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Laboratory experiments that demonstrate the effect of thunder within controlled conditions at the Lightning Testing and consultancy in Oxfordshire. There are four stages to the demonstration. The first is a test firing of the experiment, where there volume of the thunder can be heard.

Next, a series of candles and slow motion cameras are used to show how thunder鈥檚 shock wave travels, extinguishing the candles. An explanation of how temperature differences cause thunder is given outside using a lens and wood. A typical bolt of lightning will reach 20,000 degrees Celsius. Because of this heat, the air around it is exploded / expanded into a shockwave.

A third iteration of the demonstration sees thunder breaking lightbulbs, and slow motion allows viewers to distinguish between the shock wave (thunder) and the lighting.

The final demonstration allows the shockwave itself to be seen.