Question

I really liked the videos where they used the fire to show the sound waves. How exactly is that done? Do different valves get turned on and off or does the sound coming in change the way the flame is dispursed?

Answer 1

Chladni plates are metal plates sprinkled with fine powder that form intricate patterns when a sound wave is played through them. The patterns depend on the frequency of the sound wave.

Step-by-step explanation:

The videos you mentioned that use fire to show sound waves are likely demonstrating the concept of Chladni plates. Chladni plates are metal plates that are sprinkled with a fine powder, like sand or salt. When a sound wave is played through the plate, it causes the powder to move and form intricate patterns.

The pattern formed on the plate depends on the frequency of the sound wave. Higher frequencies create more intricate patterns with smaller, denser areas of powder, while lower frequencies create simpler, larger patterns with fewer areas of powder.

So, it is not the flame itself that is affected by the sound waves, but rather the movement of the powder on the plate that creates the visible patterns.