cosmic rays, the charged particles that fill the universe. They say that telescopes are an invaluable tool to measure photons, tiny particles of light both visible … More The Mystery of Cosmic Rays

Sound of Leonids

The annual Leonid meteor  showers return this weekend (November 17-18, 2012), as the earth passes through dust trails which leave bright streaks as they are set on fire in the upper atmosphere.  For a few seconds the dust trails reflect high-frequency radio signals, making it possible to hear the aetherial, high-frequency sounds of the Leonids … More Sound of Leonids