ScienceThe ProfessorIntermediate
Spacetime and the Fifth Dimension course icon

Spacetime and the Fifth Dimension

Like Duolingo, but for Spacetime and the Fifth Dimension. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

For the part of you with thirty open tabs that never became anything.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Tesseract Tim
Spacetime and the Fifth Dimension
with Tesseract Tim
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in Spacetime and the Fifth Dimension

  • Time is a spatial coordinate where past and future exist simultaneously
  • A 'brane' is a 3D membrane floating in a higher-dimensional space
  • Moving through time in 4D is like walking from one end of a hallway to the other
  • The 'bulk' is the higher-dimensional container for multiple branes
  • Time as a physical direction rather than a sequence
  • The relationship between the 3D brane and the 5D bulk
  • A worldline is the physical path an object traces through spacetime
  • Higher dimensions allow you to see the start and end of a life as a single shape
  • Light and sound are trapped on our 3D brane
  • Gravity is a distortion of spacetime that 'leaks' into the bulk
  • Gravity's unique ability to cross dimensions
  • A Tesseract projects 4D geometry into a 3D form we can visualize
  • Perception of worldlines by higher-dimensional beings
  • It translates time into physical 'rooms' or 'slots' for navigation
  • The function of a Tesseract as a 3D projection
  • Eternalism treats time as a physical dimension where all moments exist permanently.
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Spacetime and the Fifth Dimension the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Mapping the Fourth and Fifth Dimensions

What term do physicists use to describe our 3D universe when it is viewed as a surface in higher dimensions?

Get it right to open this lesson and 11 more in the app.

Course map

Where Spacetime and the Fifth Dimension takes you

Move beyond the three-dimensional world to explore the physics of time travel, the geometry of the bulk, and the logic of predestination paradoxes.

  1. 1

    The Geometry of the Bulk

    • Visualizing Higher Dimensions
    • The Block Universe Theory
  2. 2

    The Logic of the Loop

    • Causality and Predestination
    • Warping Time with Gravity

2 sections · 4 units · 12 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Spacetime and the Fifth Dimension is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Start free

Start Spacetime and the Fifth Dimension today.

Download Tomo, search Spacetime and the Fifth Dimension, and play your first lesson in under a minute.