Earth's Pulse
The Schumann Resonance
The planet has a heartbeat. The cavity between the Earth's surface and the ionosphere rings at about 7.83 cycles a second, struck ceaselessly by lightning the world over. It is the note the Earth has hummed since long before there were ears to hear it. Below is that note, generated live for you.
The Schumann resonance — the Earth's electromagnetic heartbeat, on the alpha-theta border of the meditative mind. Press play and let it ground the read.
The live field
This is the resonance happening right now, read by observatory stations that watch the Earth-ionosphere cavity. Each bright horizontal line is a Schumann harmonic; the brighter and busier the bands, the more charged the planetary field.
Loading the live field… Shown with credit; this is an observatory's image, not a Numen sensor. The bright horizontal bands are the Schumann harmonics; brighter and busier means a more active field.
What you are hearing
7.83 Hz is below the floor of human hearing (about 20 Hz), so it cannot be played to you straight — you would feel it before you heard it. So the tone you hear is a carrier you can hear, pulsed at the Earth's rate: the rhythm of the on-and-off is the 7.83 Hz itself. Choose Speaker for that pulse on any device, or Headphones to let the beat form between two tones, one in each ear.
The resonance was predicted by the physicist Winfried Schumann in 1952 and measured a decade later. It is not one note but a ladder — 7.83 Hz, 14.3 Hz, 20.8 Hz, 27.3 Hz, 33.8 Hz — the fundamental and its overtones, the same way a struck bell rings in more than one pitch.
As above, so below
Here is the part that is hard to call coincidence. The brain at the threshold of meditation runs in the alpha-to-theta band — roughly 4 to 12 cycles a second. The Earth's fundamental, 7.83, sits exactly on that border. The frequency of the ground beneath you and the frequency of the quiet mind are the same number. The Hermetic axiom — as above, so below — is, here, not metaphor but measurement.
How to use it
- Before a reading — let it play low underneath while you settle, so you arrive grounded rather than scattered.
- In meditation or breathwork — a steady floor to return to when the mind wanders.
- For rest — low volume, the speaker pulse, as you fall toward sleep.
Honest note: the resonance itself and its 7.83 Hz frequency are settled physics. The claim that listening entrains the body or mind to it is affirmed in the meditative and energetic traditions and reported by many who practice with it, but it is not established in mainstream science. We give you the true tone and let your own experience be the judge — which is the only authority that has ever mattered in this work.