Is embedding the quantum tunneling simulator free?

Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Quantum Tunneling Simulator by LK Forge" credit line that comes with the embed code.

What can visitors do with the embedded simulator?

They can set the particle’s energy, the height of the barrier and its width, then watch the wave function decay through the barrier and emerge with reduced amplitude on the far side. A live panel shows the exact transmission probability, the reflection probability and whether the particle is tunneling (energy below the barrier) or passing over the top.

Does the embed teach the transmission coefficient?

Yes. The transmission is computed exactly from the rectangular-barrier result, so students can watch it fall almost exponentially as the barrier thickens, surge as it thins, and stay below 100 percent even when the energy is above the barrier — a purely quantum over-barrier reflection with no classical analogue.

What iframe height should I use, especially on mobile?

The snippet ships with height="820", which is tall enough that the barrier diagram, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 820 is the safe default across screen sizes.

Where can I embed it — WordPress, Wix, Squarespace, Notion?

Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/quantum-tunneling/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.

Does the embedded simulator track visitors or set cookies?

No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.

Widgets

How to Add a Quantum Tunneling Simulator to Your Website

LK Forge · 4 min read · Updated September 2026

You can add a full quantum tunneling simulator to any website, blog, or classroom page with a single line of code — free, with no sign-up, no plugin, and no script to install. Visitors fire a particle at a barrier it cannot classically cross and watch part of its wave get through. This guide covers the fastest way to embed the Quantum Tunneling Simulator, what it teaches, and where it works.

The quickest way: paste one embed snippet

An embed is just an <iframe> that loads the simulator from lkforge.com, plus a small credit line. Copy this into your page’s HTML where you want the widget to appear:

<iframe src="https://lkforge.com/embed/quantum-tunneling/"
        width="100%" height="820" loading="lazy"
        style="border:0;max-width:560px"
        title="Quantum Tunneling Simulator by LK Forge"></iframe>
<p><a href="https://lkforge.com/tools/physics/quantum-tunneling/">Quantum Tunneling Simulator</a>
   by <a href="https://lkforge.com/">LK Forge</a></p>

The <iframe> is the live simulator; the <p> underneath is a plain credit link. Keep that line — the visible link is what keeps the widget free to embed. You can also copy this exact code straight from the LK Forge widget gallery.

What the widget shows

The simulator opens with a wave already meeting a barrier, so a visitor sees the effect immediately and can then take control:

Particle energy: raise or lower the energy relative to the barrier height.
Barrier height: make the wall taller or shorter than the particle's energy.
Barrier width: thin the wall and watch the transmission surge, thicken it and watch it collapse.
Live readouts: the exact transmission and reflection probabilities and whether the particle is tunneling or going over the top.

Pick the right height

The snippet uses height="820", which fits the diagram, the sliders and the readouts without clipping even on a narrow phone, where they stack into one column. On a wider page the widget centres within its max-width:560px. That single height works across screen sizes, so there is nothing to tweak for mobile.

Where it works

Because it is a standard iframe, the embed works anywhere you can add HTML:

WordPress: add a Custom HTML block and paste the snippet.
Squarespace: use a Code / Embed block.
Wix: add an Embed HTML / iframe element.
Ghost: insert an HTML card.
Notion: paste the /embed/quantum-tunneling/ URL and choose "Create embed".
Plain HTML, an intranet, or a lesson page: paste the snippet straight into the markup.

That’s the whole job. Copy the embed code from the widget gallery and paste it wherever a physics lesson or a blog post on quantum mechanics, barrier penetration or the scanning tunneling microscope needs a barrier students can actually shrink.

Grab the embed code from the LK Forge widget gallery — free, no sign-up.

Open the Quantum Tunneling Simulator

Frequently asked questions

Is embedding the quantum tunneling simulator free?: Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Quantum Tunneling Simulator by LK Forge" credit line that comes with the embed code.
What can visitors do with the embedded simulator?: They can set the particle’s energy, the height of the barrier and its width, then watch the wave function decay through the barrier and emerge with reduced amplitude on the far side. A live panel shows the exact transmission probability, the reflection probability and whether the particle is tunneling (energy below the barrier) or passing over the top.
Does the embed teach the transmission coefficient?: Yes. The transmission is computed exactly from the rectangular-barrier result, so students can watch it fall almost exponentially as the barrier thickens, surge as it thins, and stay below 100 percent even when the energy is above the barrier — a purely quantum over-barrier reflection with no classical analogue.
What iframe height should I use, especially on mobile?: The snippet ships with height="820", which is tall enough that the barrier diagram, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 820 is the safe default across screen sizes.
Where can I embed it — WordPress, Wix, Squarespace, Notion?: Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/quantum-tunneling/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.
Does the embedded simulator track visitors or set cookies?: No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.