Zoom through the universe

From atomic nuclei to galaxy clusters with one slider.

Interactive

Scale10⁰m

Prefix—

Around this sizeHuman

Zoom (power of ten)10^0 m

The math, with your numbers

10^{0} = 1 \quad \text{(no multiplying at all — just one metre)}

Each step of the slider makes everything 10 times bigger or smaller.

Try this

→Start at 'Human' and drag left. How many steps of ten until you reach an atom?
→Drag right until you see Earth. How many times bigger than you is it (count the powers)?
→Notice how the slider covers 42 powers of ten. No ordinary ruler could ever do that.

Want to know why it behaves like this?

The lesson “Units & Powers of Ten” explains it step by step: Why do physicists write numbers like 3 × 10⁸?

Zoom through the universe

From atomic nuclei to galaxy clusters with one slider.

Zoom through the universe

Interactive

Scale10⁰m

Prefix—

Around this sizeHuman

Zoom (power of ten)10^0 m

The math, with your numbers

10^{0} = 1 \quad \text{(no multiplying at all — just one metre)}

Each step of the slider makes everything 10 times bigger or smaller.

Try this

→Start at 'Human' and drag left. How many steps of ten until you reach an atom?
→Drag right until you see Earth. How many times bigger than you is it (count the powers)?
→Notice how the slider covers 42 powers of ten. No ordinary ruler could ever do that.

Want to know why it behaves like this?

The lesson “Units & Powers of Ten” explains it step by step: Why do physicists write numbers like 3 × 10⁸?