The Hartmann grid: what geobiologists say about it
The Hartmann grid is said to be an invisible grid rising from the ground, described by Ernst Hartmann, who advised against sleeping on its crossings.
- Grid
- Nodes
- Reported belief
The Hartmann grid at a glance
For geobiologists, the ground is said to be crossed by a regular grid whose crossings would disturb rest; no instrument has ever recorded it.
An invitation to look at the place where you sleep and how you feel there.
Moving a bed or buying a device for a grid that has never been measured settles nothing verifiable.
- Described by
- Ernst Hartmann, 1954
- Measured by an instrument
- Never
What Ernst Hartmann described
Ernst Hartmann first described this grid in 1954, then in a book published in 1964, Krankheit als Standortproblem. He saw “walls” of radiation rising from the ground, aligned with the cardinal points.
Where two lines cross, he placed “nodes” that he considered harmful to anyone sleeping above them. Geobiologists who follow in his footsteps advise moving the bed away from these crossings.
According to Ernst Hartmann
- a grid of “walls” running north–south and east–west
- about 2 m between two lines north–south, about 2.5 m east–west
- lines about twenty centimeters wide
- “nodes” where two lines cross
How geobiologists say they detect it
No device detects this grid: geobiologists say they find it with a pendulum, dowsing rods, or a Lecher antenna, walking slowly through the room. Blind tests carried out with these tools gave no result better than chance; the movement of the pendulum comes from micro-movements that the hand makes unintentionally.
Cosmo-telluric chimneys
Some geobiologists describe “chimneys”: vertical columns where the energies of the ground and the sky are said to meet, often at the crossing of several grids or above underground water. They belong to the same belief as the Hartmann grid and have likewise never been measured.
What research knows
No instrument has recorded this grid and no blind test has confirmed it; geophysicists recognize no known phenomenon in it.
A reported belief, not an established fact: nothing here replaces a measurement or a professional’s advice.
Differences between authors
On the size of the mesh, geobiologists disagree: it is said to vary with the place and the altitude, from 2.5 to 4 meters (about 8 to 13 feet) depending on the geobiologist. The Curry grid, attributed to Manfred Curry, is said to be oriented diagonally to Hartmann’s; some practitioners superimpose the two, others keep only one.
Hartmann himself carried out readings of soil conductivity and magnetic field above the crossings he had located; the correlations he reported have not been found by other teams.
The Hartmann grid: your questions
How can you tell if you sleep on a Hartmann node?
No device can tell you, and in the published blind tests, dowsers did not reliably find their own markings again. If your sleep weighs on you, the box at the top of the page says who to turn to; for your home, the “My home” tool points to what can be measured.
Is the Hartmann grid dangerous?
Nothing establishes it: this grid has never been recorded, nor its effects shown. The worry itself can weigh on you; that is a reason to look for a verifiable explanation rather than a “neutralizing” device.
What is the mesh size of the Hartmann grid?
According to Hartmann, about 2 meters (6.5 feet) in the north-south direction and 2.5 meters (8 feet) in the east-west direction, with lines roughly 20 centimeters (8 inches) wide. These are his figures, never confirmed by a measurement.
What is the difference with the Curry grid?
The Curry grid is said to be oriented diagonally to Hartmann’s. Both belong to the same belief and are located with the same tools.
Sources
- Wikipédia (French), “Réseau Hartmann”read October 15, 2026
- Wikipedia (German), “Hartmann-Gitter”read October 15, 2026
- Wikipedia (English), “Geobiology (pseudoscience)”read October 15, 2026