The Spacetime Metric

The physics of empty space,explained from the ground up.

Zero-point energy, the vacuum as a medium, plasma, fusion in a lattice, and the engineering of spacetime. From a first picture anyone can hold to the research frontier.

See what you will learnStart with Lecture 0

Why this site exists

Some of the most interesting physics of the last century was published, measured, and then left out of the textbooks: the energy of empty space, the vacuum as a medium you can shape, fusion inside a metal lattice, the mathematics of a warp bubble, and the programmes now trying to build on them. The Spacetime Metric brings that work into the open and teaches it from the ground up, from a first picture anyone can hold to the research frontier, with every claim placed on a maturity scale and its next experiment named. It also exists to grow the people who will build what comes next: the future fusion engineers, warp-drive engineers, plasma and vacuum experimentalists, and the trades around them.

Start here

A circling charge radiates, so the Bohr atom should pour out its energy and collapse into the nucleus in about ten picoseconds. It does not.

Hal Puthoff's 1987 paper gives the mechanism: the power the orbiting electron radiates away and the power it absorbs from the zero-point field of the vacuum balance, and the radius where they balance is exactly the Bohr radius.

It is a stochastic-electrodynamics result at the level of the Bohr theory. It does not replace quantum mechanics and it does not derive the full hydrogen spectrum.

Published and peer-reviewedRead the paper: the ground state of hydrogen as a balance with the vacuum →

What you will learn

The full map, with routes →

Part I

How to know

  1. 01The evidence ladder
  2. 02The reference documents and the institutional record

Part II

The medium

  1. 03What the vacuum is
  2. 04Casimir physics and vacuum-force engineering
  3. 06The vacuum at cosmic scale
  4. 07The vacuum as a quantum fluid

Part III

Energy from the vacuum

  1. 05Energy from the vacuum
  2. 08Fusion machines: pinches, focus devices and inertial drivers
  3. 09Lattice confinement fusion

Part IV

Mass, inertia and gravity

  1. 10Inertia and gravity from the vacuum
  2. 11Gravity control and superconductors
  3. 12Inertial mass reduction, the Navy patents and transmedium craft

Part V

Engineering the metric

  1. 13The metric, warp drives and wormholes
  2. 14Wormholes, energy conditions and the negative-energy budget
  3. 15Scalar waves and the field behind the fields

Part VI

The craft and the ledger

  1. 16Plasmoids, charge clusters and the orbs
  2. 17The unified picture

Choose how to learn

Watch

13 lectures

About 10 hours of visual teaching, with captions and transcripts.

Read

17 chapters

Experiments, equations, and the ideas that connect them.

Go deep

6 drill-downs

One idea from a first picture to the research frontier, in six levels.

Study

36 courses

Six levels, from first principles to research preparation.

Imagine

12 domains

Scenarios exploring the effects of proposed energy and spacetime technologies.

Build

39 engineering cards

What to build next, the results it rests on, and the measurement that settles it.

Follow

763 people and channels

Who is doing the work, and where to follow it.

Ages 8–12

14 young-explorer lessons

The same physics, retold for younger readers, with something to try at home.