Runs Locally:
Unlike most apps that rely on cloud servers, this simulation runs the Einsteinian math and visuals directly on your device's processor. This allows for real-time calculation with zero network latency.

The only time we ping the 'outside world' is a single check to see if your target is Land 🪨 or Water 🐟!

Let m be the antimatter mass you choose. The model assumes an equal mass of ordinary matter annihilates with it, so the total annihilated mass is:

Energy release uses mass–energy equivalence:

TNT-equivalent yield is reported in kilotons using the standard convention:

1) Fireball and Thermal Radius

The physical plasma fireball scales according to the Cube-Root Law, reflecting volumetric energy density. However, Thermal Injury (3rd degree burns) scales more aggressively. This is because larger weapons emit their thermal pulse for a longer duration. Thermal injury depends on the total radiant exposure over time, so the danger zone grows faster than the fireball itself.

This simulation uses the empirical scaling factor (Y^0.4), as effective burn range depends on complex environmental conditions such as burst geometry, atmospheric visibility, and humidity.

*Where K_th is the Thermal Constant calibrated to historical test data [Glasstone & Dolan, 1977].

2) Deadly Gamma Radiation Radius

In a vacuum, radiation scales approximately according to the Inverse Square Law. In air, the atmosphere acts as a heavy shield, so gamma rays grow more slowly with yield. High-energy photons suffer from exponential attenuation as they hit air molecules (nitrogen and oxygen).

This simulation uses the conservative scaling factor (Y^0.15), as effective range depends on many variable parameters such as burst altitude, photon spectrum, and dose criterion.

*Where K_γ is the Gamma Constant calibrated to historical test data [Glasstone & Dolan, 1977].

3) The Blast Wave & Atmospheric Displacement

When the antimatter annihilates, it heats the surrounding air instantly. This rapidly expanding gas acts like a piston, shoving the atmosphere outward at supersonic speeds.

This creates a "Wall of Air" known as Overpressure. Because the shockwave expands in all three dimensions (a sphere), the radius of destruction scales according to the Cube Root Law:

This means to double the damage radius, you need eight times the energy. The simulation visualizes this atmospheric displacement in two phases:

• Pressure: Measured in psi. The white rings show where the air pressure is strong enough to crush concrete (20 psi) or collapse residential homes (5 psi).
• Atmosphere: Behind the shock front, the displaced air rushes outward to fill the void, creating hurricane-force winds (>500 km/h).

*Scaling constants (K_p) are derived from standard atmospheric airburst curves [Glasstone & Dolan, 1977].

• Spherical Symmetry / Point-Source:
  The energy release is modeled as originating from a single mathematical point, expanding over a flat plane.
• Standard Atmosphere:
  Gamma radiation shielding is calculated based on a uniform standard atmosphere (sea level density). It accounts for air attenuation but does not simulate variable weather or altitude density.

• Video Writers: Lily Shepherd, Casper Mebius & Derek Muller
• Producer & Director: Lily Shepherd
• Simulation Image Illustrator: Jakub Misiek
• Total Annihilator Developer & Researcher: Sophia Rose